/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 12:34:26,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 12:34:26,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 12:34:26,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 12:34:26,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 12:34:26,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 12:34:26,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 12:34:26,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 12:34:26,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 12:34:26,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 12:34:26,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 12:34:26,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 12:34:26,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 12:34:26,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 12:34:26,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 12:34:26,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 12:34:26,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 12:34:26,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 12:34:26,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 12:34:26,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 12:34:26,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 12:34:26,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 12:34:26,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 12:34:26,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 12:34:26,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 12:34:26,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 12:34:26,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 12:34:26,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 12:34:26,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 12:34:26,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 12:34:26,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 12:34:26,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 12:34:26,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 12:34:26,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 12:34:26,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 12:34:26,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 12:34:26,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 12:34:26,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 12:34:26,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 12:34:26,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 12:34:26,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 12:34:26,522 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-RepeatedSemanticLbe.epf [2021-03-25 12:34:26,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 12:34:26,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 12:34:26,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 12:34:26,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 12:34:26,563 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 12:34:26,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 12:34:26,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 12:34:26,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 12:34:26,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 12:34:26,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 12:34:26,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 12:34:26,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 12:34:26,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 12:34:26,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 12:34:26,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 12:34:26,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 12:34:26,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 12:34:26,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 12:34:26,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 12:34:26,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 12:34:26,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 12:34:26,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 12:34:26,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 12:34:26,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 12:34:26,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 12:34:26,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 12:34:26,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 12:34:26,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 12:34:26,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 12:34:26,568 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 12:34:26,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 12:34:26,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 12:34:26,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 12:34:26,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 12:34:26,901 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 12:34:26,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2021-03-25 12:34:26,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7c81067/ae9443d2f5f847bf9efa57350f67119a/FLAG072121e05 [2021-03-25 12:34:27,512 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 12:34:27,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2021-03-25 12:34:27,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7c81067/ae9443d2f5f847bf9efa57350f67119a/FLAG072121e05 [2021-03-25 12:34:27,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba7c81067/ae9443d2f5f847bf9efa57350f67119a [2021-03-25 12:34:27,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 12:34:27,964 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 12:34:27,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 12:34:27,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 12:34:27,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 12:34:27,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 12:34:27" (1/1) ... [2021-03-25 12:34:27,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5c9219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:27, skipping insertion in model container [2021-03-25 12:34:27,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 12:34:27" (1/1) ... [2021-03-25 12:34:27,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 12:34:28,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 12:34:28,328 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/fib_bench_longest-1.i[30286,30299] [2021-03-25 12:34:28,344 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/fib_bench_longest-1.i[31038,31051] [2021-03-25 12:34:28,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 12:34:28,352 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 12:34:28,387 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/fib_bench_longest-1.i[30286,30299] [2021-03-25 12:34:28,391 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/fib_bench_longest-1.i[31038,31051] [2021-03-25 12:34:28,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 12:34:28,449 INFO L208 MainTranslator]: Completed translation [2021-03-25 12:34:28,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28 WrapperNode [2021-03-25 12:34:28,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 12:34:28,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 12:34:28,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 12:34:28,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 12:34:28,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 12:34:28,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 12:34:28,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 12:34:28,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 12:34:28,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (1/1) ... [2021-03-25 12:34:28,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 12:34:28,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 12:34:28,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 12:34:28,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 12:34:28,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (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 [2021-03-25 12:34:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-03-25 12:34:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-03-25 12:34:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-03-25 12:34:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-03-25 12:34:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 12:34:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 12:34:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 12:34:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 12:34:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 12:34:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 12:34:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 12:34:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 12:34:28,595 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 12:34:29,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 12:34:29,005 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-25 12:34:29,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:34:29 BoogieIcfgContainer [2021-03-25 12:34:29,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 12:34:29,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 12:34:29,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 12:34:29,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 12:34:29,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 12:34:27" (1/3) ... [2021-03-25 12:34:29,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4200c49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:34:29, skipping insertion in model container [2021-03-25 12:34:29,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:34:28" (2/3) ... [2021-03-25 12:34:29,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4200c49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:34:29, skipping insertion in model container [2021-03-25 12:34:29,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:34:29" (3/3) ... [2021-03-25 12:34:29,012 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-1.i [2021-03-25 12:34:29,024 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 12:34:29,027 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 12:34:29,028 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 12:34:29,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,058 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,059 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,059 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,059 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,059 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,059 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,060 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,060 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,060 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,060 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,062 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,063 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,063 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,064 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,064 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,065 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,065 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,066 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,066 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,070 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,070 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,071 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,071 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,075 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,075 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,075 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:34:29,084 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 12:34:29,100 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 12:34:29,126 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 12:34:29,127 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 12:34:29,127 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 12:34:29,127 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 12:34:29,127 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 12:34:29,127 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 12:34:29,127 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 12:34:29,127 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 12:34:29,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 134 flow [2021-03-25 12:34:29,181 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-25 12:34:29,182 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 12:34:29,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 60 events. 5/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 12:34:29,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 134 flow [2021-03-25 12:34:29,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 126 flow [2021-03-25 12:34:29,192 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:29,202 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-25 12:34:29,205 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-25 12:34:29,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 126 flow [2021-03-25 12:34:29,244 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-25 12:34:29,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 12:34:29,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 60 events. 5/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 12:34:29,247 INFO L142 LiptonReduction]: Number of co-enabled transitions 1080 [2021-03-25 12:34:30,729 INFO L154 LiptonReduction]: Checked pairs total: 529 [2021-03-25 12:34:30,730 INFO L156 LiptonReduction]: Total number of compositions: 36 [2021-03-25 12:34:30,740 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1549 [2021-03-25 12:34:30,757 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 12:34:30,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 12:34:30,758 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:30,759 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:30,759 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash 616202235, now seen corresponding path program 1 times [2021-03-25 12:34:30,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:30,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181922300] [2021-03-25 12:34:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:30,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:30,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:30,981 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 12:34:30,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:30,992 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-25 12:34:30,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:31,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181922300] [2021-03-25 12:34:31,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:31,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 12:34:31,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408593985] [2021-03-25 12:34:31,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 12:34:31,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:31,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 12:34:31,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 12:34:31,027 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2021-03-25 12:34:31,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:31,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:31,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2021-03-25 12:34:31,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:31,107 INFO L129 PetriNetUnfolder]: 40/129 cut-off events. [2021-03-25 12:34:31,107 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 12:34:31,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 129 events. 40/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 498 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 188. Up to 51 conditions per place. [2021-03-25 12:34:31,111 INFO L132 encePairwiseOnDemand]: 93/98 looper letters, 5 selfloop transitions, 7 changer transitions 8/37 dead transitions. [2021-03-25 12:34:31,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 116 flow [2021-03-25 12:34:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 12:34:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 12:34:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2021-03-25 12:34:31,129 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-03-25 12:34:31,129 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2021-03-25 12:34:31,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2021-03-25 12:34:31,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:31,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2021-03-25 12:34:31,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:31,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:31,148 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:31,150 INFO L185 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 5 states and 385 transitions. [2021-03-25 12:34:31,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 116 flow [2021-03-25 12:34:31,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 12:34:31,153 INFO L241 Difference]: Finished difference. Result has 36 places, 28 transitions, 95 flow [2021-03-25 12:34:31,154 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2021-03-25 12:34:31,155 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 12:34:31,155 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:31,155 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 28 transitions, 95 flow [2021-03-25 12:34:31,156 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 28 transitions, 95 flow [2021-03-25 12:34:31,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 95 flow [2021-03-25 12:34:31,168 INFO L129 PetriNetUnfolder]: 14/65 cut-off events. [2021-03-25 12:34:31,169 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-03-25 12:34:31,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 65 events. 14/65 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 106. Up to 16 conditions per place. [2021-03-25 12:34:31,171 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-25 12:34:31,391 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-25 12:34:31,674 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-25 12:34:32,027 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-25 12:34:32,314 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-25 12:34:32,317 INFO L154 LiptonReduction]: Checked pairs total: 83 [2021-03-25 12:34:32,317 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 12:34:32,318 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1163 [2021-03-25 12:34:32,319 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 83 flow [2021-03-25 12:34:32,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,319 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:32,319 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:32,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 12:34:32,320 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:32,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:32,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1147891409, now seen corresponding path program 1 times [2021-03-25 12:34:32,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:32,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87389428] [2021-03-25 12:34:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:32,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:32,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:32,405 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:32,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:32,416 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 12:34:32,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:32,434 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-25 12:34:32,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:32,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87389428] [2021-03-25 12:34:32,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:32,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:32,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359537217] [2021-03-25 12:34:32,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 12:34:32,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:32,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 12:34:32,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 12:34:32,448 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 106 [2021-03-25 12:34:32,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:32,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 106 [2021-03-25 12:34:32,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:32,516 INFO L129 PetriNetUnfolder]: 38/104 cut-off events. [2021-03-25 12:34:32,516 INFO L130 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2021-03-25 12:34:32,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 104 events. 38/104 cut-off events. For 87/93 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 378 event pairs, 2 based on Foata normal form. 8/95 useless extension candidates. Maximal degree in co-relation 262. Up to 54 conditions per place. [2021-03-25 12:34:32,517 INFO L132 encePairwiseOnDemand]: 99/106 looper letters, 5 selfloop transitions, 14 changer transitions 0/30 dead transitions. [2021-03-25 12:34:32,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 160 flow [2021-03-25 12:34:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 560 transitions. [2021-03-25 12:34:32,520 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2021-03-25 12:34:32,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 560 transitions. [2021-03-25 12:34:32,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 560 transitions. [2021-03-25 12:34:32,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:32,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 560 transitions. [2021-03-25 12:34:32,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,526 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,526 INFO L185 Difference]: Start difference. First operand has 26 places, 22 transitions, 83 flow. Second operand 7 states and 560 transitions. [2021-03-25 12:34:32,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 160 flow [2021-03-25 12:34:32,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 12:34:32,529 INFO L241 Difference]: Finished difference. Result has 35 places, 29 transitions, 168 flow [2021-03-25 12:34:32,529 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2021-03-25 12:34:32,529 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-25 12:34:32,529 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:32,530 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-25 12:34:32,530 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-25 12:34:32,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 168 flow [2021-03-25 12:34:32,549 INFO L129 PetriNetUnfolder]: 26/89 cut-off events. [2021-03-25 12:34:32,550 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2021-03-25 12:34:32,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 89 events. 26/89 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 337 event pairs, 1 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 250. Up to 29 conditions per place. [2021-03-25 12:34:32,552 INFO L142 LiptonReduction]: Number of co-enabled transitions 204 [2021-03-25 12:34:32,627 INFO L154 LiptonReduction]: Checked pairs total: 75 [2021-03-25 12:34:32,627 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:34:32,627 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 98 [2021-03-25 12:34:32,628 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 168 flow [2021-03-25 12:34:32,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,628 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:32,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:32,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 12:34:32,629 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:32,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:32,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1327699939, now seen corresponding path program 1 times [2021-03-25 12:34:32,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:32,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255125595] [2021-03-25 12:34:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:32,682 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:32,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:32,690 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:34:32,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:32,702 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:32,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:32,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255125595] [2021-03-25 12:34:32,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:32,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 12:34:32,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911398168] [2021-03-25 12:34:32,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 12:34:32,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:32,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 12:34:32,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 12:34:32,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 111 [2021-03-25 12:34:32,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:32,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 111 [2021-03-25 12:34:32,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:32,762 INFO L129 PetriNetUnfolder]: 42/113 cut-off events. [2021-03-25 12:34:32,762 INFO L130 PetriNetUnfolder]: For 297/303 co-relation queries the response was YES. [2021-03-25 12:34:32,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 113 events. 42/113 cut-off events. For 297/303 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 447 event pairs, 4 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 396. Up to 62 conditions per place. [2021-03-25 12:34:32,764 INFO L132 encePairwiseOnDemand]: 101/111 looper letters, 12 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2021-03-25 12:34:32,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 236 flow [2021-03-25 12:34:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 12:34:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 12:34:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2021-03-25 12:34:32,765 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7207207207207207 [2021-03-25 12:34:32,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2021-03-25 12:34:32,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2021-03-25 12:34:32,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:32,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2021-03-25 12:34:32,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,769 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,769 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 168 flow. Second operand 5 states and 400 transitions. [2021-03-25 12:34:32,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 236 flow [2021-03-25 12:34:32,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 209 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-25 12:34:32,772 INFO L241 Difference]: Finished difference. Result has 38 places, 30 transitions, 178 flow [2021-03-25 12:34:32,772 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2021-03-25 12:34:32,772 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-25 12:34:32,772 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:32,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-25 12:34:32,773 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-25 12:34:32,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 178 flow [2021-03-25 12:34:32,781 INFO L129 PetriNetUnfolder]: 32/105 cut-off events. [2021-03-25 12:34:32,781 INFO L130 PetriNetUnfolder]: For 184/185 co-relation queries the response was YES. [2021-03-25 12:34:32,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 105 events. 32/105 cut-off events. For 184/185 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 423 event pairs, 2 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 298. Up to 30 conditions per place. [2021-03-25 12:34:32,783 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-25 12:34:32,875 INFO L154 LiptonReduction]: Checked pairs total: 59 [2021-03-25 12:34:32,876 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:34:32,876 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 104 [2021-03-25 12:34:32,877 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 176 flow [2021-03-25 12:34:32,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,877 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:32,877 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:32,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 12:34:32,877 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1427106436, now seen corresponding path program 1 times [2021-03-25 12:34:32,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:32,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79830276] [2021-03-25 12:34:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:32,923 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:32,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:32,929 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-03-25 12:34:32,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:32,943 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:32,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:32,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79830276] [2021-03-25 12:34:32,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:32,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 12:34:32,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808049182] [2021-03-25 12:34:32,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 12:34:32,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:32,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 12:34:32,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 12:34:32,953 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 116 [2021-03-25 12:34:32,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:32,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:32,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 116 [2021-03-25 12:34:32,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:33,027 INFO L129 PetriNetUnfolder]: 35/98 cut-off events. [2021-03-25 12:34:33,027 INFO L130 PetriNetUnfolder]: For 259/265 co-relation queries the response was YES. [2021-03-25 12:34:33,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 98 events. 35/98 cut-off events. For 259/265 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 363 event pairs, 0 based on Foata normal form. 8/90 useless extension candidates. Maximal degree in co-relation 340. Up to 47 conditions per place. [2021-03-25 12:34:33,029 INFO L132 encePairwiseOnDemand]: 105/116 looper letters, 12 selfloop transitions, 16 changer transitions 0/38 dead transitions. [2021-03-25 12:34:33,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 299 flow [2021-03-25 12:34:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 561 transitions. [2021-03-25 12:34:33,031 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6908866995073891 [2021-03-25 12:34:33,031 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 561 transitions. [2021-03-25 12:34:33,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 561 transitions. [2021-03-25 12:34:33,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:33,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 561 transitions. [2021-03-25 12:34:33,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.14285714285714) internal successors, (561), 7 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:33,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 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) [2021-03-25 12:34:33,035 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 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) [2021-03-25 12:34:33,035 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 176 flow. Second operand 7 states and 561 transitions. [2021-03-25 12:34:33,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 299 flow [2021-03-25 12:34:33,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 280 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:33,038 INFO L241 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2021-03-25 12:34:33,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2021-03-25 12:34:33,038 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2021-03-25 12:34:33,039 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:33,039 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-25 12:34:33,039 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-25 12:34:33,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 267 flow [2021-03-25 12:34:33,047 INFO L129 PetriNetUnfolder]: 34/97 cut-off events. [2021-03-25 12:34:33,047 INFO L130 PetriNetUnfolder]: For 346/347 co-relation queries the response was YES. [2021-03-25 12:34:33,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 97 events. 34/97 cut-off events. For 346/347 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 376 event pairs, 0 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 347. Up to 28 conditions per place. [2021-03-25 12:34:33,049 INFO L142 LiptonReduction]: Number of co-enabled transitions 230 [2021-03-25 12:34:33,194 INFO L154 LiptonReduction]: Checked pairs total: 69 [2021-03-25 12:34:33,194 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:34:33,194 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 155 [2021-03-25 12:34:33,196 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 267 flow [2021-03-25 12:34:33,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:33,196 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:33,196 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:33,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 12:34:33,196 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:33,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1285636230, now seen corresponding path program 1 times [2021-03-25 12:34:33,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:33,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094429735] [2021-03-25 12:34:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:33,242 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:33,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,253 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-03-25 12:34:33,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,261 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 12:34:33,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:33,274 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-25 12:34:33,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:33,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094429735] [2021-03-25 12:34:33,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696209425] [2021-03-25 12:34:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:33,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:33,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:33,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:33,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:33,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:33,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:33,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:33,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:33,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:33,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:33,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:33,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:33,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:33,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:33,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:33,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:33,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:33,539 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 12:34:33,542 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 12:34:33,548 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:33,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:33,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:33,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:33,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:33,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:33,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:34:33,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196810161] [2021-03-25 12:34:33,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:34:33,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:33,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:34:33,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:34:33,577 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 121 [2021-03-25 12:34:33,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 267 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:33,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:33,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 121 [2021-03-25 12:34:33,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:33,743 INFO L129 PetriNetUnfolder]: 46/133 cut-off events. [2021-03-25 12:34:33,743 INFO L130 PetriNetUnfolder]: For 682/690 co-relation queries the response was YES. [2021-03-25 12:34:33,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 133 events. 46/133 cut-off events. For 682/690 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 529 event pairs, 0 based on Foata normal form. 9/118 useless extension candidates. Maximal degree in co-relation 556. Up to 59 conditions per place. [2021-03-25 12:34:33,745 INFO L132 encePairwiseOnDemand]: 108/121 looper letters, 13 selfloop transitions, 29 changer transitions 0/52 dead transitions. [2021-03-25 12:34:33,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 515 flow [2021-03-25 12:34:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 12:34:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 12:34:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 887 transitions. [2021-03-25 12:34:33,748 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6664162283996995 [2021-03-25 12:34:33,748 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 887 transitions. [2021-03-25 12:34:33,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 887 transitions. [2021-03-25 12:34:33,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:33,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 887 transitions. [2021-03-25 12:34:33,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 80.63636363636364) internal successors, (887), 11 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:33,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 121.0) internal successors, (1452), 12 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:33,754 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 121.0) internal successors, (1452), 12 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:33,754 INFO L185 Difference]: Start difference. First operand has 42 places, 36 transitions, 267 flow. Second operand 11 states and 887 transitions. [2021-03-25 12:34:33,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 515 flow [2021-03-25 12:34:33,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 480 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-25 12:34:33,759 INFO L241 Difference]: Finished difference. Result has 53 places, 52 transitions, 484 flow [2021-03-25 12:34:33,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=484, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2021-03-25 12:34:33,760 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-25 12:34:33,760 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:33,760 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 52 transitions, 484 flow [2021-03-25 12:34:33,760 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 52 transitions, 484 flow [2021-03-25 12:34:33,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 52 transitions, 484 flow [2021-03-25 12:34:33,772 INFO L129 PetriNetUnfolder]: 46/133 cut-off events. [2021-03-25 12:34:33,772 INFO L130 PetriNetUnfolder]: For 773/773 co-relation queries the response was YES. [2021-03-25 12:34:33,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 133 events. 46/133 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 532 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 551. Up to 46 conditions per place. [2021-03-25 12:34:33,775 INFO L142 LiptonReduction]: Number of co-enabled transitions 316 [2021-03-25 12:34:34,008 INFO L154 LiptonReduction]: Checked pairs total: 214 [2021-03-25 12:34:34,008 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 12:34:34,008 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 248 [2021-03-25 12:34:34,010 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 477 flow [2021-03-25 12:34:34,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:34,011 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:34,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:34,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:34,234 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:34,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1327631584, now seen corresponding path program 1 times [2021-03-25 12:34:34,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:34,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376207533] [2021-03-25 12:34:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:34,271 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:34,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,279 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:34:34,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:34,304 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-03-25 12:34:34,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:34:34,315 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:34,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:34,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376207533] [2021-03-25 12:34:34,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921865863] [2021-03-25 12:34:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:34,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:34,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:34,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:34,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:34,426 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:34:34,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:34,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:34,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:34,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:34,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:34,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:34,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:34,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:34,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:34,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:34,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:34,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:34,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:34:34,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:34:34,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:34,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:34,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:34,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:34,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:34,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:34,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:34,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:34,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:34,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-25 12:34:34,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665102669] [2021-03-25 12:34:34,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 12:34:34,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:34,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 12:34:34,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-25 12:34:34,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 130 [2021-03-25 12:34:34,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:34,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:34,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 130 [2021-03-25 12:34:34,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:34,593 INFO L129 PetriNetUnfolder]: 47/140 cut-off events. [2021-03-25 12:34:34,593 INFO L130 PetriNetUnfolder]: For 1034/1049 co-relation queries the response was YES. [2021-03-25 12:34:34,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 140 events. 47/140 cut-off events. For 1034/1049 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 596 event pairs, 0 based on Foata normal form. 10/123 useless extension candidates. Maximal degree in co-relation 659. Up to 69 conditions per place. [2021-03-25 12:34:34,595 INFO L132 encePairwiseOnDemand]: 116/130 looper letters, 33 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2021-03-25 12:34:34,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 666 flow [2021-03-25 12:34:34,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 12:34:34,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 12:34:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2021-03-25 12:34:34,597 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2021-03-25 12:34:34,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2021-03-25 12:34:34,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2021-03-25 12:34:34,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:34,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2021-03-25 12:34:34,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:34,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:34,601 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:34,601 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 477 flow. Second operand 6 states and 492 transitions. [2021-03-25 12:34:34,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 666 flow [2021-03-25 12:34:34,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 513 flow, removed 64 selfloop flow, removed 6 redundant places. [2021-03-25 12:34:34,606 INFO L241 Difference]: Finished difference. Result has 54 places, 53 transitions, 429 flow [2021-03-25 12:34:34,606 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2021-03-25 12:34:34,606 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2021-03-25 12:34:34,606 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:34,607 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 53 transitions, 429 flow [2021-03-25 12:34:34,607 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 53 transitions, 429 flow [2021-03-25 12:34:34,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 429 flow [2021-03-25 12:34:34,617 INFO L129 PetriNetUnfolder]: 47/140 cut-off events. [2021-03-25 12:34:34,618 INFO L130 PetriNetUnfolder]: For 512/516 co-relation queries the response was YES. [2021-03-25 12:34:34,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 140 events. 47/140 cut-off events. For 512/516 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 608 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 492. Up to 50 conditions per place. [2021-03-25 12:34:34,620 INFO L142 LiptonReduction]: Number of co-enabled transitions 316 [2021-03-25 12:34:34,821 INFO L154 LiptonReduction]: Checked pairs total: 122 [2021-03-25 12:34:34,822 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 12:34:34,822 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 216 [2021-03-25 12:34:34,823 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 440 flow [2021-03-25 12:34:34,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:34,824 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:34,824 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:35,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:35,047 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1362032009, now seen corresponding path program 1 times [2021-03-25 12:34:35,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:35,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761618931] [2021-03-25 12:34:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:35,085 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:35,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,091 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:35,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:35,099 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:34:35,099 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:34:35,115 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:35,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:35,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761618931] [2021-03-25 12:34:35,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:35,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:35,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151420410] [2021-03-25 12:34:35,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:35,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:35,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:35,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:35,124 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 136 [2021-03-25 12:34:35,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:35,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:35,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 136 [2021-03-25 12:34:35,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:35,230 INFO L129 PetriNetUnfolder]: 50/145 cut-off events. [2021-03-25 12:34:35,230 INFO L130 PetriNetUnfolder]: For 702/728 co-relation queries the response was YES. [2021-03-25 12:34:35,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 145 events. 50/145 cut-off events. For 702/728 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 636 event pairs, 0 based on Foata normal form. 20/137 useless extension candidates. Maximal degree in co-relation 615. Up to 58 conditions per place. [2021-03-25 12:34:35,232 INFO L132 encePairwiseOnDemand]: 112/136 looper letters, 17 selfloop transitions, 29 changer transitions 0/56 dead transitions. [2021-03-25 12:34:35,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 562 flow [2021-03-25 12:34:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2021-03-25 12:34:35,235 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.601890756302521 [2021-03-25 12:34:35,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2021-03-25 12:34:35,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2021-03-25 12:34:35,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:35,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2021-03-25 12:34:35,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:35,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:35,240 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:35,240 INFO L185 Difference]: Start difference. First operand has 54 places, 53 transitions, 440 flow. Second operand 7 states and 573 transitions. [2021-03-25 12:34:35,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 562 flow [2021-03-25 12:34:35,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 535 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 12:34:35,247 INFO L241 Difference]: Finished difference. Result has 59 places, 55 transitions, 521 flow [2021-03-25 12:34:35,247 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=521, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2021-03-25 12:34:35,247 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-25 12:34:35,247 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:35,247 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 55 transitions, 521 flow [2021-03-25 12:34:35,248 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 55 transitions, 521 flow [2021-03-25 12:34:35,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 521 flow [2021-03-25 12:34:35,265 INFO L129 PetriNetUnfolder]: 50/145 cut-off events. [2021-03-25 12:34:35,265 INFO L130 PetriNetUnfolder]: For 697/705 co-relation queries the response was YES. [2021-03-25 12:34:35,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 145 events. 50/145 cut-off events. For 697/705 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 665 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 581. Up to 56 conditions per place. [2021-03-25 12:34:35,267 INFO L142 LiptonReduction]: Number of co-enabled transitions 326 [2021-03-25 12:34:35,321 INFO L154 LiptonReduction]: Checked pairs total: 32 [2021-03-25 12:34:35,321 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:34:35,322 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 75 [2021-03-25 12:34:35,323 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 521 flow [2021-03-25 12:34:35,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:35,324 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:35,324 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:35,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 12:34:35,324 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:35,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:35,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1327617789, now seen corresponding path program 1 times [2021-03-25 12:34:35,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:35,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942486375] [2021-03-25 12:34:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:35,378 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:35,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,384 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:34:35,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:35,394 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:34:35,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:35,403 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:35,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:35,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942486375] [2021-03-25 12:34:35,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800305101] [2021-03-25 12:34:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:35,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:35,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:35,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:35,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:35,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:35,518 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:34:35,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:35,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:35,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:35,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:35,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:35,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:35,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:35,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:35,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:35,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:35,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:35,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:35,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:35,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:35,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:35,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:35,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:35,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:35,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:35,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:35,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:35,571 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:34:35,571 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:34:35,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:35,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:35,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-25 12:34:35,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193569561] [2021-03-25 12:34:35,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 12:34:35,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:35,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 12:34:35,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-25 12:34:35,580 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 138 [2021-03-25 12:34:35,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 521 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:35,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:35,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 138 [2021-03-25 12:34:35,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:35,697 INFO L129 PetriNetUnfolder]: 47/142 cut-off events. [2021-03-25 12:34:35,698 INFO L130 PetriNetUnfolder]: For 759/776 co-relation queries the response was YES. [2021-03-25 12:34:35,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 142 events. 47/142 cut-off events. For 759/776 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 637 event pairs, 0 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 635. Up to 67 conditions per place. [2021-03-25 12:34:35,699 INFO L132 encePairwiseOnDemand]: 122/138 looper letters, 34 selfloop transitions, 19 changer transitions 0/63 dead transitions. [2021-03-25 12:34:35,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 710 flow [2021-03-25 12:34:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 12:34:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 12:34:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 499 transitions. [2021-03-25 12:34:35,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6026570048309179 [2021-03-25 12:34:35,702 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 499 transitions. [2021-03-25 12:34:35,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 499 transitions. [2021-03-25 12:34:35,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:35,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 499 transitions. [2021-03-25 12:34:35,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:35,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 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) [2021-03-25 12:34:35,705 INFO L81 ComplementDD]: Finished complementDD. Result has 7 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) [2021-03-25 12:34:35,705 INFO L185 Difference]: Start difference. First operand has 59 places, 55 transitions, 521 flow. Second operand 6 states and 499 transitions. [2021-03-25 12:34:35,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 710 flow [2021-03-25 12:34:35,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 650 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-25 12:34:35,711 INFO L241 Difference]: Finished difference. Result has 59 places, 58 transitions, 566 flow [2021-03-25 12:34:35,711 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=566, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2021-03-25 12:34:35,711 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-25 12:34:35,711 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:35,711 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 58 transitions, 566 flow [2021-03-25 12:34:35,711 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 58 transitions, 566 flow [2021-03-25 12:34:35,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 566 flow [2021-03-25 12:34:35,723 INFO L129 PetriNetUnfolder]: 47/142 cut-off events. [2021-03-25 12:34:35,723 INFO L130 PetriNetUnfolder]: For 736/745 co-relation queries the response was YES. [2021-03-25 12:34:35,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 142 events. 47/142 cut-off events. For 736/745 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 639 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 569. Up to 53 conditions per place. [2021-03-25 12:34:35,725 INFO L142 LiptonReduction]: Number of co-enabled transitions 328 [2021-03-25 12:34:35,776 INFO L154 LiptonReduction]: Checked pairs total: 62 [2021-03-25 12:34:35,776 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:34:35,776 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-03-25 12:34:35,777 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 566 flow [2021-03-25 12:34:35,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:35,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:35,777 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:35,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:35,998 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:35,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1289761240, now seen corresponding path program 1 times [2021-03-25 12:34:35,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:35,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663398322] [2021-03-25 12:34:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:36,032 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:36,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,037 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 12:34:36,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:36,044 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-03-25 12:34:36,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:34:36,052 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:36,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:36,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663398322] [2021-03-25 12:34:36,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870499602] [2021-03-25 12:34:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:36,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:36,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:36,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:36,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:36,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:36,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:36,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:36,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:36,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:36,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:36,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:36,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:36,177 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 12:34:36,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:34:36,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:34:36,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:36,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:36,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:36,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:36,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:36,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:36,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:36,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:36,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:36,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-25 12:34:36,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249221177] [2021-03-25 12:34:36,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 12:34:36,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 12:34:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 12:34:36,203 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 140 [2021-03-25 12:34:36,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 566 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:36,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 140 [2021-03-25 12:34:36,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:36,377 INFO L129 PetriNetUnfolder]: 49/150 cut-off events. [2021-03-25 12:34:36,377 INFO L130 PetriNetUnfolder]: For 892/916 co-relation queries the response was YES. [2021-03-25 12:34:36,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 150 events. 49/150 cut-off events. For 892/916 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 690 event pairs, 0 based on Foata normal form. 14/133 useless extension candidates. Maximal degree in co-relation 688. Up to 67 conditions per place. [2021-03-25 12:34:36,379 INFO L132 encePairwiseOnDemand]: 121/140 looper letters, 30 selfloop transitions, 24 changer transitions 0/64 dead transitions. [2021-03-25 12:34:36,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 730 flow [2021-03-25 12:34:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2021-03-25 12:34:36,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5908163265306122 [2021-03-25 12:34:36,381 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2021-03-25 12:34:36,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2021-03-25 12:34:36,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:36,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2021-03-25 12:34:36,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,385 INFO L185 Difference]: Start difference. First operand has 59 places, 58 transitions, 566 flow. Second operand 7 states and 579 transitions. [2021-03-25 12:34:36,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 730 flow [2021-03-25 12:34:36,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 696 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-25 12:34:36,390 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 614 flow [2021-03-25 12:34:36,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2021-03-25 12:34:36,391 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2021-03-25 12:34:36,391 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:36,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 59 transitions, 614 flow [2021-03-25 12:34:36,391 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 59 transitions, 614 flow [2021-03-25 12:34:36,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 614 flow [2021-03-25 12:34:36,403 INFO L129 PetriNetUnfolder]: 49/148 cut-off events. [2021-03-25 12:34:36,403 INFO L130 PetriNetUnfolder]: For 897/899 co-relation queries the response was YES. [2021-03-25 12:34:36,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 148 events. 49/148 cut-off events. For 897/899 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 685 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 628. Up to 55 conditions per place. [2021-03-25 12:34:36,405 INFO L142 LiptonReduction]: Number of co-enabled transitions 334 [2021-03-25 12:34:36,437 INFO L154 LiptonReduction]: Checked pairs total: 24 [2021-03-25 12:34:36,437 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:34:36,437 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-25 12:34:36,438 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 614 flow [2021-03-25 12:34:36,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,438 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:36,438 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:36,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:36,652 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1872617982, now seen corresponding path program 1 times [2021-03-25 12:34:36,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:36,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055689616] [2021-03-25 12:34:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:36,698 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:36,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,703 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 12:34:36,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:36,710 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:36,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,720 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:36,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:36,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055689616] [2021-03-25 12:34:36,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:36,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:36,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345972917] [2021-03-25 12:34:36,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:36,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:36,729 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2021-03-25 12:34:36,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:36,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2021-03-25 12:34:36,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:36,897 INFO L129 PetriNetUnfolder]: 55/172 cut-off events. [2021-03-25 12:34:36,897 INFO L130 PetriNetUnfolder]: For 1219/1231 co-relation queries the response was YES. [2021-03-25 12:34:36,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 172 events. 55/172 cut-off events. For 1219/1231 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 863 event pairs, 0 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 823. Up to 67 conditions per place. [2021-03-25 12:34:36,899 INFO L132 encePairwiseOnDemand]: 111/141 looper letters, 10 selfloop transitions, 48 changer transitions 0/68 dead transitions. [2021-03-25 12:34:36,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 860 flow [2021-03-25 12:34:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 741 transitions. [2021-03-25 12:34:36,902 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5839243498817966 [2021-03-25 12:34:36,902 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 741 transitions. [2021-03-25 12:34:36,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 741 transitions. [2021-03-25 12:34:36,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:36,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 741 transitions. [2021-03-25 12:34:36,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:36,907 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 614 flow. Second operand 9 states and 741 transitions. [2021-03-25 12:34:36,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 860 flow [2021-03-25 12:34:36,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 68 transitions, 815 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-03-25 12:34:36,912 INFO L241 Difference]: Finished difference. Result has 68 places, 67 transitions, 847 flow [2021-03-25 12:34:36,912 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=847, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2021-03-25 12:34:36,913 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2021-03-25 12:34:36,914 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:36,914 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 847 flow [2021-03-25 12:34:36,914 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 847 flow [2021-03-25 12:34:36,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 847 flow [2021-03-25 12:34:36,927 INFO L129 PetriNetUnfolder]: 55/172 cut-off events. [2021-03-25 12:34:36,927 INFO L130 PetriNetUnfolder]: For 1455/1467 co-relation queries the response was YES. [2021-03-25 12:34:36,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 172 events. 55/172 cut-off events. For 1455/1467 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 872 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 845. Up to 67 conditions per place. [2021-03-25 12:34:36,930 INFO L142 LiptonReduction]: Number of co-enabled transitions 372 [2021-03-25 12:34:37,052 INFO L154 LiptonReduction]: Checked pairs total: 130 [2021-03-25 12:34:37,052 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:34:37,052 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 138 [2021-03-25 12:34:37,053 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 845 flow [2021-03-25 12:34:37,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:37,054 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:37,054 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:37,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 12:34:37,054 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash -664119268, now seen corresponding path program 1 times [2021-03-25 12:34:37,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:37,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228068091] [2021-03-25 12:34:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:37,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:37,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,100 INFO L142 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-03-25 12:34:37,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,108 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 12:34:37,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:37,119 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-25 12:34:37,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:37,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228068091] [2021-03-25 12:34:37,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59189014] [2021-03-25 12:34:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:37,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:37,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:37,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:37,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:37,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:37,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:37,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:37,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:37,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:37,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:37,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:37,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:37,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:37,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:37,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:37,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:37,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:37,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:37,264 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 12:34:37,266 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 12:34:37,268 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:37,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:37,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:37,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:37,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:37,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:37,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:34:37,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830435348] [2021-03-25 12:34:37,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:34:37,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:37,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:34:37,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:34:37,291 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 146 [2021-03-25 12:34:37,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 845 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:37,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:37,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 146 [2021-03-25 12:34:37,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:37,496 INFO L129 PetriNetUnfolder]: 62/191 cut-off events. [2021-03-25 12:34:37,496 INFO L130 PetriNetUnfolder]: For 1932/1966 co-relation queries the response was YES. [2021-03-25 12:34:37,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 191 events. 62/191 cut-off events. For 1932/1966 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 967 event pairs, 0 based on Foata normal form. 15/167 useless extension candidates. Maximal degree in co-relation 1056. Up to 84 conditions per place. [2021-03-25 12:34:37,499 INFO L132 encePairwiseOnDemand]: 122/146 looper letters, 28 selfloop transitions, 44 changer transitions 0/81 dead transitions. [2021-03-25 12:34:37,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 1218 flow [2021-03-25 12:34:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 12:34:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 12:34:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 907 transitions. [2021-03-25 12:34:37,501 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5647571606475716 [2021-03-25 12:34:37,501 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 907 transitions. [2021-03-25 12:34:37,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 907 transitions. [2021-03-25 12:34:37,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:37,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 907 transitions. [2021-03-25 12:34:37,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.45454545454545) internal successors, (907), 11 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:37,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:37,506 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:37,507 INFO L185 Difference]: Start difference. First operand has 67 places, 66 transitions, 845 flow. Second operand 11 states and 907 transitions. [2021-03-25 12:34:37,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 1218 flow [2021-03-25 12:34:37,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 1165 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:37,514 INFO L241 Difference]: Finished difference. Result has 75 places, 81 transitions, 1153 flow [2021-03-25 12:34:37,514 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1153, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2021-03-25 12:34:37,516 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2021-03-25 12:34:37,516 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:37,516 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 81 transitions, 1153 flow [2021-03-25 12:34:37,516 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 81 transitions, 1153 flow [2021-03-25 12:34:37,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 81 transitions, 1153 flow [2021-03-25 12:34:37,535 INFO L129 PetriNetUnfolder]: 62/187 cut-off events. [2021-03-25 12:34:37,535 INFO L130 PetriNetUnfolder]: For 1888/1904 co-relation queries the response was YES. [2021-03-25 12:34:37,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 187 events. 62/187 cut-off events. For 1888/1904 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 929 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 1024. Up to 78 conditions per place. [2021-03-25 12:34:37,537 INFO L142 LiptonReduction]: Number of co-enabled transitions 458 [2021-03-25 12:34:37,752 INFO L154 LiptonReduction]: Checked pairs total: 289 [2021-03-25 12:34:37,752 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 12:34:37,753 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 237 [2021-03-25 12:34:37,753 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 1156 flow [2021-03-25 12:34:37,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:37,754 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:37,754 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:37,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-03-25 12:34:37,976 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1500324590, now seen corresponding path program 1 times [2021-03-25 12:34:37,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:37,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525940114] [2021-03-25 12:34:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:38,001 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:38,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,006 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:38,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,013 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:38,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,020 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:38,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:38,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525940114] [2021-03-25 12:34:38,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:38,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:38,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120660109] [2021-03-25 12:34:38,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:38,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:38,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:38,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:38,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2021-03-25 12:34:38,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 1156 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:38,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2021-03-25 12:34:38,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:38,198 INFO L129 PetriNetUnfolder]: 69/214 cut-off events. [2021-03-25 12:34:38,199 INFO L130 PetriNetUnfolder]: For 2639/2710 co-relation queries the response was YES. [2021-03-25 12:34:38,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 214 events. 69/214 cut-off events. For 2639/2710 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1171 event pairs, 0 based on Foata normal form. 27/196 useless extension candidates. Maximal degree in co-relation 1294. Up to 91 conditions per place. [2021-03-25 12:34:38,201 INFO L132 encePairwiseOnDemand]: 114/154 looper letters, 19 selfloop transitions, 65 changer transitions 0/93 dead transitions. [2021-03-25 12:34:38,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 93 transitions, 1564 flow [2021-03-25 12:34:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 754 transitions. [2021-03-25 12:34:38,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5440115440115441 [2021-03-25 12:34:38,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 754 transitions. [2021-03-25 12:34:38,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 754 transitions. [2021-03-25 12:34:38,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:38,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 754 transitions. [2021-03-25 12:34:38,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,209 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,209 INFO L185 Difference]: Start difference. First operand has 75 places, 81 transitions, 1156 flow. Second operand 9 states and 754 transitions. [2021-03-25 12:34:38,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 93 transitions, 1564 flow [2021-03-25 12:34:38,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 1347 flow, removed 91 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:38,226 INFO L241 Difference]: Finished difference. Result has 81 places, 90 transitions, 1366 flow [2021-03-25 12:34:38,226 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1366, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2021-03-25 12:34:38,226 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2021-03-25 12:34:38,226 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:38,226 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 90 transitions, 1366 flow [2021-03-25 12:34:38,226 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 90 transitions, 1366 flow [2021-03-25 12:34:38,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 90 transitions, 1366 flow [2021-03-25 12:34:38,243 INFO L129 PetriNetUnfolder]: 69/212 cut-off events. [2021-03-25 12:34:38,244 INFO L130 PetriNetUnfolder]: For 2236/2266 co-relation queries the response was YES. [2021-03-25 12:34:38,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 212 events. 69/212 cut-off events. For 2236/2266 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1158 event pairs, 0 based on Foata normal form. 1/168 useless extension candidates. Maximal degree in co-relation 1180. Up to 85 conditions per place. [2021-03-25 12:34:38,246 INFO L142 LiptonReduction]: Number of co-enabled transitions 498 [2021-03-25 12:34:38,446 INFO L154 LiptonReduction]: Checked pairs total: 299 [2021-03-25 12:34:38,446 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 12:34:38,446 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 220 [2021-03-25 12:34:38,448 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 1372 flow [2021-03-25 12:34:38,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,448 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:38,448 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:38,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 12:34:38,448 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:38,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:38,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1361316250, now seen corresponding path program 1 times [2021-03-25 12:34:38,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:38,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843383156] [2021-03-25 12:34:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:38,476 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:38,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,482 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:38,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,488 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:34:38,489 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:34:38,509 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:38,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:38,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843383156] [2021-03-25 12:34:38,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:38,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:38,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464830149] [2021-03-25 12:34:38,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:38,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:38,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:38,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:38,518 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 161 [2021-03-25 12:34:38,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 1372 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:38,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 161 [2021-03-25 12:34:38,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:38,658 INFO L129 PetriNetUnfolder]: 70/216 cut-off events. [2021-03-25 12:34:38,658 INFO L130 PetriNetUnfolder]: For 2375/2465 co-relation queries the response was YES. [2021-03-25 12:34:38,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 216 events. 70/216 cut-off events. For 2375/2465 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1192 event pairs, 0 based on Foata normal form. 29/200 useless extension candidates. Maximal degree in co-relation 1332. Up to 88 conditions per place. [2021-03-25 12:34:38,661 INFO L132 encePairwiseOnDemand]: 128/161 looper letters, 43 selfloop transitions, 44 changer transitions 0/96 dead transitions. [2021-03-25 12:34:38,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 1636 flow [2021-03-25 12:34:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2021-03-25 12:34:38,663 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5288376220053239 [2021-03-25 12:34:38,663 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2021-03-25 12:34:38,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2021-03-25 12:34:38,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:38,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2021-03-25 12:34:38,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,666 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,666 INFO L185 Difference]: Start difference. First operand has 81 places, 90 transitions, 1372 flow. Second operand 7 states and 596 transitions. [2021-03-25 12:34:38,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 1636 flow [2021-03-25 12:34:38,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 1552 flow, removed 23 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:38,678 INFO L241 Difference]: Finished difference. Result has 83 places, 91 transitions, 1438 flow [2021-03-25 12:34:38,679 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1438, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2021-03-25 12:34:38,679 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2021-03-25 12:34:38,679 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:38,679 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 91 transitions, 1438 flow [2021-03-25 12:34:38,679 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 91 transitions, 1438 flow [2021-03-25 12:34:38,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 91 transitions, 1438 flow [2021-03-25 12:34:38,696 INFO L129 PetriNetUnfolder]: 70/216 cut-off events. [2021-03-25 12:34:38,697 INFO L130 PetriNetUnfolder]: For 2411/2456 co-relation queries the response was YES. [2021-03-25 12:34:38,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 216 events. 70/216 cut-off events. For 2411/2456 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1176 event pairs, 0 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 1243. Up to 82 conditions per place. [2021-03-25 12:34:38,699 INFO L142 LiptonReduction]: Number of co-enabled transitions 502 [2021-03-25 12:34:38,728 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-25 12:34:38,728 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:34:38,728 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-03-25 12:34:38,728 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 1438 flow [2021-03-25 12:34:38,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,729 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:38,729 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:38,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 12:34:38,729 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:38,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:38,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1183385077, now seen corresponding path program 1 times [2021-03-25 12:34:38,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:38,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951791656] [2021-03-25 12:34:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:38,767 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:38,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,772 INFO L142 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-03-25 12:34:38,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,778 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 12:34:38,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:38,790 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-25 12:34:38,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:38,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951791656] [2021-03-25 12:34:38,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815319711] [2021-03-25 12:34:38,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:38,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:38,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:38,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:38,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:38,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:38,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:38,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:38,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:38,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:38,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:38,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:38,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:38,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:38,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:38,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:38,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:38,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:38,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:38,920 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 12:34:38,921 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 12:34:38,921 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:38,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:38,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:38,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:38,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:38,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:38,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:34:38,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974911787] [2021-03-25 12:34:38,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:34:38,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:38,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:34:38,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:34:38,941 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 162 [2021-03-25 12:34:38,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 1438 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:38,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:38,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 162 [2021-03-25 12:34:38,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:39,207 INFO L129 PetriNetUnfolder]: 80/248 cut-off events. [2021-03-25 12:34:39,208 INFO L130 PetriNetUnfolder]: For 3246/3342 co-relation queries the response was YES. [2021-03-25 12:34:39,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 248 events. 80/248 cut-off events. For 3246/3342 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1386 event pairs, 0 based on Foata normal form. 22/218 useless extension candidates. Maximal degree in co-relation 1570. Up to 105 conditions per place. [2021-03-25 12:34:39,210 INFO L132 encePairwiseOnDemand]: 129/162 looper letters, 37 selfloop transitions, 63 changer transitions 0/109 dead transitions. [2021-03-25 12:34:39,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 109 transitions, 1977 flow [2021-03-25 12:34:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 12:34:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 12:34:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 925 transitions. [2021-03-25 12:34:39,215 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5190796857463524 [2021-03-25 12:34:39,215 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 925 transitions. [2021-03-25 12:34:39,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 925 transitions. [2021-03-25 12:34:39,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:39,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 925 transitions. [2021-03-25 12:34:39,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.0909090909091) internal successors, (925), 11 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:39,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 162.0) internal successors, (1944), 12 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:39,221 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 162.0) internal successors, (1944), 12 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:39,222 INFO L185 Difference]: Start difference. First operand has 83 places, 91 transitions, 1438 flow. Second operand 11 states and 925 transitions. [2021-03-25 12:34:39,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 109 transitions, 1977 flow [2021-03-25 12:34:39,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 109 transitions, 1925 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:39,236 INFO L241 Difference]: Finished difference. Result has 92 places, 109 transitions, 1909 flow [2021-03-25 12:34:39,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1909, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2021-03-25 12:34:39,236 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2021-03-25 12:34:39,236 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:39,237 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 109 transitions, 1909 flow [2021-03-25 12:34:39,237 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 109 transitions, 1909 flow [2021-03-25 12:34:39,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 109 transitions, 1909 flow [2021-03-25 12:34:39,257 INFO L129 PetriNetUnfolder]: 80/244 cut-off events. [2021-03-25 12:34:39,258 INFO L130 PetriNetUnfolder]: For 3263/3318 co-relation queries the response was YES. [2021-03-25 12:34:39,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 244 events. 80/244 cut-off events. For 3263/3318 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1361 event pairs, 0 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 1533. Up to 100 conditions per place. [2021-03-25 12:34:39,261 INFO L142 LiptonReduction]: Number of co-enabled transitions 610 [2021-03-25 12:34:39,503 INFO L154 LiptonReduction]: Checked pairs total: 460 [2021-03-25 12:34:39,503 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 12:34:39,504 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 268 [2021-03-25 12:34:39,504 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 1915 flow [2021-03-25 12:34:39,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:39,504 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:39,504 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:39,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:39,720 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:39,720 INFO L82 PathProgramCache]: Analyzing trace with hash -732194695, now seen corresponding path program 1 times [2021-03-25 12:34:39,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:39,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230201291] [2021-03-25 12:34:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:39,776 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:39,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:39,781 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:39,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:39,788 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:39,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:39,795 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:39,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:39,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230201291] [2021-03-25 12:34:39,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:39,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:39,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268404520] [2021-03-25 12:34:39,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:39,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:39,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:39,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 171 [2021-03-25 12:34:39,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 1915 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:39,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:39,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 171 [2021-03-25 12:34:39,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:40,049 INFO L129 PetriNetUnfolder]: 87/271 cut-off events. [2021-03-25 12:34:40,050 INFO L130 PetriNetUnfolder]: For 4323/4542 co-relation queries the response was YES. [2021-03-25 12:34:40,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 271 events. 87/271 cut-off events. For 4323/4542 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1630 event pairs, 0 based on Foata normal form. 37/250 useless extension candidates. Maximal degree in co-relation 1860. Up to 114 conditions per place. [2021-03-25 12:34:40,053 INFO L132 encePairwiseOnDemand]: 116/171 looper letters, 22 selfloop transitions, 90 changer transitions 0/121 dead transitions. [2021-03-25 12:34:40,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 2421 flow [2021-03-25 12:34:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 770 transitions. [2021-03-25 12:34:40,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5003248862897985 [2021-03-25 12:34:40,055 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 770 transitions. [2021-03-25 12:34:40,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 770 transitions. [2021-03-25 12:34:40,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:40,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 770 transitions. [2021-03-25 12:34:40,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,061 INFO L185 Difference]: Start difference. First operand has 92 places, 109 transitions, 1915 flow. Second operand 9 states and 770 transitions. [2021-03-25 12:34:40,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 2421 flow [2021-03-25 12:34:40,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 2238 flow, removed 78 selfloop flow, removed 3 redundant places. [2021-03-25 12:34:40,080 INFO L241 Difference]: Finished difference. Result has 100 places, 118 transitions, 2269 flow [2021-03-25 12:34:40,080 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2269, PETRI_PLACES=100, PETRI_TRANSITIONS=118} [2021-03-25 12:34:40,080 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2021-03-25 12:34:40,080 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:40,080 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 118 transitions, 2269 flow [2021-03-25 12:34:40,081 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 118 transitions, 2269 flow [2021-03-25 12:34:40,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 118 transitions, 2269 flow [2021-03-25 12:34:40,107 INFO L129 PetriNetUnfolder]: 87/271 cut-off events. [2021-03-25 12:34:40,107 INFO L130 PetriNetUnfolder]: For 4503/4570 co-relation queries the response was YES. [2021-03-25 12:34:40,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 271 events. 87/271 cut-off events. For 4503/4570 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1616 event pairs, 0 based on Foata normal form. 2/214 useless extension candidates. Maximal degree in co-relation 1847. Up to 108 conditions per place. [2021-03-25 12:34:40,111 INFO L142 LiptonReduction]: Number of co-enabled transitions 650 [2021-03-25 12:34:40,338 INFO L154 LiptonReduction]: Checked pairs total: 469 [2021-03-25 12:34:40,338 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 12:34:40,338 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 258 [2021-03-25 12:34:40,340 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 118 transitions, 2277 flow [2021-03-25 12:34:40,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:40,341 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:40,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 12:34:40,341 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:40,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:40,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1361107682, now seen corresponding path program 1 times [2021-03-25 12:34:40,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:40,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947700852] [2021-03-25 12:34:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:40,369 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:40,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,375 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:40,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,381 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:34:40,382 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:34:40,396 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:40,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:40,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947700852] [2021-03-25 12:34:40,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:40,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:40,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859479580] [2021-03-25 12:34:40,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:40,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:40,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:40,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:40,405 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2021-03-25 12:34:40,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 118 transitions, 2277 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:40,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2021-03-25 12:34:40,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:40,629 INFO L129 PetriNetUnfolder]: 88/273 cut-off events. [2021-03-25 12:34:40,629 INFO L130 PetriNetUnfolder]: For 4786/4997 co-relation queries the response was YES. [2021-03-25 12:34:40,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 273 events. 88/273 cut-off events. For 4786/4997 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1619 event pairs, 0 based on Foata normal form. 39/254 useless extension candidates. Maximal degree in co-relation 2038. Up to 111 conditions per place. [2021-03-25 12:34:40,632 INFO L132 encePairwiseOnDemand]: 141/179 looper letters, 58 selfloop transitions, 56 changer transitions 0/123 dead transitions. [2021-03-25 12:34:40,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 2619 flow [2021-03-25 12:34:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2021-03-25 12:34:40,634 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4876296887470072 [2021-03-25 12:34:40,634 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2021-03-25 12:34:40,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2021-03-25 12:34:40,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:40,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2021-03-25 12:34:40,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,637 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,637 INFO L185 Difference]: Start difference. First operand has 100 places, 118 transitions, 2277 flow. Second operand 7 states and 611 transitions. [2021-03-25 12:34:40,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 2619 flow [2021-03-25 12:34:40,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 123 transitions, 2523 flow, removed 24 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:40,657 INFO L241 Difference]: Finished difference. Result has 102 places, 119 transitions, 2371 flow [2021-03-25 12:34:40,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2189, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2371, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2021-03-25 12:34:40,658 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2021-03-25 12:34:40,658 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:40,658 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 119 transitions, 2371 flow [2021-03-25 12:34:40,658 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 119 transitions, 2371 flow [2021-03-25 12:34:40,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 119 transitions, 2371 flow [2021-03-25 12:34:40,682 INFO L129 PetriNetUnfolder]: 88/273 cut-off events. [2021-03-25 12:34:40,682 INFO L130 PetriNetUnfolder]: For 4711/4801 co-relation queries the response was YES. [2021-03-25 12:34:40,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 273 events. 88/273 cut-off events. For 4711/4801 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1654 event pairs, 0 based on Foata normal form. 2/216 useless extension candidates. Maximal degree in co-relation 1931. Up to 108 conditions per place. [2021-03-25 12:34:40,686 INFO L142 LiptonReduction]: Number of co-enabled transitions 654 [2021-03-25 12:34:40,723 INFO L154 LiptonReduction]: Checked pairs total: 52 [2021-03-25 12:34:40,723 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:34:40,723 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-03-25 12:34:40,723 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 2371 flow [2021-03-25 12:34:40,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:40,724 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:40,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 12:34:40,724 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1156166649, now seen corresponding path program 1 times [2021-03-25 12:34:40,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:40,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037832190] [2021-03-25 12:34:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:40,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:40,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,773 INFO L142 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-03-25 12:34:40,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,781 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 12:34:40,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:40,794 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-25 12:34:40,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:40,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037832190] [2021-03-25 12:34:40,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77628279] [2021-03-25 12:34:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:40,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:40,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:40,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:40,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:40,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:40,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:40,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:40,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:40,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:40,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:40,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:40,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:40,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:40,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:40,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:40,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:40,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:40,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:40,931 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 12:34:40,931 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 12:34:40,932 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:40,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:40,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:40,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:40,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:40,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:40,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:34:40,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501185117] [2021-03-25 12:34:40,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:34:40,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:40,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:34:40,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:34:40,959 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 180 [2021-03-25 12:34:40,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 2371 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:40,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:40,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 180 [2021-03-25 12:34:40,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:41,353 INFO L129 PetriNetUnfolder]: 98/307 cut-off events. [2021-03-25 12:34:41,354 INFO L130 PetriNetUnfolder]: For 6065/6285 co-relation queries the response was YES. [2021-03-25 12:34:41,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 307 events. 98/307 cut-off events. For 6065/6285 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1847 event pairs, 0 based on Foata normal form. 29/270 useless extension candidates. Maximal degree in co-relation 2337. Up to 126 conditions per place. [2021-03-25 12:34:41,359 INFO L132 encePairwiseOnDemand]: 136/180 looper letters, 46 selfloop transitions, 82 changer transitions 0/137 dead transitions. [2021-03-25 12:34:41,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 137 transitions, 3055 flow [2021-03-25 12:34:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 12:34:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 12:34:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 944 transitions. [2021-03-25 12:34:41,361 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4767676767676768 [2021-03-25 12:34:41,361 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 944 transitions. [2021-03-25 12:34:41,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 944 transitions. [2021-03-25 12:34:41,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:41,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 944 transitions. [2021-03-25 12:34:41,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.81818181818181) internal successors, (944), 11 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:41,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 180.0) internal successors, (2160), 12 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:41,366 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 180.0) internal successors, (2160), 12 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:41,366 INFO L185 Difference]: Start difference. First operand has 102 places, 119 transitions, 2371 flow. Second operand 11 states and 944 transitions. [2021-03-25 12:34:41,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 137 transitions, 3055 flow [2021-03-25 12:34:41,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 137 transitions, 2979 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:41,390 INFO L241 Difference]: Finished difference. Result has 110 places, 137 transitions, 2959 flow [2021-03-25 12:34:41,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2959, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2021-03-25 12:34:41,390 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2021-03-25 12:34:41,390 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:41,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 137 transitions, 2959 flow [2021-03-25 12:34:41,391 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 137 transitions, 2959 flow [2021-03-25 12:34:41,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 137 transitions, 2959 flow [2021-03-25 12:34:41,420 INFO L129 PetriNetUnfolder]: 98/305 cut-off events. [2021-03-25 12:34:41,420 INFO L130 PetriNetUnfolder]: For 6026/6140 co-relation queries the response was YES. [2021-03-25 12:34:41,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 305 events. 98/305 cut-off events. For 6026/6140 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1841 event pairs, 0 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 2289. Up to 126 conditions per place. [2021-03-25 12:34:41,425 INFO L142 LiptonReduction]: Number of co-enabled transitions 762 [2021-03-25 12:34:41,640 INFO L154 LiptonReduction]: Checked pairs total: 585 [2021-03-25 12:34:41,640 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 12:34:41,640 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 250 [2021-03-25 12:34:41,640 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 136 transitions, 2950 flow [2021-03-25 12:34:41,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:41,641 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:41,641 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:41,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:41,850 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash -20668083, now seen corresponding path program 1 times [2021-03-25 12:34:41,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:41,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834650547] [2021-03-25 12:34:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:41,876 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:41,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:41,881 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:41,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:41,891 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:34:41,891 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:34:41,905 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:41,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:41,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834650547] [2021-03-25 12:34:41,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:41,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:41,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102755628] [2021-03-25 12:34:41,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:41,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:41,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:41,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:41,913 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 189 [2021-03-25 12:34:41,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 136 transitions, 2950 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:41,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:41,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 189 [2021-03-25 12:34:41,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:42,159 INFO L129 PetriNetUnfolder]: 98/308 cut-off events. [2021-03-25 12:34:42,159 INFO L130 PetriNetUnfolder]: For 6656/7002 co-relation queries the response was YES. [2021-03-25 12:34:42,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 308 events. 98/308 cut-off events. For 6656/7002 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1910 event pairs, 0 based on Foata normal form. 28/269 useless extension candidates. Maximal degree in co-relation 2497. Up to 128 conditions per place. [2021-03-25 12:34:42,163 INFO L132 encePairwiseOnDemand]: 142/189 looper letters, 60 selfloop transitions, 72 changer transitions 0/141 dead transitions. [2021-03-25 12:34:42,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 141 transitions, 3326 flow [2021-03-25 12:34:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 621 transitions. [2021-03-25 12:34:42,165 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2021-03-25 12:34:42,165 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 621 transitions. [2021-03-25 12:34:42,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 621 transitions. [2021-03-25 12:34:42,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:42,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 621 transitions. [2021-03-25 12:34:42,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,168 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,168 INFO L185 Difference]: Start difference. First operand has 110 places, 136 transitions, 2950 flow. Second operand 7 states and 621 transitions. [2021-03-25 12:34:42,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 141 transitions, 3326 flow [2021-03-25 12:34:42,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 141 transitions, 3123 flow, removed 84 selfloop flow, removed 3 redundant places. [2021-03-25 12:34:42,201 INFO L241 Difference]: Finished difference. Result has 114 places, 137 transitions, 2976 flow [2021-03-25 12:34:42,201 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2976, PETRI_PLACES=114, PETRI_TRANSITIONS=137} [2021-03-25 12:34:42,201 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2021-03-25 12:34:42,201 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:42,201 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 137 transitions, 2976 flow [2021-03-25 12:34:42,201 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 137 transitions, 2976 flow [2021-03-25 12:34:42,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 137 transitions, 2976 flow [2021-03-25 12:34:42,230 INFO L129 PetriNetUnfolder]: 98/308 cut-off events. [2021-03-25 12:34:42,230 INFO L130 PetriNetUnfolder]: For 6258/6380 co-relation queries the response was YES. [2021-03-25 12:34:42,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 308 events. 98/308 cut-off events. For 6258/6380 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1936 event pairs, 0 based on Foata normal form. 3/244 useless extension candidates. Maximal degree in co-relation 2345. Up to 123 conditions per place. [2021-03-25 12:34:42,235 INFO L142 LiptonReduction]: Number of co-enabled transitions 756 [2021-03-25 12:34:42,385 INFO L154 LiptonReduction]: Checked pairs total: 330 [2021-03-25 12:34:42,385 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:34:42,385 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 184 [2021-03-25 12:34:42,386 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 137 transitions, 2987 flow [2021-03-25 12:34:42,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,386 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:42,386 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:42,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 12:34:42,386 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1361028601, now seen corresponding path program 1 times [2021-03-25 12:34:42,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:42,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298275593] [2021-03-25 12:34:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:42,401 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:42,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:42,406 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:42,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:42,412 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:42,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:42,420 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:42,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:42,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298275593] [2021-03-25 12:34:42,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:42,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:42,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397808005] [2021-03-25 12:34:42,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:42,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:42,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:42,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:42,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 194 [2021-03-25 12:34:42,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 137 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:42,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 194 [2021-03-25 12:34:42,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:42,747 INFO L129 PetriNetUnfolder]: 103/325 cut-off events. [2021-03-25 12:34:42,748 INFO L130 PetriNetUnfolder]: For 7538/7929 co-relation queries the response was YES. [2021-03-25 12:34:42,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 325 events. 103/325 cut-off events. For 7538/7929 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2067 event pairs, 0 based on Foata normal form. 50/303 useless extension candidates. Maximal degree in co-relation 2680. Up to 133 conditions per place. [2021-03-25 12:34:42,754 INFO L132 encePairwiseOnDemand]: 121/194 looper letters, 19 selfloop transitions, 117 changer transitions 0/145 dead transitions. [2021-03-25 12:34:42,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 145 transitions, 3496 flow [2021-03-25 12:34:42,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 792 transitions. [2021-03-25 12:34:42,756 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4536082474226804 [2021-03-25 12:34:42,756 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 792 transitions. [2021-03-25 12:34:42,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 792 transitions. [2021-03-25 12:34:42,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:42,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 792 transitions. [2021-03-25 12:34:42,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,766 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,766 INFO L185 Difference]: Start difference. First operand has 114 places, 137 transitions, 2987 flow. Second operand 9 states and 792 transitions. [2021-03-25 12:34:42,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 145 transitions, 3496 flow [2021-03-25 12:34:42,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 145 transitions, 3399 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:42,794 INFO L241 Difference]: Finished difference. Result has 120 places, 144 transitions, 3474 flow [2021-03-25 12:34:42,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3474, PETRI_PLACES=120, PETRI_TRANSITIONS=144} [2021-03-25 12:34:42,794 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2021-03-25 12:34:42,794 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:42,795 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 144 transitions, 3474 flow [2021-03-25 12:34:42,795 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 144 transitions, 3474 flow [2021-03-25 12:34:42,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 144 transitions, 3474 flow [2021-03-25 12:34:42,825 INFO L129 PetriNetUnfolder]: 103/325 cut-off events. [2021-03-25 12:34:42,826 INFO L130 PetriNetUnfolder]: For 7964/8219 co-relation queries the response was YES. [2021-03-25 12:34:42,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 325 events. 103/325 cut-off events. For 7964/8219 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2076 event pairs, 0 based on Foata normal form. 4/259 useless extension candidates. Maximal degree in co-relation 2710. Up to 133 conditions per place. [2021-03-25 12:34:42,831 INFO L142 LiptonReduction]: Number of co-enabled transitions 788 [2021-03-25 12:34:42,926 INFO L154 LiptonReduction]: Checked pairs total: 285 [2021-03-25 12:34:42,926 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:34:42,926 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 132 [2021-03-25 12:34:42,928 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 144 transitions, 3474 flow [2021-03-25 12:34:42,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,928 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:42,928 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:42,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 12:34:42,928 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:42,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:42,929 INFO L82 PathProgramCache]: Analyzing trace with hash 265587924, now seen corresponding path program 1 times [2021-03-25 12:34:42,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:42,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752638887] [2021-03-25 12:34:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:42,954 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:42,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:42,959 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:42,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:42,965 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:34:42,965 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:34:42,979 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:42,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:42,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752638887] [2021-03-25 12:34:42,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:42,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:42,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29210024] [2021-03-25 12:34:42,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:42,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:42,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:42,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:42,988 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2021-03-25 12:34:42,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 144 transitions, 3474 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:42,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:42,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2021-03-25 12:34:42,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:43,221 INFO L129 PetriNetUnfolder]: 104/327 cut-off events. [2021-03-25 12:34:43,222 INFO L130 PetriNetUnfolder]: For 8474/8787 co-relation queries the response was YES. [2021-03-25 12:34:43,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 327 events. 104/327 cut-off events. For 8474/8787 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2082 event pairs, 0 based on Foata normal form. 49/306 useless extension candidates. Maximal degree in co-relation 2931. Up to 135 conditions per place. [2021-03-25 12:34:43,226 INFO L132 encePairwiseOnDemand]: 144/198 looper letters, 60 selfloop transitions, 81 changer transitions 0/150 dead transitions. [2021-03-25 12:34:43,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 150 transitions, 3918 flow [2021-03-25 12:34:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2021-03-25 12:34:43,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4538239538239538 [2021-03-25 12:34:43,228 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2021-03-25 12:34:43,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2021-03-25 12:34:43,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:43,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2021-03-25 12:34:43,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,231 INFO L185 Difference]: Start difference. First operand has 120 places, 144 transitions, 3474 flow. Second operand 7 states and 629 transitions. [2021-03-25 12:34:43,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 150 transitions, 3918 flow [2021-03-25 12:34:43,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 150 transitions, 3747 flow, removed 39 selfloop flow, removed 7 redundant places. [2021-03-25 12:34:43,266 INFO L241 Difference]: Finished difference. Result has 120 places, 145 transitions, 3570 flow [2021-03-25 12:34:43,266 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3570, PETRI_PLACES=120, PETRI_TRANSITIONS=145} [2021-03-25 12:34:43,266 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2021-03-25 12:34:43,266 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:43,267 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 145 transitions, 3570 flow [2021-03-25 12:34:43,267 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 145 transitions, 3570 flow [2021-03-25 12:34:43,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 145 transitions, 3570 flow [2021-03-25 12:34:43,299 INFO L129 PetriNetUnfolder]: 104/327 cut-off events. [2021-03-25 12:34:43,299 INFO L130 PetriNetUnfolder]: For 8098/8237 co-relation queries the response was YES. [2021-03-25 12:34:43,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 327 events. 104/327 cut-off events. For 8098/8237 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2109 event pairs, 0 based on Foata normal form. 3/260 useless extension candidates. Maximal degree in co-relation 2781. Up to 132 conditions per place. [2021-03-25 12:34:43,304 INFO L142 LiptonReduction]: Number of co-enabled transitions 792 [2021-03-25 12:34:43,345 INFO L154 LiptonReduction]: Checked pairs total: 64 [2021-03-25 12:34:43,345 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:34:43,345 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 79 [2021-03-25 12:34:43,346 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 145 transitions, 3570 flow [2021-03-25 12:34:43,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,346 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:43,346 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:43,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 12:34:43,346 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:43,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1470484253, now seen corresponding path program 1 times [2021-03-25 12:34:43,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:43,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293349726] [2021-03-25 12:34:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:43,375 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:43,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:43,380 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:43,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:43,390 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:43,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:43,397 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:43,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:43,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293349726] [2021-03-25 12:34:43,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:43,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:43,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208439419] [2021-03-25 12:34:43,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:43,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:43,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:43,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:43,406 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2021-03-25 12:34:43,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 145 transitions, 3570 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:43,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2021-03-25 12:34:43,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:43,724 INFO L129 PetriNetUnfolder]: 110/346 cut-off events. [2021-03-25 12:34:43,724 INFO L130 PetriNetUnfolder]: For 9677/10021 co-relation queries the response was YES. [2021-03-25 12:34:43,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3222 conditions, 346 events. 110/346 cut-off events. For 9677/10021 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2245 event pairs, 0 based on Foata normal form. 50/322 useless extension candidates. Maximal degree in co-relation 3171. Up to 143 conditions per place. [2021-03-25 12:34:43,729 INFO L132 encePairwiseOnDemand]: 120/199 looper letters, 19 selfloop transitions, 126 changer transitions 0/154 dead transitions. [2021-03-25 12:34:43,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 154 transitions, 4166 flow [2021-03-25 12:34:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 798 transitions. [2021-03-25 12:34:43,731 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4455611390284757 [2021-03-25 12:34:43,731 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 798 transitions. [2021-03-25 12:34:43,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 798 transitions. [2021-03-25 12:34:43,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:43,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 798 transitions. [2021-03-25 12:34:43,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,734 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,734 INFO L185 Difference]: Start difference. First operand has 120 places, 145 transitions, 3570 flow. Second operand 9 states and 798 transitions. [2021-03-25 12:34:43,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 154 transitions, 4166 flow [2021-03-25 12:34:43,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 154 transitions, 4072 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:43,763 INFO L241 Difference]: Finished difference. Result has 127 places, 153 transitions, 4153 flow [2021-03-25 12:34:43,764 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=3478, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4153, PETRI_PLACES=127, PETRI_TRANSITIONS=153} [2021-03-25 12:34:43,764 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2021-03-25 12:34:43,764 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:43,764 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 153 transitions, 4153 flow [2021-03-25 12:34:43,764 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 153 transitions, 4153 flow [2021-03-25 12:34:43,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 153 transitions, 4153 flow [2021-03-25 12:34:43,801 INFO L129 PetriNetUnfolder]: 110/344 cut-off events. [2021-03-25 12:34:43,801 INFO L130 PetriNetUnfolder]: For 10275/10375 co-relation queries the response was YES. [2021-03-25 12:34:43,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3265 conditions, 344 events. 110/344 cut-off events. For 10275/10375 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2267 event pairs, 0 based on Foata normal form. 3/272 useless extension candidates. Maximal degree in co-relation 3213. Up to 143 conditions per place. [2021-03-25 12:34:43,824 INFO L142 LiptonReduction]: Number of co-enabled transitions 828 [2021-03-25 12:34:43,929 INFO L154 LiptonReduction]: Checked pairs total: 301 [2021-03-25 12:34:43,929 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:34:43,929 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 165 [2021-03-25 12:34:43,929 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 153 transitions, 4153 flow [2021-03-25 12:34:43,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:43,930 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:43,930 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:43,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 12:34:43,930 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -728513322, now seen corresponding path program 1 times [2021-03-25 12:34:43,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:43,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909253391] [2021-03-25 12:34:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:43,951 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:43,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:43,956 INFO L142 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-03-25 12:34:43,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:43,963 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 12:34:43,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:43,975 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-25 12:34:43,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:43,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909253391] [2021-03-25 12:34:43,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642721209] [2021-03-25 12:34:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:44,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:44,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:44,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:44,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:44,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:44,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:44,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:44,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:44,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:44,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:44,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:44,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:44,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:44,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:44,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:44,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:44,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:44,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:44,112 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 12:34:44,113 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 12:34:44,114 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:44,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:44,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:44,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:44,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:44,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:44,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:34:44,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382703952] [2021-03-25 12:34:44,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:34:44,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:44,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:34:44,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:34:44,136 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 203 [2021-03-25 12:34:44,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 153 transitions, 4153 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:44,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:44,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 203 [2021-03-25 12:34:44,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:44,550 INFO L129 PetriNetUnfolder]: 118/370 cut-off events. [2021-03-25 12:34:44,550 INFO L130 PetriNetUnfolder]: For 12594/13042 co-relation queries the response was YES. [2021-03-25 12:34:44,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3728 conditions, 370 events. 118/370 cut-off events. For 12594/13042 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2426 event pairs, 0 based on Foata normal form. 36/327 useless extension candidates. Maximal degree in co-relation 3674. Up to 157 conditions per place. [2021-03-25 12:34:44,555 INFO L132 encePairwiseOnDemand]: 148/203 looper letters, 64 selfloop transitions, 94 changer transitions 0/167 dead transitions. [2021-03-25 12:34:44,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 167 transitions, 4941 flow [2021-03-25 12:34:44,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 12:34:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 12:34:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 965 transitions. [2021-03-25 12:34:44,557 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.432154052843708 [2021-03-25 12:34:44,557 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 965 transitions. [2021-03-25 12:34:44,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 965 transitions. [2021-03-25 12:34:44,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:44,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 965 transitions. [2021-03-25 12:34:44,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.72727272727273) internal successors, (965), 11 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:44,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:44,561 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:44,561 INFO L185 Difference]: Start difference. First operand has 127 places, 153 transitions, 4153 flow. Second operand 11 states and 965 transitions. [2021-03-25 12:34:44,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 167 transitions, 4941 flow [2021-03-25 12:34:44,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 167 transitions, 4832 flow, removed 28 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:44,608 INFO L241 Difference]: Finished difference. Result has 136 places, 167 transitions, 4784 flow [2021-03-25 12:34:44,608 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4784, PETRI_PLACES=136, PETRI_TRANSITIONS=167} [2021-03-25 12:34:44,609 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2021-03-25 12:34:44,609 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:44,609 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 167 transitions, 4784 flow [2021-03-25 12:34:44,609 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 167 transitions, 4784 flow [2021-03-25 12:34:44,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 136 places, 167 transitions, 4784 flow [2021-03-25 12:34:44,644 INFO L129 PetriNetUnfolder]: 118/366 cut-off events. [2021-03-25 12:34:44,644 INFO L130 PetriNetUnfolder]: For 11992/12165 co-relation queries the response was YES. [2021-03-25 12:34:44,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 366 events. 118/366 cut-off events. For 11992/12165 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2372 event pairs, 0 based on Foata normal form. 3/292 useless extension candidates. Maximal degree in co-relation 3604. Up to 154 conditions per place. [2021-03-25 12:34:44,650 INFO L142 LiptonReduction]: Number of co-enabled transitions 916 [2021-03-25 12:34:44,871 INFO L154 LiptonReduction]: Checked pairs total: 596 [2021-03-25 12:34:44,872 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 12:34:44,872 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 263 [2021-03-25 12:34:44,872 INFO L480 AbstractCegarLoop]: Abstraction has has 136 places, 167 transitions, 4793 flow [2021-03-25 12:34:44,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:44,873 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:44,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:45,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-25 12:34:45,096 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:45,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1360476026, now seen corresponding path program 1 times [2021-03-25 12:34:45,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:45,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801960476] [2021-03-25 12:34:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:45,116 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:45,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:45,122 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:45,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:45,128 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:45,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:45,134 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:45,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:45,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801960476] [2021-03-25 12:34:45,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:45,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:45,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350754192] [2021-03-25 12:34:45,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:45,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:45,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:45,144 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 211 [2021-03-25 12:34:45,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 167 transitions, 4793 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:45,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:45,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 211 [2021-03-25 12:34:45,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:45,469 INFO L129 PetriNetUnfolder]: 125/391 cut-off events. [2021-03-25 12:34:45,469 INFO L130 PetriNetUnfolder]: For 15081/16021 co-relation queries the response was YES. [2021-03-25 12:34:45,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 391 events. 125/391 cut-off events. For 15081/16021 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2659 event pairs, 0 based on Foata normal form. 61/368 useless extension candidates. Maximal degree in co-relation 4102. Up to 168 conditions per place. [2021-03-25 12:34:45,474 INFO L132 encePairwiseOnDemand]: 122/211 looper letters, 27 selfloop transitions, 143 changer transitions 0/179 dead transitions. [2021-03-25 12:34:45,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 179 transitions, 5599 flow [2021-03-25 12:34:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 812 transitions. [2021-03-25 12:34:45,475 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.42759347024749866 [2021-03-25 12:34:45,475 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 812 transitions. [2021-03-25 12:34:45,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 812 transitions. [2021-03-25 12:34:45,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:45,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 812 transitions. [2021-03-25 12:34:45,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.22222222222223) internal successors, (812), 9 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:45,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:45,479 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:45,479 INFO L185 Difference]: Start difference. First operand has 136 places, 167 transitions, 4793 flow. Second operand 9 states and 812 transitions. [2021-03-25 12:34:45,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 179 transitions, 5599 flow [2021-03-25 12:34:45,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 5240 flow, removed 147 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:45,531 INFO L241 Difference]: Finished difference. Result has 143 places, 176 transitions, 5293 flow [2021-03-25 12:34:45,532 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5293, PETRI_PLACES=143, PETRI_TRANSITIONS=176} [2021-03-25 12:34:45,532 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2021-03-25 12:34:45,532 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:45,532 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 176 transitions, 5293 flow [2021-03-25 12:34:45,532 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 176 transitions, 5293 flow [2021-03-25 12:34:45,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 176 transitions, 5293 flow [2021-03-25 12:34:45,565 INFO L129 PetriNetUnfolder]: 125/391 cut-off events. [2021-03-25 12:34:45,565 INFO L130 PetriNetUnfolder]: For 14910/15127 co-relation queries the response was YES. [2021-03-25 12:34:45,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4108 conditions, 391 events. 125/391 cut-off events. For 14910/15127 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2643 event pairs, 0 based on Foata normal form. 5/313 useless extension candidates. Maximal degree in co-relation 4048. Up to 162 conditions per place. [2021-03-25 12:34:45,570 INFO L142 LiptonReduction]: Number of co-enabled transitions 956 [2021-03-25 12:34:45,764 INFO L154 LiptonReduction]: Checked pairs total: 584 [2021-03-25 12:34:45,764 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 12:34:45,764 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 232 [2021-03-25 12:34:45,765 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 176 transitions, 5306 flow [2021-03-25 12:34:45,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:45,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:45,765 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:45,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-25 12:34:45,765 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:45,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:45,766 INFO L82 PathProgramCache]: Analyzing trace with hash 408246851, now seen corresponding path program 1 times [2021-03-25 12:34:45,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:45,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401237554] [2021-03-25 12:34:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:45,780 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:45,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:45,785 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:45,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:45,791 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:45,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:45,797 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:45,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:45,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401237554] [2021-03-25 12:34:45,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:45,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:45,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484074510] [2021-03-25 12:34:45,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:45,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:45,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:45,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:45,805 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 218 [2021-03-25 12:34:45,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 176 transitions, 5306 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:45,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:45,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 218 [2021-03-25 12:34:45,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:46,145 INFO L129 PetriNetUnfolder]: 130/408 cut-off events. [2021-03-25 12:34:46,145 INFO L130 PetriNetUnfolder]: For 17320/18022 co-relation queries the response was YES. [2021-03-25 12:34:46,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4545 conditions, 408 events. 130/408 cut-off events. For 17320/18022 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2774 event pairs, 0 based on Foata normal form. 64/385 useless extension candidates. Maximal degree in co-relation 4483. Up to 172 conditions per place. [2021-03-25 12:34:46,151 INFO L132 encePairwiseOnDemand]: 120/218 looper letters, 18 selfloop transitions, 158 changer transitions 0/185 dead transitions. [2021-03-25 12:34:46,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 185 transitions, 5994 flow [2021-03-25 12:34:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 818 transitions. [2021-03-25 12:34:46,153 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4169215086646279 [2021-03-25 12:34:46,153 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 818 transitions. [2021-03-25 12:34:46,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 818 transitions. [2021-03-25 12:34:46,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:46,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 818 transitions. [2021-03-25 12:34:46,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.88888888888889) internal successors, (818), 9 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 218.0) internal successors, (2180), 10 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,156 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 218.0) internal successors, (2180), 10 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,156 INFO L185 Difference]: Start difference. First operand has 143 places, 176 transitions, 5306 flow. Second operand 9 states and 818 transitions. [2021-03-25 12:34:46,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 185 transitions, 5994 flow [2021-03-25 12:34:46,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 185 transitions, 5826 flow, removed 44 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:46,210 INFO L241 Difference]: Finished difference. Result has 149 places, 184 transitions, 5932 flow [2021-03-25 12:34:46,210 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=5138, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5932, PETRI_PLACES=149, PETRI_TRANSITIONS=184} [2021-03-25 12:34:46,210 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2021-03-25 12:34:46,210 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:46,210 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 184 transitions, 5932 flow [2021-03-25 12:34:46,211 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 184 transitions, 5932 flow [2021-03-25 12:34:46,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 184 transitions, 5932 flow [2021-03-25 12:34:46,260 INFO L129 PetriNetUnfolder]: 130/408 cut-off events. [2021-03-25 12:34:46,260 INFO L130 PetriNetUnfolder]: For 17514/17760 co-relation queries the response was YES. [2021-03-25 12:34:46,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4591 conditions, 408 events. 130/408 cut-off events. For 17514/17760 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 2802 event pairs, 0 based on Foata normal form. 5/327 useless extension candidates. Maximal degree in co-relation 4528. Up to 169 conditions per place. [2021-03-25 12:34:46,268 INFO L142 LiptonReduction]: Number of co-enabled transitions 994 [2021-03-25 12:34:46,367 INFO L154 LiptonReduction]: Checked pairs total: 366 [2021-03-25 12:34:46,367 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:34:46,367 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 157 [2021-03-25 12:34:46,368 INFO L480 AbstractCegarLoop]: Abstraction has has 149 places, 184 transitions, 5932 flow [2021-03-25 12:34:46,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,368 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:46,368 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:46,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 12:34:46,368 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:46,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:46,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1426554386, now seen corresponding path program 1 times [2021-03-25 12:34:46,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:46,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881892590] [2021-03-25 12:34:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:46,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:34:46,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:34:46,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:46,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881892590] [2021-03-25 12:34:46,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758127256] [2021-03-25 12:34:46,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:46,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-25 12:34:46,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:46,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:34:46,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:34:46,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:34:46,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:34:46,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:46,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:46,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:46,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:46,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:46,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:46,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:34:46,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:34:46,460 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-25 12:34:46,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:46,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:34:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:46,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-25 12:34:46,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-03-25 12:34:46,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466924233] [2021-03-25 12:34:46,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 12:34:46,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 12:34:46,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 12:34:46,467 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 222 [2021-03-25 12:34:46,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 184 transitions, 5932 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:46,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 222 [2021-03-25 12:34:46,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:46,617 INFO L129 PetriNetUnfolder]: 124/400 cut-off events. [2021-03-25 12:34:46,617 INFO L130 PetriNetUnfolder]: For 18428/18768 co-relation queries the response was YES. [2021-03-25 12:34:46,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 400 events. 124/400 cut-off events. For 18428/18768 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2751 event pairs, 0 based on Foata normal form. 57/372 useless extension candidates. Maximal degree in co-relation 4631. Up to 163 conditions per place. [2021-03-25 12:34:46,624 INFO L132 encePairwiseOnDemand]: 218/222 looper letters, 59 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2021-03-25 12:34:46,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 182 transitions, 5983 flow [2021-03-25 12:34:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 12:34:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 12:34:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 665 transitions. [2021-03-25 12:34:46,625 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7488738738738738 [2021-03-25 12:34:46,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 665 transitions. [2021-03-25 12:34:46,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 665 transitions. [2021-03-25 12:34:46,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:46,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 665 transitions. [2021-03-25 12:34:46,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,628 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,628 INFO L185 Difference]: Start difference. First operand has 149 places, 184 transitions, 5932 flow. Second operand 4 states and 665 transitions. [2021-03-25 12:34:46,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 182 transitions, 5983 flow [2021-03-25 12:34:46,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 182 transitions, 5767 flow, removed 55 selfloop flow, removed 6 redundant places. [2021-03-25 12:34:46,698 INFO L241 Difference]: Finished difference. Result has 148 places, 182 transitions, 5658 flow [2021-03-25 12:34:46,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=5641, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5658, PETRI_PLACES=148, PETRI_TRANSITIONS=182} [2021-03-25 12:34:46,698 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2021-03-25 12:34:46,698 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:46,698 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 182 transitions, 5658 flow [2021-03-25 12:34:46,698 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 182 transitions, 5658 flow [2021-03-25 12:34:46,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 182 transitions, 5658 flow [2021-03-25 12:34:46,749 INFO L129 PetriNetUnfolder]: 124/398 cut-off events. [2021-03-25 12:34:46,749 INFO L130 PetriNetUnfolder]: For 15689/15965 co-relation queries the response was YES. [2021-03-25 12:34:46,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 398 events. 124/398 cut-off events. For 15689/15965 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 2750 event pairs, 0 based on Foata normal form. 5/374 useless extension candidates. Maximal degree in co-relation 4429. Up to 160 conditions per place. [2021-03-25 12:34:46,757 INFO L142 LiptonReduction]: Number of co-enabled transitions 974 [2021-03-25 12:34:46,820 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-25 12:34:46,820 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:34:46,820 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 122 [2021-03-25 12:34:46,821 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 182 transitions, 5659 flow [2021-03-25 12:34:46,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:46,821 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:46,821 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:47,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:47,024 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:47,024 INFO L82 PathProgramCache]: Analyzing trace with hash 232238410, now seen corresponding path program 1 times [2021-03-25 12:34:47,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:47,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837457753] [2021-03-25 12:34:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:47,037 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:47,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:47,042 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:47,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:47,049 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:34:47,049 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:34:47,063 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:47,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:47,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837457753] [2021-03-25 12:34:47,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:47,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:47,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789569095] [2021-03-25 12:34:47,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:47,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:47,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:47,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:47,072 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 223 [2021-03-25 12:34:47,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 182 transitions, 5659 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:47,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:47,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 223 [2021-03-25 12:34:47,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:47,424 INFO L129 PetriNetUnfolder]: 125/403 cut-off events. [2021-03-25 12:34:47,424 INFO L130 PetriNetUnfolder]: For 17547/18649 co-relation queries the response was YES. [2021-03-25 12:34:47,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4784 conditions, 403 events. 125/403 cut-off events. For 17547/18649 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2780 event pairs, 0 based on Foata normal form. 65/440 useless extension candidates. Maximal degree in co-relation 4719. Up to 163 conditions per place. [2021-03-25 12:34:47,431 INFO L132 encePairwiseOnDemand]: 159/223 looper letters, 82 selfloop transitions, 99 changer transitions 0/191 dead transitions. [2021-03-25 12:34:47,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 191 transitions, 6321 flow [2021-03-25 12:34:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2021-03-25 12:34:47,434 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4176809737347854 [2021-03-25 12:34:47,434 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2021-03-25 12:34:47,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2021-03-25 12:34:47,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:47,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2021-03-25 12:34:47,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:47,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:47,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:47,437 INFO L185 Difference]: Start difference. First operand has 148 places, 182 transitions, 5659 flow. Second operand 7 states and 652 transitions. [2021-03-25 12:34:47,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 191 transitions, 6321 flow [2021-03-25 12:34:47,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 191 transitions, 6317 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 12:34:47,512 INFO L241 Difference]: Finished difference. Result has 154 places, 183 transitions, 5957 flow [2021-03-25 12:34:47,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=5655, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5957, PETRI_PLACES=154, PETRI_TRANSITIONS=183} [2021-03-25 12:34:47,513 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2021-03-25 12:34:47,513 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:47,513 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 183 transitions, 5957 flow [2021-03-25 12:34:47,513 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 183 transitions, 5957 flow [2021-03-25 12:34:47,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 154 places, 183 transitions, 5957 flow [2021-03-25 12:34:47,563 INFO L129 PetriNetUnfolder]: 125/403 cut-off events. [2021-03-25 12:34:47,563 INFO L130 PetriNetUnfolder]: For 17306/17692 co-relation queries the response was YES. [2021-03-25 12:34:47,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4713 conditions, 403 events. 125/403 cut-off events. For 17306/17692 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2793 event pairs, 0 based on Foata normal form. 5/380 useless extension candidates. Maximal degree in co-relation 4648. Up to 163 conditions per place. [2021-03-25 12:34:47,569 INFO L142 LiptonReduction]: Number of co-enabled transitions 980 [2021-03-25 12:34:47,610 INFO L154 LiptonReduction]: Checked pairs total: 81 [2021-03-25 12:34:47,610 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:34:47,610 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-03-25 12:34:47,611 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 183 transitions, 5957 flow [2021-03-25 12:34:47,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:47,611 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:47,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:47,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-25 12:34:47,611 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:47,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:47,611 INFO L82 PathProgramCache]: Analyzing trace with hash 685103781, now seen corresponding path program 1 times [2021-03-25 12:34:47,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:47,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592639804] [2021-03-25 12:34:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:47,626 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:47,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:47,631 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:47,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:47,637 INFO L142 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size [2021-03-25 12:34:47,637 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:34:47,648 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:34:47,648 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:34:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:47,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592639804] [2021-03-25 12:34:47,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:47,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:47,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787654660] [2021-03-25 12:34:47,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:47,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:47,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:47,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:47,660 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 224 [2021-03-25 12:34:47,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 183 transitions, 5957 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:47,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:47,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 224 [2021-03-25 12:34:47,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:48,048 INFO L129 PetriNetUnfolder]: 131/425 cut-off events. [2021-03-25 12:34:48,048 INFO L130 PetriNetUnfolder]: For 20043/20865 co-relation queries the response was YES. [2021-03-25 12:34:48,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5202 conditions, 425 events. 131/425 cut-off events. For 20043/20865 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2996 event pairs, 0 based on Foata normal form. 48/443 useless extension candidates. Maximal degree in co-relation 5135. Up to 175 conditions per place. [2021-03-25 12:34:48,055 INFO L132 encePairwiseOnDemand]: 121/224 looper letters, 17 selfloop transitions, 164 changer transitions 0/191 dead transitions. [2021-03-25 12:34:48,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 191 transitions, 6630 flow [2021-03-25 12:34:48,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 824 transitions. [2021-03-25 12:34:48,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2021-03-25 12:34:48,057 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 824 transitions. [2021-03-25 12:34:48,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 824 transitions. [2021-03-25 12:34:48,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:48,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 824 transitions. [2021-03-25 12:34:48,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:48,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:48,060 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:48,060 INFO L185 Difference]: Start difference. First operand has 154 places, 183 transitions, 5957 flow. Second operand 9 states and 824 transitions. [2021-03-25 12:34:48,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 191 transitions, 6630 flow [2021-03-25 12:34:48,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 191 transitions, 6501 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:48,122 INFO L241 Difference]: Finished difference. Result has 161 places, 190 transitions, 6604 flow [2021-03-25 12:34:48,122 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=5829, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6604, PETRI_PLACES=161, PETRI_TRANSITIONS=190} [2021-03-25 12:34:48,122 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2021-03-25 12:34:48,122 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:48,123 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 190 transitions, 6604 flow [2021-03-25 12:34:48,123 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 190 transitions, 6604 flow [2021-03-25 12:34:48,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 161 places, 190 transitions, 6604 flow [2021-03-25 12:34:48,169 INFO L129 PetriNetUnfolder]: 131/425 cut-off events. [2021-03-25 12:34:48,169 INFO L130 PetriNetUnfolder]: For 20368/20611 co-relation queries the response was YES. [2021-03-25 12:34:48,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5255 conditions, 425 events. 131/425 cut-off events. For 20368/20611 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2984 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 5187. Up to 175 conditions per place. [2021-03-25 12:34:48,178 INFO L142 LiptonReduction]: Number of co-enabled transitions 1018 [2021-03-25 12:34:48,272 INFO L154 LiptonReduction]: Checked pairs total: 290 [2021-03-25 12:34:48,272 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:34:48,272 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 150 [2021-03-25 12:34:48,273 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 190 transitions, 6606 flow [2021-03-25 12:34:48,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:48,273 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:48,273 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:48,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-25 12:34:48,274 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:48,274 INFO L82 PathProgramCache]: Analyzing trace with hash -276458906, now seen corresponding path program 1 times [2021-03-25 12:34:48,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:48,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800819815] [2021-03-25 12:34:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:48,291 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:48,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,296 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:48,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,302 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:34:48,303 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:34:48,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:34:48,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:48,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:48,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800819815] [2021-03-25 12:34:48,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130677484] [2021-03-25 12:34:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:48,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:34:48,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:48,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:48,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:48,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:48,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:48,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:48,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:48,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:48,420 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 12:34:48,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:34:48,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:34:48,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:48,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:48,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:48,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:48,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:48,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:48,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:48,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:48,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:48,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:48,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,455 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:34:48,455 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:34:48,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:48,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:48,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:48,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:34:48,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:48,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:34:48,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:34:48,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:48,486 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:34:48,486 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:34:48,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:48,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:48,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 12:34:48,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888565410] [2021-03-25 12:34:48,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 12:34:48,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:48,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 12:34:48,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-03-25 12:34:48,500 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 227 [2021-03-25 12:34:48,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 190 transitions, 6606 flow. Second operand has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:48,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:48,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 227 [2021-03-25 12:34:48,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:48,963 INFO L129 PetriNetUnfolder]: 132/432 cut-off events. [2021-03-25 12:34:48,964 INFO L130 PetriNetUnfolder]: For 22034/22806 co-relation queries the response was YES. [2021-03-25 12:34:48,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5571 conditions, 432 events. 132/432 cut-off events. For 22034/22806 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3066 event pairs, 0 based on Foata normal form. 32/432 useless extension candidates. Maximal degree in co-relation 5501. Up to 178 conditions per place. [2021-03-25 12:34:48,970 INFO L132 encePairwiseOnDemand]: 154/227 looper letters, 70 selfloop transitions, 121 changer transitions 0/201 dead transitions. [2021-03-25 12:34:48,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 201 transitions, 7418 flow [2021-03-25 12:34:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 12:34:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 12:34:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 901 transitions. [2021-03-25 12:34:48,972 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3969162995594714 [2021-03-25 12:34:48,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 901 transitions. [2021-03-25 12:34:48,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 901 transitions. [2021-03-25 12:34:48,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:48,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 901 transitions. [2021-03-25 12:34:48,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.1) internal successors, (901), 10 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:48,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:48,975 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:48,975 INFO L185 Difference]: Start difference. First operand has 161 places, 190 transitions, 6606 flow. Second operand 10 states and 901 transitions. [2021-03-25 12:34:48,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 201 transitions, 7418 flow [2021-03-25 12:34:49,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 201 transitions, 7218 flow, removed 61 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:49,049 INFO L241 Difference]: Finished difference. Result has 168 places, 200 transitions, 7143 flow [2021-03-25 12:34:49,049 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7143, PETRI_PLACES=168, PETRI_TRANSITIONS=200} [2021-03-25 12:34:49,049 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2021-03-25 12:34:49,049 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:49,049 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 200 transitions, 7143 flow [2021-03-25 12:34:49,050 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 200 transitions, 7143 flow [2021-03-25 12:34:49,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 200 transitions, 7143 flow [2021-03-25 12:34:49,122 INFO L129 PetriNetUnfolder]: 132/432 cut-off events. [2021-03-25 12:34:49,122 INFO L130 PetriNetUnfolder]: For 21077/21291 co-relation queries the response was YES. [2021-03-25 12:34:49,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 432 events. 132/432 cut-off events. For 21077/21291 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3132 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 5336. Up to 173 conditions per place. [2021-03-25 12:34:49,129 INFO L142 LiptonReduction]: Number of co-enabled transitions 1062 [2021-03-25 12:34:49,211 INFO L154 LiptonReduction]: Checked pairs total: 96 [2021-03-25 12:34:49,211 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:34:49,211 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 162 [2021-03-25 12:34:49,212 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 200 transitions, 7148 flow [2021-03-25 12:34:49,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:49,212 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:49,212 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:49,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:49,419 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:49,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:49,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1326867934, now seen corresponding path program 1 times [2021-03-25 12:34:49,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:49,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146650002] [2021-03-25 12:34:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:49,436 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:49,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:49,442 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 12:34:49,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:49,449 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 12:34:49,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:49,456 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:49,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:49,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146650002] [2021-03-25 12:34:49,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:49,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:49,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933168940] [2021-03-25 12:34:49,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:49,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:49,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:49,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:49,465 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 229 [2021-03-25 12:34:49,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 200 transitions, 7148 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:49,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:49,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 229 [2021-03-25 12:34:49,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:49,819 INFO L129 PetriNetUnfolder]: 141/458 cut-off events. [2021-03-25 12:34:49,819 INFO L130 PetriNetUnfolder]: For 25187/25959 co-relation queries the response was YES. [2021-03-25 12:34:49,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 458 events. 141/458 cut-off events. For 25187/25959 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3302 event pairs, 0 based on Foata normal form. 33/457 useless extension candidates. Maximal degree in co-relation 5971. Up to 187 conditions per place. [2021-03-25 12:34:49,824 INFO L132 encePairwiseOnDemand]: 164/229 looper letters, 97 selfloop transitions, 104 changer transitions 0/211 dead transitions. [2021-03-25 12:34:49,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 211 transitions, 7997 flow [2021-03-25 12:34:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 825 transitions. [2021-03-25 12:34:49,826 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4002911208151383 [2021-03-25 12:34:49,826 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 825 transitions. [2021-03-25 12:34:49,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 825 transitions. [2021-03-25 12:34:49,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:49,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 825 transitions. [2021-03-25 12:34:49,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.66666666666667) internal successors, (825), 9 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:49,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:49,829 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:49,829 INFO L185 Difference]: Start difference. First operand has 168 places, 200 transitions, 7148 flow. Second operand 9 states and 825 transitions. [2021-03-25 12:34:49,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 211 transitions, 7997 flow [2021-03-25 12:34:49,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 211 transitions, 7639 flow, removed 121 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:49,939 INFO L241 Difference]: Finished difference. Result has 175 places, 210 transitions, 7531 flow [2021-03-25 12:34:49,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=6791, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7531, PETRI_PLACES=175, PETRI_TRANSITIONS=210} [2021-03-25 12:34:49,940 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2021-03-25 12:34:49,940 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:49,940 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 210 transitions, 7531 flow [2021-03-25 12:34:49,940 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 210 transitions, 7531 flow [2021-03-25 12:34:49,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 210 transitions, 7531 flow [2021-03-25 12:34:50,000 INFO L129 PetriNetUnfolder]: 141/458 cut-off events. [2021-03-25 12:34:50,000 INFO L130 PetriNetUnfolder]: For 25347/25608 co-relation queries the response was YES. [2021-03-25 12:34:50,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5870 conditions, 458 events. 141/458 cut-off events. For 25347/25608 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3331 event pairs, 0 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 5796. Up to 170 conditions per place. [2021-03-25 12:34:50,007 INFO L142 LiptonReduction]: Number of co-enabled transitions 1114 [2021-03-25 12:34:50,182 INFO L154 LiptonReduction]: Checked pairs total: 490 [2021-03-25 12:34:50,183 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:34:50,183 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 243 [2021-03-25 12:34:50,183 INFO L480 AbstractCegarLoop]: Abstraction has has 175 places, 210 transitions, 7545 flow [2021-03-25 12:34:50,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:50,183 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:50,183 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:50,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-25 12:34:50,184 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:50,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:50,184 INFO L82 PathProgramCache]: Analyzing trace with hash -236614823, now seen corresponding path program 1 times [2021-03-25 12:34:50,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:50,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830806306] [2021-03-25 12:34:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:50,197 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:50,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,202 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:34:50,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,208 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 12:34:50,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:50,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:34:50,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:34:50,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:50,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830806306] [2021-03-25 12:34:50,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133128137] [2021-03-25 12:34:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:50,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:34:50,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:50,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:50,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:50,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:50,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:50,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:50,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:50,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:50,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:50,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:50,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:50,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:34:50,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,332 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 12:34:50,333 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 12:34:50,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:50,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:34:50,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:34:50,347 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-25 12:34:50,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:34:50,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:34:50,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:50,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:50,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:34:50,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:50,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:34:50,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:34:50,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:50,381 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:34:50,381 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:34:50,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:50,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:50,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 12:34:50,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989091002] [2021-03-25 12:34:50,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 12:34:50,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 12:34:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-25 12:34:50,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 234 [2021-03-25 12:34:50,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 210 transitions, 7545 flow. Second operand has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:50,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:50,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 234 [2021-03-25 12:34:50,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:51,091 INFO L129 PetriNetUnfolder]: 144/473 cut-off events. [2021-03-25 12:34:51,092 INFO L130 PetriNetUnfolder]: For 28093/29424 co-relation queries the response was YES. [2021-03-25 12:34:51,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6320 conditions, 473 events. 144/473 cut-off events. For 28093/29424 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3451 event pairs, 0 based on Foata normal form. 35/471 useless extension candidates. Maximal degree in co-relation 6244. Up to 178 conditions per place. [2021-03-25 12:34:51,103 INFO L132 encePairwiseOnDemand]: 120/234 looper letters, 22 selfloop transitions, 189 changer transitions 0/221 dead transitions. [2021-03-25 12:34:51,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 221 transitions, 8443 flow [2021-03-25 12:34:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 12:34:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 12:34:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1069 transitions. [2021-03-25 12:34:51,105 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3806980056980057 [2021-03-25 12:34:51,105 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1069 transitions. [2021-03-25 12:34:51,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1069 transitions. [2021-03-25 12:34:51,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:51,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1069 transitions. [2021-03-25 12:34:51,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 89.08333333333333) internal successors, (1069), 12 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:51,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 234.0) internal successors, (3042), 13 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:51,109 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 234.0) internal successors, (3042), 13 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:51,109 INFO L185 Difference]: Start difference. First operand has 175 places, 210 transitions, 7545 flow. Second operand 12 states and 1069 transitions. [2021-03-25 12:34:51,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 221 transitions, 8443 flow [2021-03-25 12:34:51,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 221 transitions, 8245 flow, removed 84 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:51,194 INFO L241 Difference]: Finished difference. Result has 187 places, 219 transitions, 8328 flow [2021-03-25 12:34:51,194 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=7431, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8328, PETRI_PLACES=187, PETRI_TRANSITIONS=219} [2021-03-25 12:34:51,194 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2021-03-25 12:34:51,194 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:51,195 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 219 transitions, 8328 flow [2021-03-25 12:34:51,195 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 219 transitions, 8328 flow [2021-03-25 12:34:51,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 187 places, 219 transitions, 8328 flow [2021-03-25 12:34:51,251 INFO L129 PetriNetUnfolder]: 144/469 cut-off events. [2021-03-25 12:34:51,251 INFO L130 PetriNetUnfolder]: For 28168/28571 co-relation queries the response was YES. [2021-03-25 12:34:51,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 469 events. 144/469 cut-off events. For 28168/28571 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3439 event pairs, 0 based on Foata normal form. 3/436 useless extension candidates. Maximal degree in co-relation 6225. Up to 178 conditions per place. [2021-03-25 12:34:51,259 INFO L142 LiptonReduction]: Number of co-enabled transitions 1160 [2021-03-25 12:34:51,381 INFO L154 LiptonReduction]: Checked pairs total: 543 [2021-03-25 12:34:51,381 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:34:51,381 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 187 [2021-03-25 12:34:51,381 INFO L480 AbstractCegarLoop]: Abstraction has has 187 places, 219 transitions, 8330 flow [2021-03-25 12:34:51,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:51,382 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:51,382 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:51,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-25 12:34:51,583 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:51,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1595772671, now seen corresponding path program 1 times [2021-03-25 12:34:51,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:51,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138742270] [2021-03-25 12:34:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:51,598 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:51,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:51,603 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 12:34:51,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:51,609 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:51,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:51,615 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:51,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:51,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138742270] [2021-03-25 12:34:51,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:51,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 12:34:51,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33586213] [2021-03-25 12:34:51,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 12:34:51,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 12:34:51,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:34:51,623 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 239 [2021-03-25 12:34:51,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 219 transitions, 8330 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:51,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:51,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 239 [2021-03-25 12:34:51,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:52,050 INFO L129 PetriNetUnfolder]: 150/492 cut-off events. [2021-03-25 12:34:52,050 INFO L130 PetriNetUnfolder]: For 32132/33574 co-relation queries the response was YES. [2021-03-25 12:34:52,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6884 conditions, 492 events. 150/492 cut-off events. For 32132/33574 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3647 event pairs, 0 based on Foata normal form. 34/489 useless extension candidates. Maximal degree in co-relation 6802. Up to 198 conditions per place. [2021-03-25 12:34:52,057 INFO L132 encePairwiseOnDemand]: 167/239 looper letters, 104 selfloop transitions, 115 changer transitions 0/229 dead transitions. [2021-03-25 12:34:52,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 229 transitions, 9231 flow [2021-03-25 12:34:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 836 transitions. [2021-03-25 12:34:52,058 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3886564388656439 [2021-03-25 12:34:52,058 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 836 transitions. [2021-03-25 12:34:52,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 836 transitions. [2021-03-25 12:34:52,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:52,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 836 transitions. [2021-03-25 12:34:52,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.88888888888889) internal successors, (836), 9 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:52,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:52,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:52,062 INFO L185 Difference]: Start difference. First operand has 187 places, 219 transitions, 8330 flow. Second operand 9 states and 836 transitions. [2021-03-25 12:34:52,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 229 transitions, 9231 flow [2021-03-25 12:34:52,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 229 transitions, 8743 flow, removed 185 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:52,193 INFO L241 Difference]: Finished difference. Result has 193 places, 228 transitions, 8622 flow [2021-03-25 12:34:52,193 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=7849, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8622, PETRI_PLACES=193, PETRI_TRANSITIONS=228} [2021-03-25 12:34:52,193 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2021-03-25 12:34:52,193 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:52,193 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 228 transitions, 8622 flow [2021-03-25 12:34:52,193 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 228 transitions, 8622 flow [2021-03-25 12:34:52,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 193 places, 228 transitions, 8622 flow [2021-03-25 12:34:52,245 INFO L129 PetriNetUnfolder]: 150/492 cut-off events. [2021-03-25 12:34:52,245 INFO L130 PetriNetUnfolder]: For 31204/31570 co-relation queries the response was YES. [2021-03-25 12:34:52,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6587 conditions, 492 events. 150/492 cut-off events. For 31204/31570 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3656 event pairs, 0 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 6504. Up to 165 conditions per place. [2021-03-25 12:34:52,253 INFO L142 LiptonReduction]: Number of co-enabled transitions 1200 [2021-03-25 12:34:52,417 INFO L154 LiptonReduction]: Checked pairs total: 847 [2021-03-25 12:34:52,417 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 12:34:52,417 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 224 [2021-03-25 12:34:52,417 INFO L480 AbstractCegarLoop]: Abstraction has has 193 places, 228 transitions, 8628 flow [2021-03-25 12:34:52,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:52,418 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:52,418 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:52,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-25 12:34:52,418 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:52,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:52,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1793523250, now seen corresponding path program 1 times [2021-03-25 12:34:52,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:52,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024578599] [2021-03-25 12:34:52,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:52,430 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:52,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,435 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:34:52,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:52,441 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:34:52,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:52,449 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:34:52,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:52,457 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:52,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:52,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024578599] [2021-03-25 12:34:52,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217434466] [2021-03-25 12:34:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:52,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:34:52,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:52,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:52,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:52,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:52,533 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:34:52,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:52,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:52,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:52,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:52,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:52,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:52,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:52,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:52,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:52,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:52,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:52,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:52,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:52,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:52,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:52,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:52,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:52,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:52,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:52,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:52,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:52,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:52,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:52,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:52,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:52,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:52,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:52,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:52,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:52,586 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:34:52,586 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:34:52,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:52,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:52,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 12:34:52,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126610287] [2021-03-25 12:34:52,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 12:34:52,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:52,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 12:34:52,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-03-25 12:34:52,593 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 246 [2021-03-25 12:34:52,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 228 transitions, 8628 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:52,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:52,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 246 [2021-03-25 12:34:52,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:52,958 INFO L129 PetriNetUnfolder]: 152/498 cut-off events. [2021-03-25 12:34:52,958 INFO L130 PetriNetUnfolder]: For 33427/34881 co-relation queries the response was YES. [2021-03-25 12:34:52,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 498 events. 152/498 cut-off events. For 33427/34881 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3678 event pairs, 0 based on Foata normal form. 34/495 useless extension candidates. Maximal degree in co-relation 6897. Up to 264 conditions per place. [2021-03-25 12:34:52,964 INFO L132 encePairwiseOnDemand]: 217/246 looper letters, 191 selfloop transitions, 34 changer transitions 0/235 dead transitions. [2021-03-25 12:34:52,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 235 transitions, 9358 flow [2021-03-25 12:34:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 673 transitions. [2021-03-25 12:34:52,965 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3908246225319396 [2021-03-25 12:34:52,965 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 673 transitions. [2021-03-25 12:34:52,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 673 transitions. [2021-03-25 12:34:52,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:52,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 673 transitions. [2021-03-25 12:34:52,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:52,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 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) [2021-03-25 12:34:52,968 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 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) [2021-03-25 12:34:52,968 INFO L185 Difference]: Start difference. First operand has 193 places, 228 transitions, 8628 flow. Second operand 7 states and 673 transitions. [2021-03-25 12:34:52,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 235 transitions, 9358 flow [2021-03-25 12:34:53,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 235 transitions, 9197 flow, removed 57 selfloop flow, removed 6 redundant places. [2021-03-25 12:34:53,069 INFO L241 Difference]: Finished difference. Result has 195 places, 231 transitions, 8708 flow [2021-03-25 12:34:53,069 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=8493, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8708, PETRI_PLACES=195, PETRI_TRANSITIONS=231} [2021-03-25 12:34:53,069 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2021-03-25 12:34:53,069 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:53,069 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 231 transitions, 8708 flow [2021-03-25 12:34:53,070 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 231 transitions, 8708 flow [2021-03-25 12:34:53,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 195 places, 231 transitions, 8708 flow [2021-03-25 12:34:53,122 INFO L129 PetriNetUnfolder]: 152/500 cut-off events. [2021-03-25 12:34:53,122 INFO L130 PetriNetUnfolder]: For 31501/31861 co-relation queries the response was YES. [2021-03-25 12:34:53,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6707 conditions, 500 events. 152/500 cut-off events. For 31501/31861 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3712 event pairs, 0 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 6623. Up to 169 conditions per place. [2021-03-25 12:34:53,130 INFO L142 LiptonReduction]: Number of co-enabled transitions 1214 [2021-03-25 12:34:53,211 INFO L154 LiptonReduction]: Checked pairs total: 110 [2021-03-25 12:34:53,211 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:34:53,211 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 142 [2021-03-25 12:34:53,211 INFO L480 AbstractCegarLoop]: Abstraction has has 195 places, 231 transitions, 8754 flow [2021-03-25 12:34:53,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:53,212 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:53,212 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:53,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-25 12:34:53,416 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1239644691, now seen corresponding path program 1 times [2021-03-25 12:34:53,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:53,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961229943] [2021-03-25 12:34:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:53,432 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:53,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,439 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:34:53,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,445 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:34:53,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,451 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:53,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:53,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961229943] [2021-03-25 12:34:53,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649294215] [2021-03-25 12:34:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:53,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:53,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:53,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:53,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:53,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:53,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:53,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:53,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:53,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:53,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:53,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:53,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:53,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:53,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:53,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:53,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:53,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:53,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:53,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:34:53,573 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-03-25 12:34:53,574 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:34:53,574 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:34:53,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:53,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:53,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-25 12:34:53,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120575683] [2021-03-25 12:34:53,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 12:34:53,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:53,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 12:34:53,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-25 12:34:53,581 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 248 [2021-03-25 12:34:53,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 231 transitions, 8754 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:53,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:53,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 248 [2021-03-25 12:34:53,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:54,064 INFO L129 PetriNetUnfolder]: 158/519 cut-off events. [2021-03-25 12:34:54,064 INFO L130 PetriNetUnfolder]: For 35837/37291 co-relation queries the response was YES. [2021-03-25 12:34:54,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7329 conditions, 519 events. 158/519 cut-off events. For 35837/37291 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3899 event pairs, 0 based on Foata normal form. 34/514 useless extension candidates. Maximal degree in co-relation 7243. Up to 258 conditions per place. [2021-03-25 12:34:54,072 INFO L132 encePairwiseOnDemand]: 208/248 looper letters, 177 selfloop transitions, 57 changer transitions 0/244 dead transitions. [2021-03-25 12:34:54,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 244 transitions, 9782 flow [2021-03-25 12:34:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 840 transitions. [2021-03-25 12:34:54,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2021-03-25 12:34:54,081 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 840 transitions. [2021-03-25 12:34:54,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 840 transitions. [2021-03-25 12:34:54,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:54,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 840 transitions. [2021-03-25 12:34:54,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.33333333333333) internal successors, (840), 9 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:54,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:54,084 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:54,084 INFO L185 Difference]: Start difference. First operand has 195 places, 231 transitions, 8754 flow. Second operand 9 states and 840 transitions. [2021-03-25 12:34:54,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 244 transitions, 9782 flow [2021-03-25 12:34:54,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 244 transitions, 9666 flow, removed 33 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:54,248 INFO L241 Difference]: Finished difference. Result has 202 places, 240 transitions, 9233 flow [2021-03-25 12:34:54,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=8638, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9233, PETRI_PLACES=202, PETRI_TRANSITIONS=240} [2021-03-25 12:34:54,248 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2021-03-25 12:34:54,249 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:54,249 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 240 transitions, 9233 flow [2021-03-25 12:34:54,249 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 240 transitions, 9233 flow [2021-03-25 12:34:54,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 240 transitions, 9233 flow [2021-03-25 12:34:54,306 INFO L129 PetriNetUnfolder]: 158/521 cut-off events. [2021-03-25 12:34:54,307 INFO L130 PetriNetUnfolder]: For 36170/36538 co-relation queries the response was YES. [2021-03-25 12:34:54,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 521 events. 158/521 cut-off events. For 36170/36538 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 3935 event pairs, 0 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 7064. Up to 178 conditions per place. [2021-03-25 12:34:54,316 INFO L142 LiptonReduction]: Number of co-enabled transitions 1260 [2021-03-25 12:34:54,472 INFO L154 LiptonReduction]: Checked pairs total: 269 [2021-03-25 12:34:54,473 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:34:54,473 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 224 [2021-03-25 12:34:54,473 INFO L480 AbstractCegarLoop]: Abstraction has has 202 places, 240 transitions, 9329 flow [2021-03-25 12:34:54,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:54,473 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:54,473 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:54,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-03-25 12:34:54,676 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:54,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1793639035, now seen corresponding path program 1 times [2021-03-25 12:34:54,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:54,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903978448] [2021-03-25 12:34:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:54,688 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:54,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,693 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:34:54,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:54,700 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:34:54,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:54,708 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:34:54,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:54,716 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:54,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:54,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903978448] [2021-03-25 12:34:54,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103856653] [2021-03-25 12:34:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:54,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:34:54,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:54,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:54,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:54,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:54,792 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:34:54,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:54,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:54,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:54,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:54,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:54,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:34:54,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:54,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:54,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:54,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:54,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:54,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:54,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:54,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:54,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:54,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:54,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:34:54,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:54,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:54,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:34:54,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:54,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:54,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:54,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:54,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:54,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:54,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:54,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:54,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:54,844 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:34:54,844 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:34:54,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:54,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:54,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 12:34:54,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348468713] [2021-03-25 12:34:54,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 12:34:54,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 12:34:54,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-03-25 12:34:54,852 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 252 [2021-03-25 12:34:54,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 240 transitions, 9329 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:54,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:54,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 252 [2021-03-25 12:34:54,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:55,250 INFO L129 PetriNetUnfolder]: 160/529 cut-off events. [2021-03-25 12:34:55,250 INFO L130 PetriNetUnfolder]: For 41170/42637 co-relation queries the response was YES. [2021-03-25 12:34:55,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7707 conditions, 529 events. 160/529 cut-off events. For 41170/42637 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3991 event pairs, 0 based on Foata normal form. 36/524 useless extension candidates. Maximal degree in co-relation 7618. Up to 276 conditions per place. [2021-03-25 12:34:55,260 INFO L132 encePairwiseOnDemand]: 220/252 looper letters, 199 selfloop transitions, 38 changer transitions 0/247 dead transitions. [2021-03-25 12:34:55,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 247 transitions, 10101 flow [2021-03-25 12:34:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 678 transitions. [2021-03-25 12:34:55,265 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3843537414965986 [2021-03-25 12:34:55,265 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 678 transitions. [2021-03-25 12:34:55,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 678 transitions. [2021-03-25 12:34:55,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:55,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 678 transitions. [2021-03-25 12:34:55,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:55,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:55,267 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:55,267 INFO L185 Difference]: Start difference. First operand has 202 places, 240 transitions, 9329 flow. Second operand 7 states and 678 transitions. [2021-03-25 12:34:55,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 247 transitions, 10101 flow [2021-03-25 12:34:55,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 247 transitions, 9735 flow, removed 162 selfloop flow, removed 5 redundant places. [2021-03-25 12:34:55,455 INFO L241 Difference]: Finished difference. Result has 205 places, 243 transitions, 9228 flow [2021-03-25 12:34:55,456 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=8963, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9228, PETRI_PLACES=205, PETRI_TRANSITIONS=243} [2021-03-25 12:34:55,456 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2021-03-25 12:34:55,456 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:55,456 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 243 transitions, 9228 flow [2021-03-25 12:34:55,456 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 243 transitions, 9228 flow [2021-03-25 12:34:55,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 243 transitions, 9228 flow [2021-03-25 12:34:55,549 INFO L129 PetriNetUnfolder]: 160/529 cut-off events. [2021-03-25 12:34:55,550 INFO L130 PetriNetUnfolder]: For 39440/39804 co-relation queries the response was YES. [2021-03-25 12:34:55,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7286 conditions, 529 events. 160/529 cut-off events. For 39440/39804 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4027 event pairs, 0 based on Foata normal form. 1/489 useless extension candidates. Maximal degree in co-relation 7197. Up to 174 conditions per place. [2021-03-25 12:34:55,558 INFO L142 LiptonReduction]: Number of co-enabled transitions 1274 [2021-03-25 12:34:55,628 INFO L154 LiptonReduction]: Checked pairs total: 222 [2021-03-25 12:34:55,629 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:34:55,629 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 173 [2021-03-25 12:34:55,629 INFO L480 AbstractCegarLoop]: Abstraction has has 205 places, 243 transitions, 9228 flow [2021-03-25 12:34:55,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:55,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:55,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:55,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:55,830 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:55,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1296101787, now seen corresponding path program 1 times [2021-03-25 12:34:55,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:55,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239261905] [2021-03-25 12:34:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:55,842 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:55,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:55,847 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 12:34:55,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:55,853 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:55,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:55,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239261905] [2021-03-25 12:34:55,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:34:55,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 12:34:55,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762580416] [2021-03-25 12:34:55,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 12:34:55,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:55,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 12:34:55,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 12:34:55,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 254 [2021-03-25 12:34:55,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 243 transitions, 9228 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:55,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:55,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 254 [2021-03-25 12:34:55,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:56,259 INFO L129 PetriNetUnfolder]: 162/537 cut-off events. [2021-03-25 12:34:56,259 INFO L130 PetriNetUnfolder]: For 42496/43963 co-relation queries the response was YES. [2021-03-25 12:34:56,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7716 conditions, 537 events. 162/537 cut-off events. For 42496/43963 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4090 event pairs, 0 based on Foata normal form. 19/515 useless extension candidates. Maximal degree in co-relation 7625. Up to 262 conditions per place. [2021-03-25 12:34:56,266 INFO L132 encePairwiseOnDemand]: 182/254 looper letters, 158 selfloop transitions, 79 changer transitions 0/247 dead transitions. [2021-03-25 12:34:56,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 247 transitions, 9879 flow [2021-03-25 12:34:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 12:34:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 12:34:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 578 transitions. [2021-03-25 12:34:56,267 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.45511811023622045 [2021-03-25 12:34:56,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 578 transitions. [2021-03-25 12:34:56,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 578 transitions. [2021-03-25 12:34:56,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:56,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 578 transitions. [2021-03-25 12:34:56,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:56,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:56,269 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:56,269 INFO L185 Difference]: Start difference. First operand has 205 places, 243 transitions, 9228 flow. Second operand 5 states and 578 transitions. [2021-03-25 12:34:56,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 247 transitions, 9879 flow [2021-03-25 12:34:56,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 247 transitions, 9726 flow, removed 50 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:56,396 INFO L241 Difference]: Finished difference. Result has 207 places, 247 transitions, 9506 flow [2021-03-25 12:34:56,396 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=9077, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9506, PETRI_PLACES=207, PETRI_TRANSITIONS=247} [2021-03-25 12:34:56,396 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2021-03-25 12:34:56,396 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:56,396 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 247 transitions, 9506 flow [2021-03-25 12:34:56,397 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 247 transitions, 9506 flow [2021-03-25 12:34:56,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 207 places, 247 transitions, 9506 flow [2021-03-25 12:34:56,469 INFO L129 PetriNetUnfolder]: 162/537 cut-off events. [2021-03-25 12:34:56,469 INFO L130 PetriNetUnfolder]: For 42094/42562 co-relation queries the response was YES. [2021-03-25 12:34:56,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 537 events. 162/537 cut-off events. For 42094/42562 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4122 event pairs, 0 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 7406. Up to 176 conditions per place. [2021-03-25 12:34:56,479 INFO L142 LiptonReduction]: Number of co-enabled transitions 1290 [2021-03-25 12:34:56,545 INFO L154 LiptonReduction]: Checked pairs total: 267 [2021-03-25 12:34:56,545 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:34:56,545 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 149 [2021-03-25 12:34:56,546 INFO L480 AbstractCegarLoop]: Abstraction has has 207 places, 247 transitions, 9508 flow [2021-03-25 12:34:56,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:56,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:56,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:56,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-25 12:34:56,546 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:56,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1223057583, now seen corresponding path program 1 times [2021-03-25 12:34:56,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:56,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104525690] [2021-03-25 12:34:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:56,559 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:56,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,563 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:34:56,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,569 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:34:56,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:56,577 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:34:56,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:56,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104525690] [2021-03-25 12:34:56,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930483525] [2021-03-25 12:34:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:56,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:56,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:56,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:56,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:56,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:56,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:56,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:56,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:56,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:56,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:34:56,684 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 12:34:56,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:56,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:56,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:56,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:56,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:56,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:56,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:56,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:34:56,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:56,701 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:34:56,701 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:34:56,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:56,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:56,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-25 12:34:56,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141380525] [2021-03-25 12:34:56,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 12:34:56,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:56,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 12:34:56,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 12:34:56,708 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 256 [2021-03-25 12:34:56,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 247 transitions, 9508 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:56,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:56,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 256 [2021-03-25 12:34:56,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:57,184 INFO L129 PetriNetUnfolder]: 164/545 cut-off events. [2021-03-25 12:34:57,184 INFO L130 PetriNetUnfolder]: For 45403/46625 co-relation queries the response was YES. [2021-03-25 12:34:57,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7931 conditions, 545 events. 164/545 cut-off events. For 45403/46625 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4175 event pairs, 0 based on Foata normal form. 36/539 useless extension candidates. Maximal degree in co-relation 7838. Up to 266 conditions per place. [2021-03-25 12:34:57,196 INFO L132 encePairwiseOnDemand]: 213/256 looper letters, 186 selfloop transitions, 57 changer transitions 0/253 dead transitions. [2021-03-25 12:34:57,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 253 transitions, 10259 flow [2021-03-25 12:34:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:34:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:34:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 686 transitions. [2021-03-25 12:34:57,197 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2021-03-25 12:34:57,198 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 686 transitions. [2021-03-25 12:34:57,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 686 transitions. [2021-03-25 12:34:57,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:57,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 686 transitions. [2021-03-25 12:34:57,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:57,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:57,203 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:57,203 INFO L185 Difference]: Start difference. First operand has 207 places, 247 transitions, 9508 flow. Second operand 7 states and 686 transitions. [2021-03-25 12:34:57,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 253 transitions, 10259 flow [2021-03-25 12:34:57,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 253 transitions, 10146 flow, removed 19 selfloop flow, removed 2 redundant places. [2021-03-25 12:34:57,369 INFO L241 Difference]: Finished difference. Result has 212 places, 248 transitions, 9615 flow [2021-03-25 12:34:57,369 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=9412, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9615, PETRI_PLACES=212, PETRI_TRANSITIONS=248} [2021-03-25 12:34:57,370 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2021-03-25 12:34:57,370 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:57,370 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 248 transitions, 9615 flow [2021-03-25 12:34:57,370 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 248 transitions, 9615 flow [2021-03-25 12:34:57,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 212 places, 248 transitions, 9615 flow [2021-03-25 12:34:57,445 INFO L129 PetriNetUnfolder]: 164/545 cut-off events. [2021-03-25 12:34:57,445 INFO L130 PetriNetUnfolder]: For 42412/42919 co-relation queries the response was YES. [2021-03-25 12:34:57,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7599 conditions, 545 events. 164/545 cut-off events. For 42412/42919 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4208 event pairs, 0 based on Foata normal form. 1/503 useless extension candidates. Maximal degree in co-relation 7507. Up to 180 conditions per place. [2021-03-25 12:34:57,458 INFO L142 LiptonReduction]: Number of co-enabled transitions 1296 [2021-03-25 12:34:57,509 INFO L154 LiptonReduction]: Checked pairs total: 113 [2021-03-25 12:34:57,509 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:34:57,510 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 140 [2021-03-25 12:34:57,510 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 248 transitions, 9615 flow [2021-03-25 12:34:57,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:57,510 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:57,510 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:57,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:57,713 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:57,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1286378110, now seen corresponding path program 1 times [2021-03-25 12:34:57,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:57,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077895019] [2021-03-25 12:34:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:57,727 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:57,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,732 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:34:57,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,737 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:34:57,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:57,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077895019] [2021-03-25 12:34:57,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419024471] [2021-03-25 12:34:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:57,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:34:57,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:57,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:57,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:57,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:57,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:57,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:34:57,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:57,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:57,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:57,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:57,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:34:57,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:34:57,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:57,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:34:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:57,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:57,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-03-25 12:34:57,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959663505] [2021-03-25 12:34:57,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 12:34:57,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:57,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 12:34:57,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-25 12:34:57,848 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 257 [2021-03-25 12:34:57,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 248 transitions, 9615 flow. Second operand has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:57,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:57,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 257 [2021-03-25 12:34:57,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:58,395 INFO L129 PetriNetUnfolder]: 165/549 cut-off events. [2021-03-25 12:34:58,395 INFO L130 PetriNetUnfolder]: For 44392/45614 co-relation queries the response was YES. [2021-03-25 12:34:58,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 549 events. 165/549 cut-off events. For 44392/45614 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4203 event pairs, 0 based on Foata normal form. 19/525 useless extension candidates. Maximal degree in co-relation 7876. Up to 295 conditions per place. [2021-03-25 12:34:58,402 INFO L132 encePairwiseOnDemand]: 220/257 looper letters, 200 selfloop transitions, 41 changer transitions 0/251 dead transitions. [2021-03-25 12:34:58,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 251 transitions, 10272 flow [2021-03-25 12:34:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 12:34:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 12:34:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2021-03-25 12:34:58,403 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4443579766536965 [2021-03-25 12:34:58,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2021-03-25 12:34:58,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2021-03-25 12:34:58,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:58,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2021-03-25 12:34:58,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 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) [2021-03-25 12:34:58,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:58,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:58,405 INFO L185 Difference]: Start difference. First operand has 212 places, 248 transitions, 9615 flow. Second operand 5 states and 571 transitions. [2021-03-25 12:34:58,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 251 transitions, 10272 flow [2021-03-25 12:34:58,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 251 transitions, 10189 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:58,537 INFO L241 Difference]: Finished difference. Result has 213 places, 251 transitions, 9810 flow [2021-03-25 12:34:58,538 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=9533, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9810, PETRI_PLACES=213, PETRI_TRANSITIONS=251} [2021-03-25 12:34:58,538 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2021-03-25 12:34:58,538 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:58,538 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 251 transitions, 9810 flow [2021-03-25 12:34:58,538 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 251 transitions, 9810 flow [2021-03-25 12:34:58,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 213 places, 251 transitions, 9810 flow [2021-03-25 12:34:58,599 INFO L129 PetriNetUnfolder]: 165/549 cut-off events. [2021-03-25 12:34:58,599 INFO L130 PetriNetUnfolder]: For 44968/45517 co-relation queries the response was YES. [2021-03-25 12:34:58,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7717 conditions, 549 events. 165/549 cut-off events. For 44968/45517 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4246 event pairs, 0 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 7624. Up to 182 conditions per place. [2021-03-25 12:34:58,608 INFO L142 LiptonReduction]: Number of co-enabled transitions 1310 [2021-03-25 12:34:58,747 INFO L154 LiptonReduction]: Checked pairs total: 345 [2021-03-25 12:34:58,747 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:34:58,748 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 210 [2021-03-25 12:34:58,748 INFO L480 AbstractCegarLoop]: Abstraction has has 213 places, 251 transitions, 9830 flow [2021-03-25 12:34:58,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:58,748 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:34:58,748 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:34:58,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:58,949 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:34:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:34:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1872615340, now seen corresponding path program 1 times [2021-03-25 12:34:58,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:34:58,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822735254] [2021-03-25 12:34:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:34:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:58,963 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:34:58,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:58,968 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 12:34:58,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:58,973 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 12:34:58,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:58,979 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:34:58,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:58,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822735254] [2021-03-25 12:34:58,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288707918] [2021-03-25 12:34:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:34:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:34:59,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:34:59,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:34:59,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:34:59,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:59,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:59,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:59,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:59,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:59,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:59,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:59,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:59,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:59,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:59,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:59,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:59,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:59,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:34:59,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:34:59,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:34:59,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:34:59,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:34:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:34:59,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:34:59,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:34:59,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746220783] [2021-03-25 12:34:59,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:34:59,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:34:59,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:34:59,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:34:59,121 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 261 [2021-03-25 12:34:59,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 251 transitions, 9830 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:59,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:34:59,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 261 [2021-03-25 12:34:59,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:34:59,685 INFO L129 PetriNetUnfolder]: 174/585 cut-off events. [2021-03-25 12:34:59,685 INFO L130 PetriNetUnfolder]: For 52243/53477 co-relation queries the response was YES. [2021-03-25 12:34:59,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 585 events. 174/585 cut-off events. For 52243/53477 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4443 event pairs, 0 based on Foata normal form. 72/614 useless extension candidates. Maximal degree in co-relation 8565. Up to 272 conditions per place. [2021-03-25 12:34:59,692 INFO L132 encePairwiseOnDemand]: 182/261 looper letters, 154 selfloop transitions, 98 changer transitions 0/262 dead transitions. [2021-03-25 12:34:59,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 262 transitions, 10934 flow [2021-03-25 12:34:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:34:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:34:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 937 transitions. [2021-03-25 12:34:59,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3988931460195828 [2021-03-25 12:34:59,693 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 937 transitions. [2021-03-25 12:34:59,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 937 transitions. [2021-03-25 12:34:59,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:34:59,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 937 transitions. [2021-03-25 12:34:59,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:59,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 261.0) internal successors, (2610), 10 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:59,695 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 261.0) internal successors, (2610), 10 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:34:59,695 INFO L185 Difference]: Start difference. First operand has 213 places, 251 transitions, 9830 flow. Second operand 9 states and 937 transitions. [2021-03-25 12:34:59,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 262 transitions, 10934 flow [2021-03-25 12:34:59,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 262 transitions, 10707 flow, removed 70 selfloop flow, removed 4 redundant places. [2021-03-25 12:34:59,835 INFO L241 Difference]: Finished difference. Result has 219 places, 262 transitions, 10490 flow [2021-03-25 12:34:59,835 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=9603, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10490, PETRI_PLACES=219, PETRI_TRANSITIONS=262} [2021-03-25 12:34:59,835 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2021-03-25 12:34:59,835 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:34:59,835 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 262 transitions, 10490 flow [2021-03-25 12:34:59,835 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 262 transitions, 10490 flow [2021-03-25 12:34:59,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 219 places, 262 transitions, 10490 flow [2021-03-25 12:34:59,906 INFO L129 PetriNetUnfolder]: 174/585 cut-off events. [2021-03-25 12:34:59,906 INFO L130 PetriNetUnfolder]: For 53747/54473 co-relation queries the response was YES. [2021-03-25 12:34:59,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8414 conditions, 585 events. 174/585 cut-off events. For 53747/54473 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4446 event pairs, 0 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 8320. Up to 195 conditions per place. [2021-03-25 12:34:59,916 INFO L142 LiptonReduction]: Number of co-enabled transitions 1354 [2021-03-25 12:35:00,073 INFO L154 LiptonReduction]: Checked pairs total: 730 [2021-03-25 12:35:00,073 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:35:00,073 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 238 [2021-03-25 12:35:00,074 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 262 transitions, 10496 flow [2021-03-25 12:35:00,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:00,074 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:00,074 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:00,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-03-25 12:35:00,274 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:00,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1286109991, now seen corresponding path program 1 times [2021-03-25 12:35:00,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:00,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123610533] [2021-03-25 12:35:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:00,290 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:00,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,297 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:00,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,303 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:00,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:00,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123610533] [2021-03-25 12:35:00,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123710594] [2021-03-25 12:35:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:00,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:35:00,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:00,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:00,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:00,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:00,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:00,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:00,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:00,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:00,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:00,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:00,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:00,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:00,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:00,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:00,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:00,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-03-25 12:35:00,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33413877] [2021-03-25 12:35:00,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 12:35:00,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:00,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 12:35:00,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-25 12:35:00,416 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 266 [2021-03-25 12:35:00,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 262 transitions, 10496 flow. Second operand has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:00,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:00,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 266 [2021-03-25 12:35:00,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:00,828 INFO L129 PetriNetUnfolder]: 175/589 cut-off events. [2021-03-25 12:35:00,828 INFO L130 PetriNetUnfolder]: For 54402/55698 co-relation queries the response was YES. [2021-03-25 12:35:00,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8814 conditions, 589 events. 175/589 cut-off events. For 54402/55698 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4494 event pairs, 0 based on Foata normal form. 20/565 useless extension candidates. Maximal degree in co-relation 8718. Up to 314 conditions per place. [2021-03-25 12:35:00,836 INFO L132 encePairwiseOnDemand]: 227/266 looper letters, 211 selfloop transitions, 44 changer transitions 0/265 dead transitions. [2021-03-25 12:35:00,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 265 transitions, 11142 flow [2021-03-25 12:35:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 12:35:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 12:35:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2021-03-25 12:35:00,837 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.43609022556390975 [2021-03-25 12:35:00,837 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2021-03-25 12:35:00,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2021-03-25 12:35:00,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:00,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2021-03-25 12:35:00,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:00,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:00,838 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:00,838 INFO L185 Difference]: Start difference. First operand has 219 places, 262 transitions, 10496 flow. Second operand 5 states and 580 transitions. [2021-03-25 12:35:00,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 265 transitions, 11142 flow [2021-03-25 12:35:00,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 265 transitions, 11024 flow, removed 45 selfloop flow, removed 3 redundant places. [2021-03-25 12:35:00,983 INFO L241 Difference]: Finished difference. Result has 221 places, 265 transitions, 10622 flow [2021-03-25 12:35:00,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=10378, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10622, PETRI_PLACES=221, PETRI_TRANSITIONS=265} [2021-03-25 12:35:00,983 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2021-03-25 12:35:00,983 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:00,983 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 265 transitions, 10622 flow [2021-03-25 12:35:00,983 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 265 transitions, 10622 flow [2021-03-25 12:35:00,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 265 transitions, 10622 flow [2021-03-25 12:35:01,052 INFO L129 PetriNetUnfolder]: 175/589 cut-off events. [2021-03-25 12:35:01,052 INFO L130 PetriNetUnfolder]: For 51439/52043 co-relation queries the response was YES. [2021-03-25 12:35:01,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8449 conditions, 589 events. 175/589 cut-off events. For 51439/52043 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4536 event pairs, 0 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 8353. Up to 197 conditions per place. [2021-03-25 12:35:01,061 INFO L142 LiptonReduction]: Number of co-enabled transitions 1368 [2021-03-25 12:35:01,175 INFO L154 LiptonReduction]: Checked pairs total: 619 [2021-03-25 12:35:01,175 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:35:01,175 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 192 [2021-03-25 12:35:01,175 INFO L480 AbstractCegarLoop]: Abstraction has has 221 places, 265 transitions, 10628 flow [2021-03-25 12:35:01,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:01,175 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:01,176 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:01,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-03-25 12:35:01,377 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:01,377 INFO L82 PathProgramCache]: Analyzing trace with hash 19713014, now seen corresponding path program 1 times [2021-03-25 12:35:01,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:01,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093762636] [2021-03-25 12:35:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:01,389 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:01,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,394 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:35:01,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,400 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:35:01,400 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:35:01,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:01,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:01,430 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:01,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:01,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093762636] [2021-03-25 12:35:01,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724466861] [2021-03-25 12:35:01,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:01,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:01,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:01,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:01,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:01,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:01,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:01,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:01,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:01,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:01,541 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 12:35:01,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:35:01,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:35:01,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:01,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:01,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:01,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:01,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:01,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:01,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:01,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:01,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:01,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,572 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:01,573 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:01,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:01,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:01,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:35:01,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:01,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:01,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:35:01,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:35:01,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:35:01,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:01,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:01,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 12:35:01,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:01,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:35:01,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:35:01,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:01,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:01,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:01,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:01,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-25 12:35:01,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6970849] [2021-03-25 12:35:01,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 12:35:01,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:01,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 12:35:01,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-03-25 12:35:01,631 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 270 [2021-03-25 12:35:01,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 265 transitions, 10628 flow. Second operand has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:01,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:01,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 270 [2021-03-25 12:35:01,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:02,541 INFO L129 PetriNetUnfolder]: 182/620 cut-off events. [2021-03-25 12:35:02,541 INFO L130 PetriNetUnfolder]: For 57455/58754 co-relation queries the response was YES. [2021-03-25 12:35:02,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9256 conditions, 620 events. 182/620 cut-off events. For 57455/58754 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4833 event pairs, 0 based on Foata normal form. 38/608 useless extension candidates. Maximal degree in co-relation 9158. Up to 210 conditions per place. [2021-03-25 12:35:02,550 INFO L132 encePairwiseOnDemand]: 185/270 looper letters, 123 selfloop transitions, 147 changer transitions 0/280 dead transitions. [2021-03-25 12:35:02,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 280 transitions, 11915 flow [2021-03-25 12:35:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 12:35:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 12:35:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1262 transitions. [2021-03-25 12:35:02,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33386243386243386 [2021-03-25 12:35:02,551 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1262 transitions. [2021-03-25 12:35:02,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1262 transitions. [2021-03-25 12:35:02,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:02,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1262 transitions. [2021-03-25 12:35:02,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 90.14285714285714) internal successors, (1262), 14 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:02,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 270.0) internal successors, (4050), 15 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:02,555 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 270.0) internal successors, (4050), 15 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:02,555 INFO L185 Difference]: Start difference. First operand has 221 places, 265 transitions, 10628 flow. Second operand 14 states and 1262 transitions. [2021-03-25 12:35:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 280 transitions, 11915 flow [2021-03-25 12:35:02,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 280 transitions, 11754 flow, removed 54 selfloop flow, removed 2 redundant places. [2021-03-25 12:35:02,753 INFO L241 Difference]: Finished difference. Result has 235 places, 275 transitions, 11387 flow [2021-03-25 12:35:02,754 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=10467, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11387, PETRI_PLACES=235, PETRI_TRANSITIONS=275} [2021-03-25 12:35:02,754 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2021-03-25 12:35:02,754 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:02,754 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 275 transitions, 11387 flow [2021-03-25 12:35:02,754 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 275 transitions, 11387 flow [2021-03-25 12:35:02,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 235 places, 275 transitions, 11387 flow [2021-03-25 12:35:02,844 INFO L129 PetriNetUnfolder]: 182/620 cut-off events. [2021-03-25 12:35:02,845 INFO L130 PetriNetUnfolder]: For 59259/60236 co-relation queries the response was YES. [2021-03-25 12:35:02,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9121 conditions, 620 events. 182/620 cut-off events. For 59259/60236 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4912 event pairs, 0 based on Foata normal form. 2/572 useless extension candidates. Maximal degree in co-relation 9022. Up to 208 conditions per place. [2021-03-25 12:35:02,856 INFO L142 LiptonReduction]: Number of co-enabled transitions 1410 [2021-03-25 12:35:03,016 INFO L154 LiptonReduction]: Checked pairs total: 301 [2021-03-25 12:35:03,016 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:35:03,016 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 262 [2021-03-25 12:35:03,016 INFO L480 AbstractCegarLoop]: Abstraction has has 235 places, 275 transitions, 11399 flow [2021-03-25 12:35:03,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:03,017 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:03,017 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:03,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-03-25 12:35:03,217 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:03,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:03,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1286059678, now seen corresponding path program 1 times [2021-03-25 12:35:03,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:03,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464412100] [2021-03-25 12:35:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:03,228 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:03,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:03,237 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:03,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:03,243 INFO L142 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size [2021-03-25 12:35:03,244 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:35:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:03,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464412100] [2021-03-25 12:35:03,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:35:03,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 12:35:03,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653543896] [2021-03-25 12:35:03,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 12:35:03,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:03,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 12:35:03,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 12:35:03,255 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 274 [2021-03-25 12:35:03,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 275 transitions, 11399 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:03,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:03,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 274 [2021-03-25 12:35:03,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:03,729 INFO L129 PetriNetUnfolder]: 185/632 cut-off events. [2021-03-25 12:35:03,729 INFO L130 PetriNetUnfolder]: For 63075/64576 co-relation queries the response was YES. [2021-03-25 12:35:03,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9689 conditions, 632 events. 185/632 cut-off events. For 63075/64576 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4983 event pairs, 0 based on Foata normal form. 18/600 useless extension candidates. Maximal degree in co-relation 9588. Up to 298 conditions per place. [2021-03-25 12:35:03,736 INFO L132 encePairwiseOnDemand]: 187/274 looper letters, 173 selfloop transitions, 97 changer transitions 0/280 dead transitions. [2021-03-25 12:35:03,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 280 transitions, 12212 flow [2021-03-25 12:35:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 12:35:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 12:35:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2021-03-25 12:35:03,738 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.43795620437956206 [2021-03-25 12:35:03,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2021-03-25 12:35:03,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2021-03-25 12:35:03,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:03,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2021-03-25 12:35:03,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:03,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:03,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:03,740 INFO L185 Difference]: Start difference. First operand has 235 places, 275 transitions, 11399 flow. Second operand 5 states and 600 transitions. [2021-03-25 12:35:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 280 transitions, 12212 flow [2021-03-25 12:35:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 280 transitions, 11663 flow, removed 194 selfloop flow, removed 8 redundant places. [2021-03-25 12:35:03,940 INFO L241 Difference]: Finished difference. Result has 232 places, 280 transitions, 11417 flow [2021-03-25 12:35:03,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=10850, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11417, PETRI_PLACES=232, PETRI_TRANSITIONS=280} [2021-03-25 12:35:03,940 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2021-03-25 12:35:03,940 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:03,940 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 280 transitions, 11417 flow [2021-03-25 12:35:03,941 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 280 transitions, 11417 flow [2021-03-25 12:35:03,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 232 places, 280 transitions, 11417 flow [2021-03-25 12:35:04,059 INFO L129 PetriNetUnfolder]: 185/632 cut-off events. [2021-03-25 12:35:04,059 INFO L130 PetriNetUnfolder]: For 62877/63828 co-relation queries the response was YES. [2021-03-25 12:35:04,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9240 conditions, 632 events. 185/632 cut-off events. For 62877/63828 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5074 event pairs, 0 based on Foata normal form. 2/583 useless extension candidates. Maximal degree in co-relation 9139. Up to 207 conditions per place. [2021-03-25 12:35:04,076 INFO L142 LiptonReduction]: Number of co-enabled transitions 1430 [2021-03-25 12:35:04,196 INFO L154 LiptonReduction]: Checked pairs total: 656 [2021-03-25 12:35:04,197 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:35:04,197 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 257 [2021-03-25 12:35:04,197 INFO L480 AbstractCegarLoop]: Abstraction has has 232 places, 280 transitions, 11423 flow [2021-03-25 12:35:04,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:04,197 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:04,197 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:04,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-25 12:35:04,197 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:04,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1208353160, now seen corresponding path program 1 times [2021-03-25 12:35:04,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:04,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425490036] [2021-03-25 12:35:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:04,209 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:04,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,213 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:04,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,219 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:04,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,225 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:04,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:04,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425490036] [2021-03-25 12:35:04,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639192055] [2021-03-25 12:35:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:04,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:04,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:04,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:04,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:04,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:04,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:04,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:04,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:04,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:04,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:04,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:04,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:04,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:04,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:04,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:04,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:04,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:04,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:04,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:04,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:04,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:04,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:04,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:35:04,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693314018] [2021-03-25 12:35:04,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:35:04,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:04,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:35:04,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:35:04,400 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 278 [2021-03-25 12:35:04,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 280 transitions, 11423 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:04,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:04,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 278 [2021-03-25 12:35:04,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:05,000 INFO L129 PetriNetUnfolder]: 189/645 cut-off events. [2021-03-25 12:35:05,001 INFO L130 PetriNetUnfolder]: For 66075/67602 co-relation queries the response was YES. [2021-03-25 12:35:05,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 645 events. 189/645 cut-off events. For 66075/67602 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5093 event pairs, 0 based on Foata normal form. 22/614 useless extension candidates. Maximal degree in co-relation 9758. Up to 334 conditions per place. [2021-03-25 12:35:05,014 INFO L132 encePairwiseOnDemand]: 232/278 looper letters, 224 selfloop transitions, 50 changer transitions 0/284 dead transitions. [2021-03-25 12:35:05,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 284 transitions, 12272 flow [2021-03-25 12:35:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 12:35:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 12:35:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2021-03-25 12:35:05,016 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4064748201438849 [2021-03-25 12:35:05,017 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 678 transitions. [2021-03-25 12:35:05,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 678 transitions. [2021-03-25 12:35:05,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:05,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 678 transitions. [2021-03-25 12:35:05,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:05,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:05,019 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:05,019 INFO L185 Difference]: Start difference. First operand has 232 places, 280 transitions, 11423 flow. Second operand 6 states and 678 transitions. [2021-03-25 12:35:05,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 284 transitions, 12272 flow [2021-03-25 12:35:05,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 284 transitions, 12129 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-25 12:35:05,224 INFO L241 Difference]: Finished difference. Result has 235 places, 283 transitions, 11625 flow [2021-03-25 12:35:05,225 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=11295, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11625, PETRI_PLACES=235, PETRI_TRANSITIONS=283} [2021-03-25 12:35:05,225 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2021-03-25 12:35:05,225 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:05,225 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 283 transitions, 11625 flow [2021-03-25 12:35:05,225 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 283 transitions, 11625 flow [2021-03-25 12:35:05,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 235 places, 283 transitions, 11625 flow [2021-03-25 12:35:05,312 INFO L129 PetriNetUnfolder]: 189/643 cut-off events. [2021-03-25 12:35:05,312 INFO L130 PetriNetUnfolder]: For 65124/66072 co-relation queries the response was YES. [2021-03-25 12:35:05,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9518 conditions, 643 events. 189/643 cut-off events. For 65124/66072 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5175 event pairs, 0 based on Foata normal form. 1/591 useless extension candidates. Maximal degree in co-relation 9416. Up to 213 conditions per place. [2021-03-25 12:35:05,330 INFO L142 LiptonReduction]: Number of co-enabled transitions 1444 [2021-03-25 12:35:05,420 INFO L154 LiptonReduction]: Checked pairs total: 303 [2021-03-25 12:35:05,420 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:35:05,420 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 195 [2021-03-25 12:35:05,420 INFO L480 AbstractCegarLoop]: Abstraction has has 235 places, 283 transitions, 11627 flow [2021-03-25 12:35:05,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:05,421 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:05,421 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:05,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-03-25 12:35:05,623 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:05,623 INFO L82 PathProgramCache]: Analyzing trace with hash -236630936, now seen corresponding path program 1 times [2021-03-25 12:35:05,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:05,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841046590] [2021-03-25 12:35:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:05,640 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:05,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,645 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:35:05,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,651 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 12:35:05,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:05,658 INFO L142 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size [2021-03-25 12:35:05,658 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:35:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:05,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841046590] [2021-03-25 12:35:05,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472322503] [2021-03-25 12:35:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:05,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:05,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:05,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:05,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:05,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:05,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:05,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:05,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:05,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:05,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:05,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:05,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:05,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:05,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,762 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 12:35:05,762 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 12:35:05,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:05,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:05,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:05,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:05,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:05,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:05,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:35:05,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:05,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:05,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:35:05,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:05,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:05,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:05,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:05,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:35:05,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089138117] [2021-03-25 12:35:05,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:35:05,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:05,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:35:05,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:35:05,800 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 280 [2021-03-25 12:35:05,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 283 transitions, 11627 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:05,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:05,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 280 [2021-03-25 12:35:05,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:06,640 INFO L129 PetriNetUnfolder]: 220/764 cut-off events. [2021-03-25 12:35:06,640 INFO L130 PetriNetUnfolder]: For 94907/96439 co-relation queries the response was YES. [2021-03-25 12:35:06,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12168 conditions, 764 events. 220/764 cut-off events. For 94907/96439 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6245 event pairs, 0 based on Foata normal form. 25/729 useless extension candidates. Maximal degree in co-relation 12064. Up to 272 conditions per place. [2021-03-25 12:35:06,653 INFO L132 encePairwiseOnDemand]: 128/280 looper letters, 84 selfloop transitions, 220 changer transitions 0/314 dead transitions. [2021-03-25 12:35:06,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 314 transitions, 13955 flow [2021-03-25 12:35:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:35:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:35:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 992 transitions. [2021-03-25 12:35:06,655 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.39365079365079364 [2021-03-25 12:35:06,655 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 992 transitions. [2021-03-25 12:35:06,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 992 transitions. [2021-03-25 12:35:06,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:06,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 992 transitions. [2021-03-25 12:35:06,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.22222222222223) internal successors, (992), 9 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:06,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:06,658 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:06,658 INFO L185 Difference]: Start difference. First operand has 235 places, 283 transitions, 11627 flow. Second operand 9 states and 992 transitions. [2021-03-25 12:35:06,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 314 transitions, 13955 flow [2021-03-25 12:35:06,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 314 transitions, 13613 flow, removed 131 selfloop flow, removed 3 redundant places. [2021-03-25 12:35:06,954 INFO L241 Difference]: Finished difference. Result has 242 places, 313 transitions, 13592 flow [2021-03-25 12:35:06,954 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=11367, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13592, PETRI_PLACES=242, PETRI_TRANSITIONS=313} [2021-03-25 12:35:06,954 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2021-03-25 12:35:06,954 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:06,955 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 313 transitions, 13592 flow [2021-03-25 12:35:06,955 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 313 transitions, 13592 flow [2021-03-25 12:35:06,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 242 places, 313 transitions, 13592 flow [2021-03-25 12:35:07,120 INFO L129 PetriNetUnfolder]: 220/764 cut-off events. [2021-03-25 12:35:07,121 INFO L130 PetriNetUnfolder]: For 94025/95315 co-relation queries the response was YES. [2021-03-25 12:35:07,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11931 conditions, 764 events. 220/764 cut-off events. For 94025/95315 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6271 event pairs, 0 based on Foata normal form. 4/706 useless extension candidates. Maximal degree in co-relation 11827. Up to 260 conditions per place. [2021-03-25 12:35:07,136 INFO L142 LiptonReduction]: Number of co-enabled transitions 1574 [2021-03-25 12:35:07,549 INFO L154 LiptonReduction]: Checked pairs total: 3930 [2021-03-25 12:35:07,549 INFO L156 LiptonReduction]: Total number of compositions: 20 [2021-03-25 12:35:07,549 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 595 [2021-03-25 12:35:07,549 INFO L480 AbstractCegarLoop]: Abstraction has has 242 places, 313 transitions, 13628 flow [2021-03-25 12:35:07,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:07,550 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:07,550 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:07,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-03-25 12:35:07,750 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:07,751 INFO L82 PathProgramCache]: Analyzing trace with hash -108724758, now seen corresponding path program 1 times [2021-03-25 12:35:07,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:07,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674394621] [2021-03-25 12:35:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:07,777 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:07,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,796 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:35:07,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:07,803 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:07,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:07,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:07,820 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:07,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:07,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674394621] [2021-03-25 12:35:07,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17703412] [2021-03-25 12:35:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:07,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:07,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:07,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:07,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:07,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:07,912 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:35:07,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:07,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:07,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:07,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:07,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:07,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:07,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:07,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:07,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:07,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:07,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:07,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:07,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:07,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:07,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:07,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:07,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:07,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:07,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:07,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:07,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:07,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:07,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:07,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:07,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,948 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:07,948 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:07,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:07,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:07,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:07,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:07,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:07,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:07,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:07,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:07,973 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:07,975 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:07,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:07,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:07,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 12:35:07,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991218747] [2021-03-25 12:35:07,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 12:35:07,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:07,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 12:35:07,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-03-25 12:35:07,982 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 300 [2021-03-25 12:35:07,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 313 transitions, 13628 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:07,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:07,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 300 [2021-03-25 12:35:07,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:08,735 INFO L129 PetriNetUnfolder]: 227/792 cut-off events. [2021-03-25 12:35:08,735 INFO L130 PetriNetUnfolder]: For 102041/103889 co-relation queries the response was YES. [2021-03-25 12:35:08,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12840 conditions, 792 events. 227/792 cut-off events. For 102041/103889 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6605 event pairs, 1 based on Foata normal form. 42/772 useless extension candidates. Maximal degree in co-relation 12734. Up to 391 conditions per place. [2021-03-25 12:35:08,747 INFO L132 encePairwiseOnDemand]: 259/300 looper letters, 261 selfloop transitions, 58 changer transitions 0/329 dead transitions. [2021-03-25 12:35:08,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 329 transitions, 15074 flow [2021-03-25 12:35:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 12:35:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 12:35:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 813 transitions. [2021-03-25 12:35:08,748 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33875 [2021-03-25 12:35:08,748 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 813 transitions. [2021-03-25 12:35:08,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 813 transitions. [2021-03-25 12:35:08,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:08,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 813 transitions. [2021-03-25 12:35:08,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.625) internal successors, (813), 8 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:08,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:08,751 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:08,751 INFO L185 Difference]: Start difference. First operand has 242 places, 313 transitions, 13628 flow. Second operand 8 states and 813 transitions. [2021-03-25 12:35:08,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 329 transitions, 15074 flow [2021-03-25 12:35:09,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 329 transitions, 14618 flow, removed 95 selfloop flow, removed 8 redundant places. [2021-03-25 12:35:09,018 INFO L241 Difference]: Finished difference. Result has 243 places, 323 transitions, 13889 flow [2021-03-25 12:35:09,018 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=13193, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13889, PETRI_PLACES=243, PETRI_TRANSITIONS=323} [2021-03-25 12:35:09,018 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2021-03-25 12:35:09,018 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:09,018 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 323 transitions, 13889 flow [2021-03-25 12:35:09,019 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 323 transitions, 13889 flow [2021-03-25 12:35:09,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 243 places, 323 transitions, 13889 flow [2021-03-25 12:35:09,143 INFO L129 PetriNetUnfolder]: 227/792 cut-off events. [2021-03-25 12:35:09,144 INFO L130 PetriNetUnfolder]: For 88576/89522 co-relation queries the response was YES. [2021-03-25 12:35:09,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11965 conditions, 792 events. 227/792 cut-off events. For 88576/89522 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6702 event pairs, 0 based on Foata normal form. 4/734 useless extension candidates. Maximal degree in co-relation 11862. Up to 266 conditions per place. [2021-03-25 12:35:09,162 INFO L142 LiptonReduction]: Number of co-enabled transitions 1616 [2021-03-25 12:35:09,302 INFO L154 LiptonReduction]: Checked pairs total: 607 [2021-03-25 12:35:09,303 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:35:09,303 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 285 [2021-03-25 12:35:09,303 INFO L480 AbstractCegarLoop]: Abstraction has has 243 places, 323 transitions, 13891 flow [2021-03-25 12:35:09,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:09,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:09,303 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:09,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:09,516 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:09,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1784308438, now seen corresponding path program 1 times [2021-03-25 12:35:09,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:09,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089992699] [2021-03-25 12:35:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:09,527 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:09,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,532 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 12:35:09,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:09,538 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-03-25 12:35:09,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:09,551 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:09,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:09,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089992699] [2021-03-25 12:35:09,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108359965] [2021-03-25 12:35:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:09,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:09,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:09,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:09,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:09,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:09,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:09,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:09,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:09,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:09,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:09,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:09,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:09,644 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 12:35:09,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:09,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:09,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:09,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:09,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:09,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:09,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:09,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:09,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:09,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:09,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:09,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:09,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:09,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:09,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:09,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:09,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 12:35:09,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067108169] [2021-03-25 12:35:09,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 12:35:09,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:09,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 12:35:09,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-25 12:35:09,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 304 [2021-03-25 12:35:09,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 323 transitions, 13891 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:09,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:09,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 304 [2021-03-25 12:35:09,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:10,466 INFO L129 PetriNetUnfolder]: 227/797 cut-off events. [2021-03-25 12:35:10,466 INFO L130 PetriNetUnfolder]: For 90043/91592 co-relation queries the response was YES. [2021-03-25 12:35:10,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12468 conditions, 797 events. 227/797 cut-off events. For 90043/91592 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6675 event pairs, 0 based on Foata normal form. 42/775 useless extension candidates. Maximal degree in co-relation 12363. Up to 386 conditions per place. [2021-03-25 12:35:10,478 INFO L132 encePairwiseOnDemand]: 258/304 looper letters, 256 selfloop transitions, 65 changer transitions 0/331 dead transitions. [2021-03-25 12:35:10,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 331 transitions, 14952 flow [2021-03-25 12:35:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 12:35:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 12:35:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 968 transitions. [2021-03-25 12:35:10,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.31842105263157894 [2021-03-25 12:35:10,481 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 968 transitions. [2021-03-25 12:35:10,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 968 transitions. [2021-03-25 12:35:10,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:10,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 968 transitions. [2021-03-25 12:35:10,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.8) internal successors, (968), 10 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:10,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:10,484 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:10,484 INFO L185 Difference]: Start difference. First operand has 243 places, 323 transitions, 13891 flow. Second operand 10 states and 968 transitions. [2021-03-25 12:35:10,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 331 transitions, 14952 flow [2021-03-25 12:35:10,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 331 transitions, 14822 flow, removed 31 selfloop flow, removed 4 redundant places. [2021-03-25 12:35:10,759 INFO L241 Difference]: Finished difference. Result has 250 places, 326 transitions, 14124 flow [2021-03-25 12:35:10,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=13762, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14124, PETRI_PLACES=250, PETRI_TRANSITIONS=326} [2021-03-25 12:35:10,760 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2021-03-25 12:35:10,760 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:10,760 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 326 transitions, 14124 flow [2021-03-25 12:35:10,760 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 326 transitions, 14124 flow [2021-03-25 12:35:10,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 250 places, 326 transitions, 14124 flow [2021-03-25 12:35:10,897 INFO L129 PetriNetUnfolder]: 227/797 cut-off events. [2021-03-25 12:35:10,897 INFO L130 PetriNetUnfolder]: For 87503/88436 co-relation queries the response was YES. [2021-03-25 12:35:10,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12056 conditions, 797 events. 227/797 cut-off events. For 87503/88436 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6758 event pairs, 0 based on Foata normal form. 3/736 useless extension candidates. Maximal degree in co-relation 11951. Up to 270 conditions per place. [2021-03-25 12:35:10,937 INFO L142 LiptonReduction]: Number of co-enabled transitions 1628 [2021-03-25 12:35:11,007 INFO L154 LiptonReduction]: Checked pairs total: 133 [2021-03-25 12:35:11,007 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:35:11,007 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 247 [2021-03-25 12:35:11,008 INFO L480 AbstractCegarLoop]: Abstraction has has 250 places, 326 transitions, 14124 flow [2021-03-25 12:35:11,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:11,008 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:11,008 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:11,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-03-25 12:35:11,209 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:11,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2070659693, now seen corresponding path program 1 times [2021-03-25 12:35:11,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:11,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637943826] [2021-03-25 12:35:11,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:11,226 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:11,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,230 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:11,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:11,236 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 12:35:11,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:11,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:11,250 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:11,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:11,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637943826] [2021-03-25 12:35:11,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708499045] [2021-03-25 12:35:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:11,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:11,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:11,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:11,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:11,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:11,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:11,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:11,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:11,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:11,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:11,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:11,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:11,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:11,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:11,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:11,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:11,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:11,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,364 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 12:35:11,365 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 12:35:11,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:11,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:11,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:11,377 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-25 12:35:11,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:35:11,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:35:11,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:11,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:11,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:11,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:11,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:11,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:11,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:11,402 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:11,402 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:11,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:11,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:11,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 12:35:11,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104887525] [2021-03-25 12:35:11,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 12:35:11,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:11,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 12:35:11,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 12:35:11,409 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 305 [2021-03-25 12:35:11,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 326 transitions, 14124 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:11,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:11,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 305 [2021-03-25 12:35:11,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:12,094 INFO L129 PetriNetUnfolder]: 230/809 cut-off events. [2021-03-25 12:35:12,095 INFO L130 PetriNetUnfolder]: For 91428/92978 co-relation queries the response was YES. [2021-03-25 12:35:12,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12684 conditions, 809 events. 230/809 cut-off events. For 91428/92978 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6822 event pairs, 0 based on Foata normal form. 80/822 useless extension candidates. Maximal degree in co-relation 12577. Up to 328 conditions per place. [2021-03-25 12:35:12,107 INFO L132 encePairwiseOnDemand]: 222/305 looper letters, 190 selfloop transitions, 135 changer transitions 0/335 dead transitions. [2021-03-25 12:35:12,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 335 transitions, 15234 flow [2021-03-25 12:35:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 12:35:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 12:35:12,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1132 transitions. [2021-03-25 12:35:12,109 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3092896174863388 [2021-03-25 12:35:12,109 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1132 transitions. [2021-03-25 12:35:12,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1132 transitions. [2021-03-25 12:35:12,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:12,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1132 transitions. [2021-03-25 12:35:12,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.33333333333333) internal successors, (1132), 12 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:12,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:12,112 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:12,112 INFO L185 Difference]: Start difference. First operand has 250 places, 326 transitions, 14124 flow. Second operand 12 states and 1132 transitions. [2021-03-25 12:35:12,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 335 transitions, 15234 flow [2021-03-25 12:35:12,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 335 transitions, 15152 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-03-25 12:35:12,354 INFO L241 Difference]: Finished difference. Result has 255 places, 329 transitions, 14587 flow [2021-03-25 12:35:12,355 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=14042, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14587, PETRI_PLACES=255, PETRI_TRANSITIONS=329} [2021-03-25 12:35:12,355 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2021-03-25 12:35:12,355 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:12,355 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 329 transitions, 14587 flow [2021-03-25 12:35:12,355 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 329 transitions, 14587 flow [2021-03-25 12:35:12,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 255 places, 329 transitions, 14587 flow [2021-03-25 12:35:12,472 INFO L129 PetriNetUnfolder]: 230/809 cut-off events. [2021-03-25 12:35:12,472 INFO L130 PetriNetUnfolder]: For 91113/92070 co-relation queries the response was YES. [2021-03-25 12:35:12,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12402 conditions, 809 events. 230/809 cut-off events. For 91113/92070 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6896 event pairs, 0 based on Foata normal form. 8/751 useless extension candidates. Maximal degree in co-relation 12297. Up to 274 conditions per place. [2021-03-25 12:35:12,493 INFO L142 LiptonReduction]: Number of co-enabled transitions 1642 [2021-03-25 12:35:12,594 INFO L154 LiptonReduction]: Checked pairs total: 266 [2021-03-25 12:35:12,595 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:35:12,595 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 240 [2021-03-25 12:35:12,595 INFO L480 AbstractCegarLoop]: Abstraction has has 255 places, 329 transitions, 14587 flow [2021-03-25 12:35:12,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:12,595 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:12,595 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:12,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:12,804 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:12,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1326862440, now seen corresponding path program 1 times [2021-03-25 12:35:12,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:12,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221321784] [2021-03-25 12:35:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:12,816 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:12,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,820 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 12:35:12,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,826 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 12:35:12,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,833 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:35:12,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:12,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221321784] [2021-03-25 12:35:12,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060026108] [2021-03-25 12:35:12,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:12,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:12,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:12,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:12,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:12,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:12,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:12,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:12,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:12,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:12,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:12,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:12,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:12,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:12,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:12,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:12,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:12,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:12,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:12,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:12,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:12,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:12,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:12,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:35:12,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402291773] [2021-03-25 12:35:12,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:35:12,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:12,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:35:12,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:35:12,977 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 307 [2021-03-25 12:35:12,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 329 transitions, 14587 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:12,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:12,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 307 [2021-03-25 12:35:12,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:13,746 INFO L129 PetriNetUnfolder]: 239/845 cut-off events. [2021-03-25 12:35:13,746 INFO L130 PetriNetUnfolder]: For 98853/100415 co-relation queries the response was YES. [2021-03-25 12:35:13,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13544 conditions, 845 events. 239/845 cut-off events. For 98853/100415 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7192 event pairs, 0 based on Foata normal form. 80/856 useless extension candidates. Maximal degree in co-relation 13437. Up to 381 conditions per place. [2021-03-25 12:35:13,759 INFO L132 encePairwiseOnDemand]: 193/307 looper letters, 192 selfloop transitions, 141 changer transitions 0/343 dead transitions. [2021-03-25 12:35:13,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 343 transitions, 16215 flow [2021-03-25 12:35:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:35:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:35:13,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 994 transitions. [2021-03-25 12:35:13,761 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3597538906985161 [2021-03-25 12:35:13,761 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 994 transitions. [2021-03-25 12:35:13,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 994 transitions. [2021-03-25 12:35:13,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:13,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 994 transitions. [2021-03-25 12:35:13,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.44444444444444) internal successors, (994), 9 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) [2021-03-25 12:35:13,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:13,763 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:13,763 INFO L185 Difference]: Start difference. First operand has 255 places, 329 transitions, 14587 flow. Second operand 9 states and 994 transitions. [2021-03-25 12:35:13,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 343 transitions, 16215 flow [2021-03-25 12:35:14,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 343 transitions, 15925 flow, removed 41 selfloop flow, removed 7 redundant places. [2021-03-25 12:35:14,040 INFO L241 Difference]: Finished difference. Result has 258 places, 343 transitions, 15693 flow [2021-03-25 12:35:14,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=14303, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15693, PETRI_PLACES=258, PETRI_TRANSITIONS=343} [2021-03-25 12:35:14,040 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2021-03-25 12:35:14,041 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:14,041 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 343 transitions, 15693 flow [2021-03-25 12:35:14,041 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 343 transitions, 15693 flow [2021-03-25 12:35:14,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 258 places, 343 transitions, 15693 flow [2021-03-25 12:35:14,205 INFO L129 PetriNetUnfolder]: 239/845 cut-off events. [2021-03-25 12:35:14,206 INFO L130 PetriNetUnfolder]: For 106188/107219 co-relation queries the response was YES. [2021-03-25 12:35:14,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13268 conditions, 845 events. 239/845 cut-off events. For 106188/107219 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7258 event pairs, 0 based on Foata normal form. 11/787 useless extension candidates. Maximal degree in co-relation 13161. Up to 292 conditions per place. [2021-03-25 12:35:14,225 INFO L142 LiptonReduction]: Number of co-enabled transitions 1698 [2021-03-25 12:35:14,362 INFO L154 LiptonReduction]: Checked pairs total: 501 [2021-03-25 12:35:14,362 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:35:14,362 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 321 [2021-03-25 12:35:14,362 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 343 transitions, 15695 flow [2021-03-25 12:35:14,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:14,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:14,363 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:14,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-03-25 12:35:14,563 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:14,563 INFO L82 PathProgramCache]: Analyzing trace with hash 753090644, now seen corresponding path program 1 times [2021-03-25 12:35:14,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:14,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118818406] [2021-03-25 12:35:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:14,581 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:14,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,586 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:14,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:14,592 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:14,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:14,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:14,606 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:14,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:14,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118818406] [2021-03-25 12:35:14,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508159035] [2021-03-25 12:35:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:14,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:14,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:14,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:14,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:14,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:14,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:14,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:14,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:14,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:14,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:14,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:14,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:14,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:14,697 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 12:35:14,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:14,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:14,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:14,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:14,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:14,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:14,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:14,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:14,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:14,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:14,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:14,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:14,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,712 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:14,713 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:14,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:14,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:14,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:14,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:14,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:14,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:14,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:14,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:14,731 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:14,732 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:14,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:14,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:14,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 12:35:14,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498398614] [2021-03-25 12:35:14,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 12:35:14,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 12:35:14,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-25 12:35:14,738 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 310 [2021-03-25 12:35:14,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 343 transitions, 15695 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:14,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:14,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 310 [2021-03-25 12:35:14,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:15,664 INFO L129 PetriNetUnfolder]: 240/854 cut-off events. [2021-03-25 12:35:15,665 INFO L130 PetriNetUnfolder]: For 103793/105344 co-relation queries the response was YES. [2021-03-25 12:35:15,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13882 conditions, 854 events. 240/854 cut-off events. For 103793/105344 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7361 event pairs, 0 based on Foata normal form. 42/824 useless extension candidates. Maximal degree in co-relation 13773. Up to 378 conditions per place. [2021-03-25 12:35:15,679 INFO L132 encePairwiseOnDemand]: 247/310 looper letters, 248 selfloop transitions, 100 changer transitions 0/358 dead transitions. [2021-03-25 12:35:15,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 358 transitions, 17244 flow [2021-03-25 12:35:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 12:35:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 12:35:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 987 transitions. [2021-03-25 12:35:15,681 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3183870967741935 [2021-03-25 12:35:15,681 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 987 transitions. [2021-03-25 12:35:15,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 987 transitions. [2021-03-25 12:35:15,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:15,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 987 transitions. [2021-03-25 12:35:15,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:15,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 310.0) internal successors, (3410), 11 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:15,684 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 310.0) internal successors, (3410), 11 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:15,685 INFO L185 Difference]: Start difference. First operand has 258 places, 343 transitions, 15695 flow. Second operand 10 states and 987 transitions. [2021-03-25 12:35:15,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 358 transitions, 17244 flow [2021-03-25 12:35:16,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 358 transitions, 16561 flow, removed 323 selfloop flow, removed 4 redundant places. [2021-03-25 12:35:16,031 INFO L241 Difference]: Finished difference. Result has 265 places, 349 transitions, 15769 flow [2021-03-25 12:35:16,032 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=15150, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15769, PETRI_PLACES=265, PETRI_TRANSITIONS=349} [2021-03-25 12:35:16,032 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2021-03-25 12:35:16,032 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:16,032 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 349 transitions, 15769 flow [2021-03-25 12:35:16,032 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 349 transitions, 15769 flow [2021-03-25 12:35:16,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 265 places, 349 transitions, 15769 flow [2021-03-25 12:35:16,203 INFO L129 PetriNetUnfolder]: 240/854 cut-off events. [2021-03-25 12:35:16,203 INFO L130 PetriNetUnfolder]: For 100706/101865 co-relation queries the response was YES. [2021-03-25 12:35:16,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13042 conditions, 854 events. 240/854 cut-off events. For 100706/101865 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7417 event pairs, 0 based on Foata normal form. 14/792 useless extension candidates. Maximal degree in co-relation 12934. Up to 290 conditions per place. [2021-03-25 12:35:16,223 INFO L142 LiptonReduction]: Number of co-enabled transitions 1724 [2021-03-25 12:35:16,355 INFO L154 LiptonReduction]: Checked pairs total: 509 [2021-03-25 12:35:16,356 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:35:16,356 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 324 [2021-03-25 12:35:16,356 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 349 transitions, 15771 flow [2021-03-25 12:35:16,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:16,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:16,356 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:16,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:16,557 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:16,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1213143249, now seen corresponding path program 1 times [2021-03-25 12:35:16,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:16,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106841507] [2021-03-25 12:35:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:16,568 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:16,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,572 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:16,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,578 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 12:35:16,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:16,584 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:35:16,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:16,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106841507] [2021-03-25 12:35:16,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749367705] [2021-03-25 12:35:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:16,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:16,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:16,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:16,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:16,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:16,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:16,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:16,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:16,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:16,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:16,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:16,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:16,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:16,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:16,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,687 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 12:35:16,688 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 12:35:16,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:16,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:16,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:16,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:35:16,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:16,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:16,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:35:16,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:16,708 INFO L147 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size 20 [2021-03-25 12:35:16,709 INFO L142 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size [2021-03-25 12:35:16,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:35:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:16,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:16,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 12:35:16,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608032431] [2021-03-25 12:35:16,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 12:35:16,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:16,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 12:35:16,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-03-25 12:35:16,722 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 313 [2021-03-25 12:35:16,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 349 transitions, 15771 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:16,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:16,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 313 [2021-03-25 12:35:16,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:17,717 INFO L129 PetriNetUnfolder]: 263/946 cut-off events. [2021-03-25 12:35:17,717 INFO L130 PetriNetUnfolder]: For 120462/122027 co-relation queries the response was YES. [2021-03-25 12:35:17,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15334 conditions, 946 events. 263/946 cut-off events. For 120462/122027 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8273 event pairs, 0 based on Foata normal form. 80/953 useless extension candidates. Maximal degree in co-relation 15224. Up to 372 conditions per place. [2021-03-25 12:35:17,730 INFO L132 encePairwiseOnDemand]: 147/313 looper letters, 143 selfloop transitions, 221 changer transitions 0/374 dead transitions. [2021-03-25 12:35:17,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 374 transitions, 18290 flow [2021-03-25 12:35:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:35:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:35:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1020 transitions. [2021-03-25 12:35:17,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.362087326943557 [2021-03-25 12:35:17,732 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1020 transitions. [2021-03-25 12:35:17,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1020 transitions. [2021-03-25 12:35:17,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:17,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1020 transitions. [2021-03-25 12:35:17,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.33333333333333) internal successors, (1020), 9 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:17,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:17,735 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 313.0) internal successors, (3130), 10 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:17,735 INFO L185 Difference]: Start difference. First operand has 265 places, 349 transitions, 15771 flow. Second operand 9 states and 1020 transitions. [2021-03-25 12:35:17,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 374 transitions, 18290 flow [2021-03-25 12:35:17,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 374 transitions, 18145 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-25 12:35:17,990 INFO L241 Difference]: Finished difference. Result has 269 places, 374 transitions, 18088 flow [2021-03-25 12:35:17,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=15642, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18088, PETRI_PLACES=269, PETRI_TRANSITIONS=374} [2021-03-25 12:35:17,990 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2021-03-25 12:35:17,990 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:17,990 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 374 transitions, 18088 flow [2021-03-25 12:35:17,990 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 374 transitions, 18088 flow [2021-03-25 12:35:17,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 269 places, 374 transitions, 18088 flow [2021-03-25 12:35:18,144 INFO L129 PetriNetUnfolder]: 263/946 cut-off events. [2021-03-25 12:35:18,144 INFO L130 PetriNetUnfolder]: For 128382/129433 co-relation queries the response was YES. [2021-03-25 12:35:18,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15229 conditions, 946 events. 263/946 cut-off events. For 128382/129433 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8347 event pairs, 0 based on Foata normal form. 15/885 useless extension candidates. Maximal degree in co-relation 15119. Up to 336 conditions per place. [2021-03-25 12:35:18,165 INFO L142 LiptonReduction]: Number of co-enabled transitions 1824 [2021-03-25 12:35:18,484 INFO L154 LiptonReduction]: Checked pairs total: 2804 [2021-03-25 12:35:18,485 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-25 12:35:18,485 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 495 [2021-03-25 12:35:18,485 INFO L480 AbstractCegarLoop]: Abstraction has has 269 places, 374 transitions, 18108 flow [2021-03-25 12:35:18,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:18,485 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:18,485 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:18,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-03-25 12:35:18,686 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:18,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1202466093, now seen corresponding path program 1 times [2021-03-25 12:35:18,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:18,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483904630] [2021-03-25 12:35:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:18,705 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:18,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,710 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:18,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,716 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:18,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,723 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:18,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,731 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size [2021-03-25 12:35:18,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:18,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483904630] [2021-03-25 12:35:18,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962843638] [2021-03-25 12:35:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:18,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:18,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:18,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:18,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:18,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:18,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:18,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:18,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:18,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:18,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:18,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:18,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:18,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:18,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:18,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:18,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:18,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:18,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:18,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:18,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:18,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:18,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:18,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:18,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:18,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:18,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:18,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:18,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:18,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 12:35:18,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147927723] [2021-03-25 12:35:18,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 12:35:18,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:18,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 12:35:18,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-03-25 12:35:18,900 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 325 [2021-03-25 12:35:18,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 374 transitions, 18108 flow. Second operand has 12 states, 12 states have (on average 86.0) internal successors, (1032), 12 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:18,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:18,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 325 [2021-03-25 12:35:18,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:19,835 INFO L129 PetriNetUnfolder]: 271/970 cut-off events. [2021-03-25 12:35:19,835 INFO L130 PetriNetUnfolder]: For 131005/132446 co-relation queries the response was YES. [2021-03-25 12:35:19,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 970 events. 271/970 cut-off events. For 131005/132446 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8469 event pairs, 0 based on Foata normal form. 23/915 useless extension candidates. Maximal degree in co-relation 16225. Up to 490 conditions per place. [2021-03-25 12:35:19,853 INFO L132 encePairwiseOnDemand]: 269/325 looper letters, 311 selfloop transitions, 59 changer transitions 0/380 dead transitions. [2021-03-25 12:35:19,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 380 transitions, 19348 flow [2021-03-25 12:35:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 12:35:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 12:35:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 898 transitions. [2021-03-25 12:35:19,854 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3453846153846154 [2021-03-25 12:35:19,854 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 898 transitions. [2021-03-25 12:35:19,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 898 transitions. [2021-03-25 12:35:19,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:19,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 898 transitions. [2021-03-25 12:35:19,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.25) internal successors, (898), 8 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:19,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:19,857 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:19,857 INFO L185 Difference]: Start difference. First operand has 269 places, 374 transitions, 18108 flow. Second operand 8 states and 898 transitions. [2021-03-25 12:35:19,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 380 transitions, 19348 flow [2021-03-25 12:35:20,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 380 transitions, 18629 flow, removed 271 selfloop flow, removed 5 redundant places. [2021-03-25 12:35:20,190 INFO L241 Difference]: Finished difference. Result has 273 places, 378 transitions, 17837 flow [2021-03-25 12:35:20,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=17389, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17837, PETRI_PLACES=273, PETRI_TRANSITIONS=378} [2021-03-25 12:35:20,190 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2021-03-25 12:35:20,190 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:20,191 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 378 transitions, 17837 flow [2021-03-25 12:35:20,191 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 378 transitions, 17837 flow [2021-03-25 12:35:20,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 273 places, 378 transitions, 17837 flow [2021-03-25 12:35:20,360 INFO L129 PetriNetUnfolder]: 271/968 cut-off events. [2021-03-25 12:35:20,361 INFO L130 PetriNetUnfolder]: For 127347/128286 co-relation queries the response was YES. [2021-03-25 12:35:20,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15445 conditions, 968 events. 271/968 cut-off events. For 127347/128286 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8578 event pairs, 1 based on Foata normal form. 9/896 useless extension candidates. Maximal degree in co-relation 15334. Up to 328 conditions per place. [2021-03-25 12:35:20,380 INFO L142 LiptonReduction]: Number of co-enabled transitions 1844 [2021-03-25 12:35:20,531 INFO L154 LiptonReduction]: Checked pairs total: 652 [2021-03-25 12:35:20,531 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:35:20,532 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 342 [2021-03-25 12:35:20,532 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 378 transitions, 17841 flow [2021-03-25 12:35:20,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 86.0) internal successors, (1032), 12 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:20,532 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:20,532 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:20,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:20,733 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:20,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:20,733 INFO L82 PathProgramCache]: Analyzing trace with hash 448167666, now seen corresponding path program 1 times [2021-03-25 12:35:20,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:20,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634916028] [2021-03-25 12:35:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:20,749 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:20,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,754 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:35:20,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,760 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 12:35:20,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,769 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 12:35:20,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,777 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 12:35:20,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:20,786 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 12:35:20,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:20,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634916028] [2021-03-25 12:35:20,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929616358] [2021-03-25 12:35:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:20,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-25 12:35:20,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:20,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:20,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:20,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:20,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:20,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:20,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,895 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 12:35:20,895 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 12:35:20,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:20,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:35:20,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:20,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:35:20,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:20,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 12:35:20,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:20,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 12:35:20,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:20,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 12:35:20,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:20,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:20,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 12:35:20,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:20,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:20,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:20,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:20,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094995738] [2021-03-25 12:35:20,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:20,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:20,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:20,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:20,965 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 328 [2021-03-25 12:35:20,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 378 transitions, 17841 flow. Second operand has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:20,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:20,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 328 [2021-03-25 12:35:20,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:22,449 INFO L129 PetriNetUnfolder]: 314/1132 cut-off events. [2021-03-25 12:35:22,449 INFO L130 PetriNetUnfolder]: For 171663/173005 co-relation queries the response was YES. [2021-03-25 12:35:22,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19403 conditions, 1132 events. 314/1132 cut-off events. For 171663/173005 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 10079 event pairs, 0 based on Foata normal form. 25/1066 useless extension candidates. Maximal degree in co-relation 19290. Up to 406 conditions per place. [2021-03-25 12:35:22,467 INFO L132 encePairwiseOnDemand]: 126/328 looper letters, 110 selfloop transitions, 302 changer transitions 0/422 dead transitions. [2021-03-25 12:35:22,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 422 transitions, 21556 flow [2021-03-25 12:35:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-25 12:35:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-25 12:35:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1845 transitions. [2021-03-25 12:35:22,469 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3125 [2021-03-25 12:35:22,469 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1845 transitions. [2021-03-25 12:35:22,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1845 transitions. [2021-03-25 12:35:22,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:22,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1845 transitions. [2021-03-25 12:35:22,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.5) internal successors, (1845), 18 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:22,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 328.0) internal successors, (6232), 19 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:22,474 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 328.0) internal successors, (6232), 19 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:22,474 INFO L185 Difference]: Start difference. First operand has 273 places, 378 transitions, 17841 flow. Second operand 18 states and 1845 transitions. [2021-03-25 12:35:22,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 422 transitions, 21556 flow [2021-03-25 12:35:22,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 422 transitions, 21130 flow, removed 176 selfloop flow, removed 4 redundant places. [2021-03-25 12:35:22,828 INFO L241 Difference]: Finished difference. Result has 288 places, 419 transitions, 20862 flow [2021-03-25 12:35:22,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=17592, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=20862, PETRI_PLACES=288, PETRI_TRANSITIONS=419} [2021-03-25 12:35:22,829 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2021-03-25 12:35:22,829 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:22,829 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 419 transitions, 20862 flow [2021-03-25 12:35:22,829 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 419 transitions, 20862 flow [2021-03-25 12:35:22,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 288 places, 419 transitions, 20862 flow [2021-03-25 12:35:23,032 INFO L129 PetriNetUnfolder]: 314/1128 cut-off events. [2021-03-25 12:35:23,032 INFO L130 PetriNetUnfolder]: For 165870/166757 co-relation queries the response was YES. [2021-03-25 12:35:23,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19012 conditions, 1128 events. 314/1128 cut-off events. For 165870/166757 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10073 event pairs, 3 based on Foata normal form. 6/1046 useless extension candidates. Maximal degree in co-relation 18898. Up to 386 conditions per place. [2021-03-25 12:35:23,057 INFO L142 LiptonReduction]: Number of co-enabled transitions 2016 [2021-03-25 12:35:23,516 INFO L154 LiptonReduction]: Checked pairs total: 1634 [2021-03-25 12:35:23,516 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-25 12:35:23,517 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 688 [2021-03-25 12:35:23,517 INFO L480 AbstractCegarLoop]: Abstraction has has 288 places, 419 transitions, 20904 flow [2021-03-25 12:35:23,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:23,517 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:23,517 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:23,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-03-25 12:35:23,720 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:23,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:23,720 INFO L82 PathProgramCache]: Analyzing trace with hash 52943120, now seen corresponding path program 1 times [2021-03-25 12:35:23,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:23,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537439724] [2021-03-25 12:35:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:23,736 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:23,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,744 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:35:23,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:23,749 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 12:35:23,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:23,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:23,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:35:23,769 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:23,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:23,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537439724] [2021-03-25 12:35:23,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453423205] [2021-03-25 12:35:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:23,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:23,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:23,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:23,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:23,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:23,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:23,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:23,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:23,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:23,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:23,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:23,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:23,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:23,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:23,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:23,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:23,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:23,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,861 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 12:35:23,862 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 12:35:23,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:23,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:23,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:23,878 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-25 12:35:23,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:35:23,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:35:23,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:23,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:23,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:35:23,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:23,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:23,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:35:23,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:35:23,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:35:23,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:23,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:23,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 12:35:23,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:23,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:35:23,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:35:23,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:23,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:23,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:23,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:23,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-25 12:35:23,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911811274] [2021-03-25 12:35:23,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 12:35:23,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:23,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 12:35:23,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-03-25 12:35:23,943 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 339 [2021-03-25 12:35:23,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 419 transitions, 20904 flow. Second operand has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:23,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:23,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 339 [2021-03-25 12:35:23,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:25,288 INFO L129 PetriNetUnfolder]: 317/1149 cut-off events. [2021-03-25 12:35:25,289 INFO L130 PetriNetUnfolder]: For 172772/174228 co-relation queries the response was YES. [2021-03-25 12:35:25,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19989 conditions, 1149 events. 317/1149 cut-off events. For 172772/174228 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10422 event pairs, 4 based on Foata normal form. 44/1104 useless extension candidates. Maximal degree in co-relation 19873. Up to 395 conditions per place. [2021-03-25 12:35:25,307 INFO L132 encePairwiseOnDemand]: 170/339 looper letters, 134 selfloop transitions, 294 changer transitions 0/438 dead transitions. [2021-03-25 12:35:25,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 438 transitions, 23000 flow [2021-03-25 12:35:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-25 12:35:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-25 12:35:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1565 transitions. [2021-03-25 12:35:25,309 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.271559951414194 [2021-03-25 12:35:25,309 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1565 transitions. [2021-03-25 12:35:25,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1565 transitions. [2021-03-25 12:35:25,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:25,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1565 transitions. [2021-03-25 12:35:25,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 92.05882352941177) internal successors, (1565), 17 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:25,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 339.0) internal successors, (6102), 18 states have internal predecessors, (6102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:25,315 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 339.0) internal successors, (6102), 18 states have internal predecessors, (6102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:25,315 INFO L185 Difference]: Start difference. First operand has 288 places, 419 transitions, 20904 flow. Second operand 17 states and 1565 transitions. [2021-03-25 12:35:25,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 438 transitions, 23000 flow [2021-03-25 12:35:25,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 438 transitions, 21739 flow, removed 471 selfloop flow, removed 10 redundant places. [2021-03-25 12:35:25,718 INFO L241 Difference]: Finished difference. Result has 296 places, 427 transitions, 21216 flow [2021-03-25 12:35:25,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=19888, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21216, PETRI_PLACES=296, PETRI_TRANSITIONS=427} [2021-03-25 12:35:25,719 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2021-03-25 12:35:25,719 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:25,719 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 427 transitions, 21216 flow [2021-03-25 12:35:25,719 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 427 transitions, 21216 flow [2021-03-25 12:35:25,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 296 places, 427 transitions, 21216 flow [2021-03-25 12:35:25,920 INFO L129 PetriNetUnfolder]: 317/1147 cut-off events. [2021-03-25 12:35:25,920 INFO L130 PetriNetUnfolder]: For 142477/143520 co-relation queries the response was YES. [2021-03-25 12:35:25,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18312 conditions, 1147 events. 317/1147 cut-off events. For 142477/143520 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10532 event pairs, 4 based on Foata normal form. 6/1065 useless extension candidates. Maximal degree in co-relation 18197. Up to 377 conditions per place. [2021-03-25 12:35:25,944 INFO L142 LiptonReduction]: Number of co-enabled transitions 2050 [2021-03-25 12:35:26,140 INFO L154 LiptonReduction]: Checked pairs total: 912 [2021-03-25 12:35:26,141 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:35:26,141 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 422 [2021-03-25 12:35:26,141 INFO L480 AbstractCegarLoop]: Abstraction has has 296 places, 427 transitions, 21218 flow [2021-03-25 12:35:26,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:26,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:26,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:26,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:26,342 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:26,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:26,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1286894732, now seen corresponding path program 1 times [2021-03-25 12:35:26,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:26,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245662607] [2021-03-25 12:35:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:26,356 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:26,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,361 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:26,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:26,367 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:26,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:26,375 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:26,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:26,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245662607] [2021-03-25 12:35:26,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283462253] [2021-03-25 12:35:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:26,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 12:35:26,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:26,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:26,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:26,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:26,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:26,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:26,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:26,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:26,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:26,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:26,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:26,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:26,490 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 12:35:26,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:26,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:26,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:26,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:26,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:26,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:26,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:26,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:26,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:26,504 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:26,504 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:26,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:26,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:26,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-25 12:35:26,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990361981] [2021-03-25 12:35:26,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 12:35:26,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:26,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 12:35:26,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 12:35:26,509 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 344 [2021-03-25 12:35:26,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 427 transitions, 21218 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:26,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:26,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 344 [2021-03-25 12:35:26,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:27,336 INFO L129 PetriNetUnfolder]: 319/1159 cut-off events. [2021-03-25 12:35:27,336 INFO L130 PetriNetUnfolder]: For 149372/150952 co-relation queries the response was YES. [2021-03-25 12:35:27,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19069 conditions, 1159 events. 319/1159 cut-off events. For 149372/150952 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10608 event pairs, 3 based on Foata normal form. 42/1109 useless extension candidates. Maximal degree in co-relation 18952. Up to 565 conditions per place. [2021-03-25 12:35:27,390 INFO L132 encePairwiseOnDemand]: 297/344 looper letters, 358 selfloop transitions, 68 changer transitions 0/436 dead transitions. [2021-03-25 12:35:27,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 436 transitions, 22539 flow [2021-03-25 12:35:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 12:35:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 12:35:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2021-03-25 12:35:27,392 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.32059800664451826 [2021-03-25 12:35:27,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2021-03-25 12:35:27,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2021-03-25 12:35:27,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:27,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2021-03-25 12:35:27,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:27,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:27,394 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 344.0) internal successors, (2752), 8 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:27,394 INFO L185 Difference]: Start difference. First operand has 296 places, 427 transitions, 21218 flow. Second operand 7 states and 772 transitions. [2021-03-25 12:35:27,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 436 transitions, 22539 flow [2021-03-25 12:35:27,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 436 transitions, 21898 flow, removed 46 selfloop flow, removed 15 redundant places. [2021-03-25 12:35:27,750 INFO L241 Difference]: Finished difference. Result has 288 places, 429 transitions, 20901 flow [2021-03-25 12:35:27,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=20577, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20901, PETRI_PLACES=288, PETRI_TRANSITIONS=429} [2021-03-25 12:35:27,750 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2021-03-25 12:35:27,750 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:27,750 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 429 transitions, 20901 flow [2021-03-25 12:35:27,750 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 429 transitions, 20901 flow [2021-03-25 12:35:27,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 288 places, 429 transitions, 20901 flow [2021-03-25 12:35:27,948 INFO L129 PetriNetUnfolder]: 319/1155 cut-off events. [2021-03-25 12:35:27,948 INFO L130 PetriNetUnfolder]: For 144271/145049 co-relation queries the response was YES. [2021-03-25 12:35:27,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18228 conditions, 1155 events. 319/1155 cut-off events. For 144271/145049 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10617 event pairs, 3 based on Foata normal form. 3/1069 useless extension candidates. Maximal degree in co-relation 18113. Up to 379 conditions per place. [2021-03-25 12:35:27,972 INFO L142 LiptonReduction]: Number of co-enabled transitions 2060 [2021-03-25 12:35:28,101 INFO L154 LiptonReduction]: Checked pairs total: 155 [2021-03-25 12:35:28,101 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:35:28,102 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 352 [2021-03-25 12:35:28,102 INFO L480 AbstractCegarLoop]: Abstraction has has 288 places, 429 transitions, 20901 flow [2021-03-25 12:35:28,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:28,102 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:28,102 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:28,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-03-25 12:35:28,316 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:28,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1222402460, now seen corresponding path program 1 times [2021-03-25 12:35:28,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:28,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865506203] [2021-03-25 12:35:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:28,328 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:28,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,333 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:28,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:28,338 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:28,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:28,345 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:28,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:28,352 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:28,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:28,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865506203] [2021-03-25 12:35:28,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866864570] [2021-03-25 12:35:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:28,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:28,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:28,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:28,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:28,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:28,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:28,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:28,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:28,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:28,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:28,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:28,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:28,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:28,426 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 12:35:28,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:28,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:28,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:28,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:28,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:28,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:28,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:28,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:28,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:28,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:28,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:28,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:28,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:28,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:28,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:28,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:28,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:28,452 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:28,453 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:28,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:28,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:28,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 12:35:28,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953071066] [2021-03-25 12:35:28,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 12:35:28,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:28,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 12:35:28,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 12:35:28,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 345 [2021-03-25 12:35:28,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 429 transitions, 20901 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:28,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:28,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 345 [2021-03-25 12:35:28,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:29,517 INFO L129 PetriNetUnfolder]: 321/1167 cut-off events. [2021-03-25 12:35:29,518 INFO L130 PetriNetUnfolder]: For 153008/154359 co-relation queries the response was YES. [2021-03-25 12:35:29,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18991 conditions, 1167 events. 321/1167 cut-off events. For 153008/154359 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10723 event pairs, 3 based on Foata normal form. 42/1117 useless extension candidates. Maximal degree in co-relation 18874. Up to 544 conditions per place. [2021-03-25 12:35:29,536 INFO L132 encePairwiseOnDemand]: 280/345 looper letters, 333 selfloop transitions, 96 changer transitions 0/439 dead transitions. [2021-03-25 12:35:29,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 439 transitions, 22247 flow [2021-03-25 12:35:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 12:35:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 12:35:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 855 transitions. [2021-03-25 12:35:29,538 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.30978260869565216 [2021-03-25 12:35:29,538 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 855 transitions. [2021-03-25 12:35:29,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 855 transitions. [2021-03-25 12:35:29,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:29,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 855 transitions. [2021-03-25 12:35:29,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.875) internal successors, (855), 8 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:29,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 345.0) internal successors, (3105), 9 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:29,540 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 345.0) internal successors, (3105), 9 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:29,540 INFO L185 Difference]: Start difference. First operand has 288 places, 429 transitions, 20901 flow. Second operand 8 states and 855 transitions. [2021-03-25 12:35:29,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 439 transitions, 22247 flow [2021-03-25 12:35:29,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 439 transitions, 22156 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 12:35:29,934 INFO L241 Difference]: Finished difference. Result has 292 places, 432 transitions, 21245 flow [2021-03-25 12:35:29,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=20810, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21245, PETRI_PLACES=292, PETRI_TRANSITIONS=432} [2021-03-25 12:35:29,934 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2021-03-25 12:35:29,934 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:29,934 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 432 transitions, 21245 flow [2021-03-25 12:35:29,934 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 432 transitions, 21245 flow [2021-03-25 12:35:29,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 292 places, 432 transitions, 21245 flow [2021-03-25 12:35:30,135 INFO L129 PetriNetUnfolder]: 321/1163 cut-off events. [2021-03-25 12:35:30,135 INFO L130 PetriNetUnfolder]: For 148459/149266 co-relation queries the response was YES. [2021-03-25 12:35:30,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18482 conditions, 1163 events. 321/1163 cut-off events. For 148459/149266 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10734 event pairs, 3 based on Foata normal form. 3/1075 useless extension candidates. Maximal degree in co-relation 18365. Up to 381 conditions per place. [2021-03-25 12:35:30,165 INFO L142 LiptonReduction]: Number of co-enabled transitions 2074 [2021-03-25 12:35:30,311 INFO L154 LiptonReduction]: Checked pairs total: 156 [2021-03-25 12:35:30,311 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:35:30,312 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 378 [2021-03-25 12:35:30,312 INFO L480 AbstractCegarLoop]: Abstraction has has 292 places, 432 transitions, 21245 flow [2021-03-25 12:35:30,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:30,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:30,312 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:30,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-03-25 12:35:30,516 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:30,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1239023389, now seen corresponding path program 1 times [2021-03-25 12:35:30,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:30,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465520088] [2021-03-25 12:35:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:30,539 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:30,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,554 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:35:30,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:30,560 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:30,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:30,569 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:30,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:30,579 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:30,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:30,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465520088] [2021-03-25 12:35:30,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298615582] [2021-03-25 12:35:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:30,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 12:35:30,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:30,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:30,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:30,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:30,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:30,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:30,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:30,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:30,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:30,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:30,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:30,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:30,691 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 12:35:30,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:30,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:30,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:30,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:30,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:30,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:30,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:30,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:30,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:30,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:30,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:30,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:30,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:30,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:30,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:30,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:30,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:30,737 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:30,737 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:30,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:30,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:30,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 12:35:30,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033455599] [2021-03-25 12:35:30,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 12:35:30,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:30,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 12:35:30,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 12:35:30,745 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 346 [2021-03-25 12:35:30,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 432 transitions, 21245 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:30,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:30,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 346 [2021-03-25 12:35:30,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:31,771 INFO L129 PetriNetUnfolder]: 323/1173 cut-off events. [2021-03-25 12:35:31,771 INFO L130 PetriNetUnfolder]: For 154543/155895 co-relation queries the response was YES. [2021-03-25 12:35:31,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19245 conditions, 1173 events. 323/1173 cut-off events. For 154543/155895 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10771 event pairs, 2 based on Foata normal form. 42/1122 useless extension candidates. Maximal degree in co-relation 19126. Up to 562 conditions per place. [2021-03-25 12:35:31,790 INFO L132 encePairwiseOnDemand]: 289/346 looper letters, 350 selfloop transitions, 82 changer transitions 0/442 dead transitions. [2021-03-25 12:35:31,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 442 transitions, 22613 flow [2021-03-25 12:35:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 12:35:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 12:35:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 856 transitions. [2021-03-25 12:35:31,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3092485549132948 [2021-03-25 12:35:31,792 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 856 transitions. [2021-03-25 12:35:31,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 856 transitions. [2021-03-25 12:35:31,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:31,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 856 transitions. [2021-03-25 12:35:31,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:31,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:31,794 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:31,794 INFO L185 Difference]: Start difference. First operand has 292 places, 432 transitions, 21245 flow. Second operand 8 states and 856 transitions. [2021-03-25 12:35:31,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 442 transitions, 22613 flow [2021-03-25 12:35:32,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 442 transitions, 22498 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-25 12:35:32,224 INFO L241 Difference]: Finished difference. Result has 296 places, 435 transitions, 21543 flow [2021-03-25 12:35:32,224 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=21130, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21543, PETRI_PLACES=296, PETRI_TRANSITIONS=435} [2021-03-25 12:35:32,225 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2021-03-25 12:35:32,225 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:32,225 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 435 transitions, 21543 flow [2021-03-25 12:35:32,225 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 435 transitions, 21543 flow [2021-03-25 12:35:32,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 296 places, 435 transitions, 21543 flow [2021-03-25 12:35:32,479 INFO L129 PetriNetUnfolder]: 323/1175 cut-off events. [2021-03-25 12:35:32,480 INFO L130 PetriNetUnfolder]: For 152536/153349 co-relation queries the response was YES. [2021-03-25 12:35:32,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18704 conditions, 1175 events. 323/1175 cut-off events. For 152536/153349 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10895 event pairs, 2 based on Foata normal form. 6/1087 useless extension candidates. Maximal degree in co-relation 18585. Up to 383 conditions per place. [2021-03-25 12:35:32,512 INFO L142 LiptonReduction]: Number of co-enabled transitions 2088 [2021-03-25 12:35:32,635 INFO L154 LiptonReduction]: Checked pairs total: 157 [2021-03-25 12:35:32,635 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:35:32,635 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 410 [2021-03-25 12:35:32,635 INFO L480 AbstractCegarLoop]: Abstraction has has 296 places, 435 transitions, 21543 flow [2021-03-25 12:35:32,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:32,636 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:32,636 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:32,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-03-25 12:35:32,836 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:32,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1142202611, now seen corresponding path program 1 times [2021-03-25 12:35:32,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:32,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011912245] [2021-03-25 12:35:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:32,849 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:32,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,855 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 12:35:32,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,866 INFO L142 QuantifierPusher]: treesize reduction 7, result has 73.1 percent of original size [2021-03-25 12:35:32,867 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-03-25 12:35:32,883 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-25 12:35:32,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:32,892 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-25 12:35:32,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:32,904 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:35:32,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:32,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011912245] [2021-03-25 12:35:32,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964040554] [2021-03-25 12:35:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:32,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:32,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:32,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:32,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:32,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:32,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:32,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:32,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:32,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:32,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:33,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:33,001 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-25 12:35:33,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 12:35:33,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 12:35:33,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:33,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:33,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:33,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:33,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:33,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:33,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:33,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:33,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:33,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:33,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:33,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:33,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:33,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:33,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:33,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:33,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:33,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:33,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:33,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:33,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:33,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:33,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:33,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:33,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:33,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:33,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:33,072 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:33,073 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:33,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:33,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:33,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:33,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87907731] [2021-03-25 12:35:33,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:33,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:33,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:33,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:33,087 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 347 [2021-03-25 12:35:33,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 435 transitions, 21543 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:33,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:33,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 347 [2021-03-25 12:35:33,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:34,181 INFO L129 PetriNetUnfolder]: 328/1193 cut-off events. [2021-03-25 12:35:34,181 INFO L130 PetriNetUnfolder]: For 160234/161587 co-relation queries the response was YES. [2021-03-25 12:35:34,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19651 conditions, 1193 events. 328/1193 cut-off events. For 160234/161587 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11025 event pairs, 2 based on Foata normal form. 60/1159 useless extension candidates. Maximal degree in co-relation 19530. Up to 579 conditions per place. [2021-03-25 12:35:34,198 INFO L132 encePairwiseOnDemand]: 306/347 looper letters, 369 selfloop transitions, 71 changer transitions 0/450 dead transitions. [2021-03-25 12:35:34,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 450 transitions, 23123 flow [2021-03-25 12:35:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:35:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:35:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 933 transitions. [2021-03-25 12:35:34,199 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2987512007684918 [2021-03-25 12:35:34,199 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 933 transitions. [2021-03-25 12:35:34,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 933 transitions. [2021-03-25 12:35:34,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:34,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 933 transitions. [2021-03-25 12:35:34,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.66666666666667) internal successors, (933), 9 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:34,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 347.0) internal successors, (3470), 10 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:34,202 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 347.0) internal successors, (3470), 10 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:34,202 INFO L185 Difference]: Start difference. First operand has 296 places, 435 transitions, 21543 flow. Second operand 9 states and 933 transitions. [2021-03-25 12:35:34,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 450 transitions, 23123 flow [2021-03-25 12:35:34,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 450 transitions, 22987 flow, removed 20 selfloop flow, removed 5 redundant places. [2021-03-25 12:35:34,588 INFO L241 Difference]: Finished difference. Result has 300 places, 440 transitions, 21881 flow [2021-03-25 12:35:34,588 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=21407, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21881, PETRI_PLACES=300, PETRI_TRANSITIONS=440} [2021-03-25 12:35:34,588 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2021-03-25 12:35:34,588 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:34,589 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 440 transitions, 21881 flow [2021-03-25 12:35:34,589 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 440 transitions, 21881 flow [2021-03-25 12:35:34,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 300 places, 440 transitions, 21881 flow [2021-03-25 12:35:34,796 INFO L129 PetriNetUnfolder]: 328/1195 cut-off events. [2021-03-25 12:35:34,797 INFO L130 PetriNetUnfolder]: For 159585/160493 co-relation queries the response was YES. [2021-03-25 12:35:34,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19065 conditions, 1195 events. 328/1195 cut-off events. For 159585/160493 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11098 event pairs, 2 based on Foata normal form. 3/1100 useless extension candidates. Maximal degree in co-relation 18945. Up to 391 conditions per place. [2021-03-25 12:35:34,827 INFO L142 LiptonReduction]: Number of co-enabled transitions 2108 [2021-03-25 12:35:34,956 INFO L154 LiptonReduction]: Checked pairs total: 157 [2021-03-25 12:35:34,956 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:35:34,956 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 368 [2021-03-25 12:35:34,956 INFO L480 AbstractCegarLoop]: Abstraction has has 300 places, 440 transitions, 21881 flow [2021-03-25 12:35:34,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:34,956 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:34,956 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:35,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-03-25 12:35:35,157 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:35,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:35,157 INFO L82 PathProgramCache]: Analyzing trace with hash 797771044, now seen corresponding path program 1 times [2021-03-25 12:35:35,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:35,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745359761] [2021-03-25 12:35:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:35,169 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:35,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,175 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:35:35,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,183 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:35:35,183 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:35:35,197 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-25 12:35:35,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,212 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-25 12:35:35,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,223 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:35:35,224 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:35:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:35,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745359761] [2021-03-25 12:35:35,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842511433] [2021-03-25 12:35:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:35,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:35,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:35,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:35,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:35,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:35,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:35,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:35,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:35,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:35,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:35,307 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 12:35:35,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:35:35,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:35:35,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:35,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:35,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:35,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:35,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:35,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:35,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:35,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:35,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:35,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:35,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:35,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:35,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:35,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:35,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:35,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:35,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:35,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:35,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:35,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:35,400 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:35,401 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:35,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:35,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:35,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:35,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844974413] [2021-03-25 12:35:35,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:35,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:35,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:35,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:35,414 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 348 [2021-03-25 12:35:35,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 440 transitions, 21881 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:35,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:35,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 348 [2021-03-25 12:35:35,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:36,536 INFO L129 PetriNetUnfolder]: 332/1209 cut-off events. [2021-03-25 12:35:36,536 INFO L130 PetriNetUnfolder]: For 163993/165347 co-relation queries the response was YES. [2021-03-25 12:35:36,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19949 conditions, 1209 events. 332/1209 cut-off events. For 163993/165347 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11235 event pairs, 2 based on Foata normal form. 60/1173 useless extension candidates. Maximal degree in co-relation 19827. Up to 503 conditions per place. [2021-03-25 12:35:36,564 INFO L132 encePairwiseOnDemand]: 272/348 looper letters, 290 selfloop transitions, 153 changer transitions 0/453 dead transitions. [2021-03-25 12:35:36,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 453 transitions, 23412 flow [2021-03-25 12:35:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:35:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:35:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 942 transitions. [2021-03-25 12:35:36,566 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3007662835249042 [2021-03-25 12:35:36,566 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 942 transitions. [2021-03-25 12:35:36,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 942 transitions. [2021-03-25 12:35:36,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:36,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 942 transitions. [2021-03-25 12:35:36,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.66666666666667) internal successors, (942), 9 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:36,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 348.0) internal successors, (3480), 10 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:36,570 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 348.0) internal successors, (3480), 10 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:36,570 INFO L185 Difference]: Start difference. First operand has 300 places, 440 transitions, 21881 flow. Second operand 9 states and 942 transitions. [2021-03-25 12:35:36,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 453 transitions, 23412 flow [2021-03-25 12:35:36,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 453 transitions, 23329 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 12:35:37,013 INFO L241 Difference]: Finished difference. Result has 304 places, 444 transitions, 22443 flow [2021-03-25 12:35:37,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=21798, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22443, PETRI_PLACES=304, PETRI_TRANSITIONS=444} [2021-03-25 12:35:37,013 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2021-03-25 12:35:37,013 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:37,013 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 444 transitions, 22443 flow [2021-03-25 12:35:37,014 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 444 transitions, 22443 flow [2021-03-25 12:35:37,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 304 places, 444 transitions, 22443 flow [2021-03-25 12:35:37,232 INFO L129 PetriNetUnfolder]: 332/1207 cut-off events. [2021-03-25 12:35:37,233 INFO L130 PetriNetUnfolder]: For 162056/162899 co-relation queries the response was YES. [2021-03-25 12:35:37,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19493 conditions, 1207 events. 332/1207 cut-off events. For 162056/162899 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11258 event pairs, 2 based on Foata normal form. 4/1116 useless extension candidates. Maximal degree in co-relation 19372. Up to 397 conditions per place. [2021-03-25 12:35:37,259 INFO L142 LiptonReduction]: Number of co-enabled transitions 2124 [2021-03-25 12:35:37,399 INFO L154 LiptonReduction]: Checked pairs total: 157 [2021-03-25 12:35:37,399 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:35:37,399 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 386 [2021-03-25 12:35:37,399 INFO L480 AbstractCegarLoop]: Abstraction has has 304 places, 444 transitions, 22443 flow [2021-03-25 12:35:37,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:37,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:37,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:37,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:37,600 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:37,600 INFO L82 PathProgramCache]: Analyzing trace with hash 718843285, now seen corresponding path program 1 times [2021-03-25 12:35:37,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:37,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808325779] [2021-03-25 12:35:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:37,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:37,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808325779] [2021-03-25 12:35:37,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589564924] [2021-03-25 12:35:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:37,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 12:35:37,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:37,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:37,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:37,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:37,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:37,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:37,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:37,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:37,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:37,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:37,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:37,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:37,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:37,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:35:37,731 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 12:35:37,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:35:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:37,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-25 12:35:37,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-03-25 12:35:37,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415143277] [2021-03-25 12:35:37,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 12:35:37,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:37,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 12:35:37,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-25 12:35:37,736 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 349 [2021-03-25 12:35:37,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 444 transitions, 22443 flow. Second operand has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:37,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:37,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 349 [2021-03-25 12:35:37,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:38,533 INFO L129 PetriNetUnfolder]: 349/1264 cut-off events. [2021-03-25 12:35:38,534 INFO L130 PetriNetUnfolder]: For 188366/189657 co-relation queries the response was YES. [2021-03-25 12:35:38,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21302 conditions, 1264 events. 349/1264 cut-off events. For 188366/189657 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11822 event pairs, 3 based on Foata normal form. 177/1328 useless extension candidates. Maximal degree in co-relation 21179. Up to 451 conditions per place. [2021-03-25 12:35:38,554 INFO L132 encePairwiseOnDemand]: 331/349 looper letters, 124 selfloop transitions, 16 changer transitions 0/444 dead transitions. [2021-03-25 12:35:38,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 444 transitions, 22504 flow [2021-03-25 12:35:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 12:35:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 12:35:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1225 transitions. [2021-03-25 12:35:38,555 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7020057306590258 [2021-03-25 12:35:38,555 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1225 transitions. [2021-03-25 12:35:38,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1225 transitions. [2021-03-25 12:35:38,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:38,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1225 transitions. [2021-03-25 12:35:38,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:38,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:38,557 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:38,557 INFO L185 Difference]: Start difference. First operand has 304 places, 444 transitions, 22443 flow. Second operand 5 states and 1225 transitions. [2021-03-25 12:35:38,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 444 transitions, 22504 flow [2021-03-25 12:35:38,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 444 transitions, 22347 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 12:35:39,011 INFO L241 Difference]: Finished difference. Result has 305 places, 443 transitions, 22146 flow [2021-03-25 12:35:39,012 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=21806, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=22146, PETRI_PLACES=305, PETRI_TRANSITIONS=443} [2021-03-25 12:35:39,012 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2021-03-25 12:35:39,012 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:39,012 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 443 transitions, 22146 flow [2021-03-25 12:35:39,012 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 443 transitions, 22146 flow [2021-03-25 12:35:39,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 305 places, 443 transitions, 22146 flow [2021-03-25 12:35:39,253 INFO L129 PetriNetUnfolder]: 349/1262 cut-off events. [2021-03-25 12:35:39,253 INFO L130 PetriNetUnfolder]: For 181994/183021 co-relation queries the response was YES. [2021-03-25 12:35:39,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21049 conditions, 1262 events. 349/1262 cut-off events. For 181994/183021 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11846 event pairs, 3 based on Foata normal form. 26/1175 useless extension candidates. Maximal degree in co-relation 20927. Up to 407 conditions per place. [2021-03-25 12:35:39,283 INFO L142 LiptonReduction]: Number of co-enabled transitions 2158 [2021-03-25 12:35:39,679 INFO L154 LiptonReduction]: Checked pairs total: 699 [2021-03-25 12:35:39,679 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:35:39,680 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 668 [2021-03-25 12:35:39,680 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 443 transitions, 22184 flow [2021-03-25 12:35:39,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:39,680 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:39,680 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:39,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-03-25 12:35:39,903 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1055986218, now seen corresponding path program 1 times [2021-03-25 12:35:39,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:39,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24324843] [2021-03-25 12:35:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:39,918 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:39,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:39,923 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:35:39,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:39,929 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:39,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:39,937 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:39,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:39,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:39,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:39,953 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:35:39,953 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:35:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:39,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24324843] [2021-03-25 12:35:39,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393281986] [2021-03-25 12:35:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:40,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:40,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:40,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:40,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:40,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:40,043 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:35:40,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:40,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:40,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:40,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:40,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:40,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:40,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:40,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:40,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:40,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:40,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:40,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:40,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:40,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:40,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:40,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:40,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:40,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:40,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:40,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:40,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:40,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:40,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:40,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:40,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:40,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:40,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:40,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:40,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:40,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:40,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:40,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:40,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,097 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:40,098 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:40,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:40,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:40,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:40,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:40,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:40,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:40,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:40,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:40,117 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:40,117 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:40,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:40,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:40,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:40,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158496685] [2021-03-25 12:35:40,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:40,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:40,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:40,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:40,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 354 [2021-03-25 12:35:40,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 443 transitions, 22184 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:40,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:40,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 354 [2021-03-25 12:35:40,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:41,341 INFO L129 PetriNetUnfolder]: 348/1268 cut-off events. [2021-03-25 12:35:41,342 INFO L130 PetriNetUnfolder]: For 190434/192820 co-relation queries the response was YES. [2021-03-25 12:35:41,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21726 conditions, 1268 events. 348/1268 cut-off events. For 190434/192820 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11860 event pairs, 3 based on Foata normal form. 51/1202 useless extension candidates. Maximal degree in co-relation 21602. Up to 611 conditions per place. [2021-03-25 12:35:41,362 INFO L132 encePairwiseOnDemand]: 304/354 looper letters, 368 selfloop transitions, 81 changer transitions 0/460 dead transitions. [2021-03-25 12:35:41,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 460 transitions, 23890 flow [2021-03-25 12:35:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:35:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:35:41,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 943 transitions. [2021-03-25 12:35:41,364 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29598242310106715 [2021-03-25 12:35:41,364 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 943 transitions. [2021-03-25 12:35:41,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 943 transitions. [2021-03-25 12:35:41,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:41,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 943 transitions. [2021-03-25 12:35:41,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.77777777777777) internal successors, (943), 9 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:41,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 354.0) internal successors, (3540), 10 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:41,366 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 354.0) internal successors, (3540), 10 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:41,366 INFO L185 Difference]: Start difference. First operand has 305 places, 443 transitions, 22184 flow. Second operand 9 states and 943 transitions. [2021-03-25 12:35:41,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 460 transitions, 23890 flow [2021-03-25 12:35:41,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 460 transitions, 23887 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 12:35:41,820 INFO L241 Difference]: Finished difference. Result has 315 places, 446 transitions, 22601 flow [2021-03-25 12:35:41,820 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=22139, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22601, PETRI_PLACES=315, PETRI_TRANSITIONS=446} [2021-03-25 12:35:41,820 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2021-03-25 12:35:41,820 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:41,820 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 446 transitions, 22601 flow [2021-03-25 12:35:41,821 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 446 transitions, 22601 flow [2021-03-25 12:35:41,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 446 transitions, 22601 flow [2021-03-25 12:35:42,042 INFO L129 PetriNetUnfolder]: 348/1268 cut-off events. [2021-03-25 12:35:42,042 INFO L130 PetriNetUnfolder]: For 186274/187316 co-relation queries the response was YES. [2021-03-25 12:35:42,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21222 conditions, 1268 events. 348/1268 cut-off events. For 186274/187316 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11959 event pairs, 3 based on Foata normal form. 17/1168 useless extension candidates. Maximal degree in co-relation 21096. Up to 409 conditions per place. [2021-03-25 12:35:42,070 INFO L142 LiptonReduction]: Number of co-enabled transitions 2130 [2021-03-25 12:35:42,239 INFO L154 LiptonReduction]: Checked pairs total: 167 [2021-03-25 12:35:42,240 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:35:42,240 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 420 [2021-03-25 12:35:42,240 INFO L480 AbstractCegarLoop]: Abstraction has has 315 places, 446 transitions, 22621 flow [2021-03-25 12:35:42,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:42,240 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:42,240 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:42,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-03-25 12:35:42,441 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:42,441 INFO L82 PathProgramCache]: Analyzing trace with hash 953091514, now seen corresponding path program 1 times [2021-03-25 12:35:42,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:42,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386217931] [2021-03-25 12:35:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:42,454 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:42,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,459 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:35:42,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:42,467 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:42,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:42,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:42,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:42,488 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:35:42,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:42,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386217931] [2021-03-25 12:35:42,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053576515] [2021-03-25 12:35:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:42,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:42,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:42,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:42,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:42,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:42,554 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:35:42,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:42,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:42,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:42,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:42,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:42,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:42,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:42,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:42,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:42,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:42,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:42,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:42,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:42,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:42,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:42,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:42,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:42,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:42,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:42,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:42,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,584 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:42,584 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:42,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:42,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:42,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:42,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:42,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:42,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,600 INFO L147 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size 23 [2021-03-25 12:35:42,601 INFO L142 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size [2021-03-25 12:35:42,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:42,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:35:42,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:35:42,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:42,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-25 12:35:42,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:42,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:42,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:42,627 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.0 percent of original size [2021-03-25 12:35:42,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:35:42,637 INFO L147 QuantifierPusher]: treesize reduction -8, result has 102.8 percent of original size 291 [2021-03-25 12:35:42,639 INFO L142 QuantifierPusher]: treesize reduction -8, result has 102.8 percent of original size [2021-03-25 12:35:42,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-03-25 12:35:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:42,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:42,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:42,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492343064] [2021-03-25 12:35:42,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:42,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:42,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:42,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:42,722 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 356 [2021-03-25 12:35:42,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 446 transitions, 22621 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:42,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:42,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 356 [2021-03-25 12:35:42,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:43,908 INFO L129 PetriNetUnfolder]: 352/1284 cut-off events. [2021-03-25 12:35:43,908 INFO L130 PetriNetUnfolder]: For 193481/194882 co-relation queries the response was YES. [2021-03-25 12:35:43,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22166 conditions, 1284 events. 352/1284 cut-off events. For 193481/194882 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12086 event pairs, 3 based on Foata normal form. 42/1208 useless extension candidates. Maximal degree in co-relation 22038. Up to 612 conditions per place. [2021-03-25 12:35:43,928 INFO L132 encePairwiseOnDemand]: 304/356 looper letters, 367 selfloop transitions, 88 changer transitions 0/466 dead transitions. [2021-03-25 12:35:43,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 466 transitions, 24481 flow [2021-03-25 12:35:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 12:35:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 12:35:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1025 transitions. [2021-03-25 12:35:43,930 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28792134831460675 [2021-03-25 12:35:43,930 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1025 transitions. [2021-03-25 12:35:43,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1025 transitions. [2021-03-25 12:35:43,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:43,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1025 transitions. [2021-03-25 12:35:43,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.5) internal successors, (1025), 10 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:43,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 356.0) internal successors, (3916), 11 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:43,932 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 356.0) internal successors, (3916), 11 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:43,932 INFO L185 Difference]: Start difference. First operand has 315 places, 446 transitions, 22621 flow. Second operand 10 states and 1025 transitions. [2021-03-25 12:35:43,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 466 transitions, 24481 flow [2021-03-25 12:35:44,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 466 transitions, 24359 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-03-25 12:35:44,465 INFO L241 Difference]: Finished difference. Result has 323 places, 456 transitions, 23283 flow [2021-03-25 12:35:44,465 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=22499, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23283, PETRI_PLACES=323, PETRI_TRANSITIONS=456} [2021-03-25 12:35:44,465 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2021-03-25 12:35:44,465 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:44,465 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 456 transitions, 23283 flow [2021-03-25 12:35:44,465 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 456 transitions, 23283 flow [2021-03-25 12:35:44,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 323 places, 456 transitions, 23283 flow [2021-03-25 12:35:44,700 INFO L129 PetriNetUnfolder]: 352/1284 cut-off events. [2021-03-25 12:35:44,701 INFO L130 PetriNetUnfolder]: For 194414/195615 co-relation queries the response was YES. [2021-03-25 12:35:44,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21604 conditions, 1284 events. 352/1284 cut-off events. For 194414/195615 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12133 event pairs, 3 based on Foata normal form. 21/1182 useless extension candidates. Maximal degree in co-relation 21475. Up to 415 conditions per place. [2021-03-25 12:35:44,728 INFO L142 LiptonReduction]: Number of co-enabled transitions 2170 [2021-03-25 12:35:44,867 INFO L154 LiptonReduction]: Checked pairs total: 170 [2021-03-25 12:35:44,867 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:35:44,867 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 402 [2021-03-25 12:35:44,867 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 456 transitions, 23283 flow [2021-03-25 12:35:44,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:44,867 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:44,867 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:45,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:45,068 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:45,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1156610172, now seen corresponding path program 1 times [2021-03-25 12:35:45,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:45,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526488341] [2021-03-25 12:35:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:45,080 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:45,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,086 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:35:45,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:45,093 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:45,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,101 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:45,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:45,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:35:45,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:45,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526488341] [2021-03-25 12:35:45,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831023675] [2021-03-25 12:35:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:45,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:45,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:45,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:45,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:45,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:45,208 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:35:45,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:45,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:45,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:45,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:45,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:45,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:45,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:45,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:45,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:45,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:45,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:45,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:45,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:45,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:45,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:45,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:45,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:45,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:45,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:45,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:45,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:45,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:45,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:45,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:45,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:45,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,265 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:45,265 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:45,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:45,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:45,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:45,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:45,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:45,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:45,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:45,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:45,285 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:45,286 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:45,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:45,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:45,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:45,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524131358] [2021-03-25 12:35:45,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:45,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:45,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:45,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:45,302 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 357 [2021-03-25 12:35:45,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 456 transitions, 23283 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:45,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:45,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 357 [2021-03-25 12:35:45,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:46,297 INFO L129 PetriNetUnfolder]: 354/1288 cut-off events. [2021-03-25 12:35:46,298 INFO L130 PetriNetUnfolder]: For 193969/195371 co-relation queries the response was YES. [2021-03-25 12:35:46,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22426 conditions, 1288 events. 354/1288 cut-off events. For 193969/195371 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12143 event pairs, 3 based on Foata normal form. 43/1212 useless extension candidates. Maximal degree in co-relation 22295. Up to 619 conditions per place. [2021-03-25 12:35:46,322 INFO L132 encePairwiseOnDemand]: 305/357 looper letters, 374 selfloop transitions, 85 changer transitions 0/470 dead transitions. [2021-03-25 12:35:46,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 470 transitions, 24919 flow [2021-03-25 12:35:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:35:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:35:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 946 transitions. [2021-03-25 12:35:46,324 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29442888266417677 [2021-03-25 12:35:46,324 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 946 transitions. [2021-03-25 12:35:46,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 946 transitions. [2021-03-25 12:35:46,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:46,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 946 transitions. [2021-03-25 12:35:46,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.11111111111111) internal successors, (946), 9 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:46,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 357.0) internal successors, (3570), 10 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:46,327 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 357.0) internal successors, (3570), 10 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:46,327 INFO L185 Difference]: Start difference. First operand has 323 places, 456 transitions, 23283 flow. Second operand 9 states and 946 transitions. [2021-03-25 12:35:46,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 470 transitions, 24919 flow [2021-03-25 12:35:46,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 470 transitions, 24682 flow, removed 79 selfloop flow, removed 4 redundant places. [2021-03-25 12:35:46,829 INFO L241 Difference]: Finished difference. Result has 330 places, 460 transitions, 23547 flow [2021-03-25 12:35:46,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=23046, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23547, PETRI_PLACES=330, PETRI_TRANSITIONS=460} [2021-03-25 12:35:46,829 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2021-03-25 12:35:46,829 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:46,830 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 460 transitions, 23547 flow [2021-03-25 12:35:46,830 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 460 transitions, 23547 flow [2021-03-25 12:35:46,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 330 places, 460 transitions, 23547 flow [2021-03-25 12:35:47,118 INFO L129 PetriNetUnfolder]: 354/1286 cut-off events. [2021-03-25 12:35:47,118 INFO L130 PetriNetUnfolder]: For 194152/195206 co-relation queries the response was YES. [2021-03-25 12:35:47,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21808 conditions, 1286 events. 354/1286 cut-off events. For 194152/195206 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12164 event pairs, 3 based on Foata normal form. 25/1194 useless extension candidates. Maximal degree in co-relation 21676. Up to 412 conditions per place. [2021-03-25 12:35:47,155 INFO L142 LiptonReduction]: Number of co-enabled transitions 2188 [2021-03-25 12:35:47,329 INFO L154 LiptonReduction]: Checked pairs total: 344 [2021-03-25 12:35:47,330 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:35:47,330 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 501 [2021-03-25 12:35:47,330 INFO L480 AbstractCegarLoop]: Abstraction has has 330 places, 460 transitions, 23547 flow [2021-03-25 12:35:47,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:47,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:47,330 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:47,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-03-25 12:35:47,531 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:47,531 INFO L82 PathProgramCache]: Analyzing trace with hash 777104762, now seen corresponding path program 1 times [2021-03-25 12:35:47,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:47,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413010401] [2021-03-25 12:35:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:47,541 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:47,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,546 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:35:47,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:47,553 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:47,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:47,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:47,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:47,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:35:47,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:47,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413010401] [2021-03-25 12:35:47,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966626161] [2021-03-25 12:35:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:47,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:47,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:47,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:47,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:47,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:47,634 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:35:47,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:47,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:47,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:47,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:47,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:47,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:47,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:47,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:47,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:47,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:47,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:47,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:47,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:47,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:47,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:47,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:47,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:47,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:47,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:47,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:47,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,663 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:47,664 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:47,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:47,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:47,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:47,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:35:47,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:47,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:47,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:35:47,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:35:47,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:35:47,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:47,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:35:47,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:35:47,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:47,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:35:47,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:35:47,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:47,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:47,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:47,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:47,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:47,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86637172] [2021-03-25 12:35:47,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:47,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:47,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:47,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:47,709 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 359 [2021-03-25 12:35:47,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 460 transitions, 23547 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:47,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:47,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 359 [2021-03-25 12:35:47,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:48,988 INFO L129 PetriNetUnfolder]: 357/1304 cut-off events. [2021-03-25 12:35:48,988 INFO L130 PetriNetUnfolder]: For 201837/203239 co-relation queries the response was YES. [2021-03-25 12:35:49,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22791 conditions, 1304 events. 357/1304 cut-off events. For 201837/203239 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12348 event pairs, 3 based on Foata normal form. 42/1223 useless extension candidates. Maximal degree in co-relation 22657. Up to 617 conditions per place. [2021-03-25 12:35:49,011 INFO L132 encePairwiseOnDemand]: 304/359 looper letters, 370 selfloop transitions, 93 changer transitions 0/474 dead transitions. [2021-03-25 12:35:49,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 474 transitions, 25316 flow [2021-03-25 12:35:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 12:35:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 12:35:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1111 transitions. [2021-03-25 12:35:49,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28133704735376047 [2021-03-25 12:35:49,012 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1111 transitions. [2021-03-25 12:35:49,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1111 transitions. [2021-03-25 12:35:49,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:49,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1111 transitions. [2021-03-25 12:35:49,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 101.0) internal successors, (1111), 11 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:49,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 359.0) internal successors, (4308), 12 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:49,015 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 359.0) internal successors, (4308), 12 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:49,015 INFO L185 Difference]: Start difference. First operand has 330 places, 460 transitions, 23547 flow. Second operand 11 states and 1111 transitions. [2021-03-25 12:35:49,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 474 transitions, 25316 flow [2021-03-25 12:35:49,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 474 transitions, 25185 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-03-25 12:35:49,586 INFO L241 Difference]: Finished difference. Result has 338 places, 464 transitions, 24061 flow [2021-03-25 12:35:49,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=23417, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24061, PETRI_PLACES=338, PETRI_TRANSITIONS=464} [2021-03-25 12:35:49,587 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2021-03-25 12:35:49,587 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:49,587 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 338 places, 464 transitions, 24061 flow [2021-03-25 12:35:49,587 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 338 places, 464 transitions, 24061 flow [2021-03-25 12:35:49,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 338 places, 464 transitions, 24061 flow [2021-03-25 12:35:49,878 INFO L129 PetriNetUnfolder]: 357/1298 cut-off events. [2021-03-25 12:35:49,878 INFO L130 PetriNetUnfolder]: For 201412/202501 co-relation queries the response was YES. [2021-03-25 12:35:49,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22189 conditions, 1298 events. 357/1298 cut-off events. For 201412/202501 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 12323 event pairs, 3 based on Foata normal form. 26/1204 useless extension candidates. Maximal degree in co-relation 22055. Up to 418 conditions per place. [2021-03-25 12:35:49,909 INFO L142 LiptonReduction]: Number of co-enabled transitions 2204 [2021-03-25 12:35:50,106 INFO L154 LiptonReduction]: Checked pairs total: 176 [2021-03-25 12:35:50,107 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:35:50,107 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 520 [2021-03-25 12:35:50,107 INFO L480 AbstractCegarLoop]: Abstraction has has 338 places, 464 transitions, 24090 flow [2021-03-25 12:35:50,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:50,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:50,107 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:50,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:50,308 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:50,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:50,308 INFO L82 PathProgramCache]: Analyzing trace with hash 777034361, now seen corresponding path program 1 times [2021-03-25 12:35:50,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:50,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317694447] [2021-03-25 12:35:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:50,318 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:50,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,335 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:35:50,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:50,341 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:50,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:50,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:50,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:50,361 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:35:50,362 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:35:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:50,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317694447] [2021-03-25 12:35:50,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46554331] [2021-03-25 12:35:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:50,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:50,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:50,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:50,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:50,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:50,427 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:35:50,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:50,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:50,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:50,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:50,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:50,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:50,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:50,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:50,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:50,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:50,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:50,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:50,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:50,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:50,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:50,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:50,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:50,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:50,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:50,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:50,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,464 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:50,464 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:50,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:50,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:50,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:50,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:50,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:50,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:50,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:50,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,495 INFO L147 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size 23 [2021-03-25 12:35:50,495 INFO L142 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size [2021-03-25 12:35:50,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:50,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:50,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:35:50,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:35:50,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:50,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:50,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-25 12:35:50,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:50,525 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.0 percent of original size 21 [2021-03-25 12:35:50,526 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.0 percent of original size [2021-03-25 12:35:50,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:50,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:50,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:50,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474135214] [2021-03-25 12:35:50,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:50,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:50,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:50,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:50,543 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 361 [2021-03-25 12:35:50,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 464 transitions, 24090 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:50,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:50,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 361 [2021-03-25 12:35:50,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:51,873 INFO L129 PetriNetUnfolder]: 362/1324 cut-off events. [2021-03-25 12:35:51,874 INFO L130 PetriNetUnfolder]: For 209445/210755 co-relation queries the response was YES. [2021-03-25 12:35:51,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23326 conditions, 1324 events. 362/1324 cut-off events. For 209445/210755 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12573 event pairs, 3 based on Foata normal form. 19/1218 useless extension candidates. Maximal degree in co-relation 23190. Up to 609 conditions per place. [2021-03-25 12:35:51,897 INFO L132 encePairwiseOnDemand]: 297/361 looper letters, 361 selfloop transitions, 111 changer transitions 0/483 dead transitions. [2021-03-25 12:35:51,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 483 transitions, 26041 flow [2021-03-25 12:35:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 12:35:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 12:35:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1116 transitions. [2021-03-25 12:35:51,899 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28103752203475196 [2021-03-25 12:35:51,899 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1116 transitions. [2021-03-25 12:35:51,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1116 transitions. [2021-03-25 12:35:51,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:51,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1116 transitions. [2021-03-25 12:35:51,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 101.45454545454545) internal successors, (1116), 11 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:51,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 361.0) internal successors, (4332), 12 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:51,901 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 361.0) internal successors, (4332), 12 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:51,901 INFO L185 Difference]: Start difference. First operand has 338 places, 464 transitions, 24090 flow. Second operand 11 states and 1116 transitions. [2021-03-25 12:35:51,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 483 transitions, 26041 flow [2021-03-25 12:35:52,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 483 transitions, 25804 flow, removed 68 selfloop flow, removed 7 redundant places. [2021-03-25 12:35:52,452 INFO L241 Difference]: Finished difference. Result has 344 places, 471 transitions, 24680 flow [2021-03-25 12:35:52,453 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=23854, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24680, PETRI_PLACES=344, PETRI_TRANSITIONS=471} [2021-03-25 12:35:52,453 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2021-03-25 12:35:52,453 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:52,453 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 471 transitions, 24680 flow [2021-03-25 12:35:52,453 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 471 transitions, 24680 flow [2021-03-25 12:35:52,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 344 places, 471 transitions, 24680 flow [2021-03-25 12:35:52,705 INFO L129 PetriNetUnfolder]: 362/1324 cut-off events. [2021-03-25 12:35:52,705 INFO L130 PetriNetUnfolder]: For 208909/209969 co-relation queries the response was YES. [2021-03-25 12:35:52,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22714 conditions, 1324 events. 362/1324 cut-off events. For 208909/209969 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 12673 event pairs, 3 based on Foata normal form. 30/1230 useless extension candidates. Maximal degree in co-relation 22577. Up to 426 conditions per place. [2021-03-25 12:35:52,791 INFO L142 LiptonReduction]: Number of co-enabled transitions 2232 [2021-03-25 12:35:53,009 INFO L154 LiptonReduction]: Checked pairs total: 353 [2021-03-25 12:35:53,009 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:35:53,009 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 556 [2021-03-25 12:35:53,010 INFO L480 AbstractCegarLoop]: Abstraction has has 344 places, 471 transitions, 24704 flow [2021-03-25 12:35:53,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:53,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:53,010 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:53,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-03-25 12:35:53,212 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:53,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:53,212 INFO L82 PathProgramCache]: Analyzing trace with hash 574647001, now seen corresponding path program 1 times [2021-03-25 12:35:53,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:53,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507799877] [2021-03-25 12:35:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:53,234 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:53,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,240 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:35:53,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,246 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:35:53,247 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:35:53,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:53,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:53,274 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 12:35:53,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:53,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507799877] [2021-03-25 12:35:53,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574448860] [2021-03-25 12:35:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:53,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:53,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:53,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:53,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:53,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:53,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:53,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:53,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:53,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:53,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:53,358 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 12:35:53,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:35:53,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:35:53,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:53,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:53,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:53,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:53,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:53,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:53,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,388 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:53,388 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:53,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:53,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:53,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:53,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:53,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:53,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:53,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:53,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,409 INFO L147 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size 23 [2021-03-25 12:35:53,410 INFO L142 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size [2021-03-25 12:35:53,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:53,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:53,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 12:35:53,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-25 12:35:53,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:53,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 12:35:53,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-25 12:35:53,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:53,439 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.3 percent of original size 40 [2021-03-25 12:35:53,440 INFO L142 QuantifierPusher]: treesize reduction -2, result has 105.3 percent of original size [2021-03-25 12:35:53,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-25 12:35:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:53,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:53,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-25 12:35:53,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897262557] [2021-03-25 12:35:53,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 12:35:53,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:53,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 12:35:53,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-03-25 12:35:53,452 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 364 [2021-03-25 12:35:53,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 471 transitions, 24704 flow. Second operand has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:53,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:53,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 364 [2021-03-25 12:35:53,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:55,037 INFO L129 PetriNetUnfolder]: 367/1343 cut-off events. [2021-03-25 12:35:55,038 INFO L130 PetriNetUnfolder]: For 216933/218337 co-relation queries the response was YES. [2021-03-25 12:35:55,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23878 conditions, 1343 events. 367/1343 cut-off events. For 216933/218337 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 12825 event pairs, 3 based on Foata normal form. 66/1283 useless extension candidates. Maximal degree in co-relation 23739. Up to 498 conditions per place. [2021-03-25 12:35:55,062 INFO L132 encePairwiseOnDemand]: 253/364 looper letters, 259 selfloop transitions, 222 changer transitions 0/492 dead transitions. [2021-03-25 12:35:55,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 492 transitions, 26742 flow [2021-03-25 12:35:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 12:35:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 12:35:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1216 transitions. [2021-03-25 12:35:55,063 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2783882783882784 [2021-03-25 12:35:55,064 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1216 transitions. [2021-03-25 12:35:55,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1216 transitions. [2021-03-25 12:35:55,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:55,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1216 transitions. [2021-03-25 12:35:55,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.33333333333333) internal successors, (1216), 12 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:55,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 364.0) internal successors, (4732), 13 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:55,067 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 364.0) internal successors, (4732), 13 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:55,067 INFO L185 Difference]: Start difference. First operand has 344 places, 471 transitions, 24704 flow. Second operand 12 states and 1216 transitions. [2021-03-25 12:35:55,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 492 transitions, 26742 flow [2021-03-25 12:35:55,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 492 transitions, 26577 flow, removed 24 selfloop flow, removed 7 redundant places. [2021-03-25 12:35:55,717 INFO L241 Difference]: Finished difference. Result has 352 places, 484 transitions, 25941 flow [2021-03-25 12:35:55,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=24540, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=25941, PETRI_PLACES=352, PETRI_TRANSITIONS=484} [2021-03-25 12:35:55,718 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2021-03-25 12:35:55,718 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:55,718 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 484 transitions, 25941 flow [2021-03-25 12:35:55,718 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 484 transitions, 25941 flow [2021-03-25 12:35:55,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 352 places, 484 transitions, 25941 flow [2021-03-25 12:35:56,008 INFO L129 PetriNetUnfolder]: 367/1343 cut-off events. [2021-03-25 12:35:56,008 INFO L130 PetriNetUnfolder]: For 219939/221255 co-relation queries the response was YES. [2021-03-25 12:35:56,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23551 conditions, 1343 events. 367/1343 cut-off events. For 219939/221255 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12876 event pairs, 3 based on Foata normal form. 24/1242 useless extension candidates. Maximal degree in co-relation 23410. Up to 436 conditions per place. [2021-03-25 12:35:56,042 INFO L142 LiptonReduction]: Number of co-enabled transitions 2276 [2021-03-25 12:35:56,243 INFO L154 LiptonReduction]: Checked pairs total: 677 [2021-03-25 12:35:56,243 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:35:56,243 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 525 [2021-03-25 12:35:56,243 INFO L480 AbstractCegarLoop]: Abstraction has has 352 places, 484 transitions, 25945 flow [2021-03-25 12:35:56,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:56,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:56,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:56,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:56,444 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:56,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:56,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2143514983, now seen corresponding path program 1 times [2021-03-25 12:35:56,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:56,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639205129] [2021-03-25 12:35:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:56,475 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:56,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,481 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:35:56,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:56,488 INFO L142 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-03-25 12:35:56,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,497 INFO L142 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-03-25 12:35:56,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:56,516 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:35:56,516 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:35:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:56,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639205129] [2021-03-25 12:35:56,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359265920] [2021-03-25 12:35:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:56,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:56,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:56,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:56,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:56,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:56,594 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:35:56,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:56,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:56,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:56,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:56,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:56,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:56,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:56,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:56,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:56,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:56,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:56,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:56,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:56,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:56,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:56,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:56,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:56,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:56,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:56,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:56,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:56,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,639 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:56,639 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:56,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:56,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:56,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:56,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:35:56,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:56,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:56,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:56,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:56,657 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:56,657 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:56,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:56,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:56,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:56,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331061720] [2021-03-25 12:35:56,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:56,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:56,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:56,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:56,673 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 367 [2021-03-25 12:35:56,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 484 transitions, 25945 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:56,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:56,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 367 [2021-03-25 12:35:56,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:35:57,980 INFO L129 PetriNetUnfolder]: 371/1359 cut-off events. [2021-03-25 12:35:57,980 INFO L130 PetriNetUnfolder]: For 222028/223594 co-relation queries the response was YES. [2021-03-25 12:35:57,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24658 conditions, 1359 events. 371/1359 cut-off events. For 222028/223594 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 12999 event pairs, 3 based on Foata normal form. 42/1272 useless extension candidates. Maximal degree in co-relation 24515. Up to 658 conditions per place. [2021-03-25 12:35:58,005 INFO L132 encePairwiseOnDemand]: 316/367 looper letters, 404 selfloop transitions, 82 changer transitions 0/497 dead transitions. [2021-03-25 12:35:58,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 497 transitions, 27748 flow [2021-03-25 12:35:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:35:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:35:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 956 transitions. [2021-03-25 12:35:58,007 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28943384801695426 [2021-03-25 12:35:58,007 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 956 transitions. [2021-03-25 12:35:58,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 956 transitions. [2021-03-25 12:35:58,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:35:58,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 956 transitions. [2021-03-25 12:35:58,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.22222222222223) internal successors, (956), 9 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:58,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:58,010 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:58,010 INFO L185 Difference]: Start difference. First operand has 352 places, 484 transitions, 25945 flow. Second operand 9 states and 956 transitions. [2021-03-25 12:35:58,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 497 transitions, 27748 flow [2021-03-25 12:35:58,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 497 transitions, 27421 flow, removed 91 selfloop flow, removed 4 redundant places. [2021-03-25 12:35:58,667 INFO L241 Difference]: Finished difference. Result has 358 places, 489 transitions, 26385 flow [2021-03-25 12:35:58,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=25647, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26385, PETRI_PLACES=358, PETRI_TRANSITIONS=489} [2021-03-25 12:35:58,668 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2021-03-25 12:35:58,668 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:35:58,668 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 358 places, 489 transitions, 26385 flow [2021-03-25 12:35:58,668 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 358 places, 489 transitions, 26385 flow [2021-03-25 12:35:58,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 358 places, 489 transitions, 26385 flow [2021-03-25 12:35:58,950 INFO L129 PetriNetUnfolder]: 371/1357 cut-off events. [2021-03-25 12:35:58,950 INFO L130 PetriNetUnfolder]: For 225545/226597 co-relation queries the response was YES. [2021-03-25 12:35:58,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23939 conditions, 1357 events. 371/1357 cut-off events. For 225545/226597 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13061 event pairs, 3 based on Foata normal form. 22/1252 useless extension candidates. Maximal degree in co-relation 23796. Up to 422 conditions per place. [2021-03-25 12:35:58,986 INFO L142 LiptonReduction]: Number of co-enabled transitions 2296 [2021-03-25 12:35:59,198 INFO L154 LiptonReduction]: Checked pairs total: 184 [2021-03-25 12:35:59,198 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:35:59,198 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 530 [2021-03-25 12:35:59,199 INFO L480 AbstractCegarLoop]: Abstraction has has 358 places, 489 transitions, 26419 flow [2021-03-25 12:35:59,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:59,199 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:35:59,199 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:35:59,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-03-25 12:35:59,399 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:35:59,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:35:59,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1164046142, now seen corresponding path program 1 times [2021-03-25 12:35:59,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:35:59,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33746731] [2021-03-25 12:35:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:35:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:59,412 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:35:59,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,417 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:35:59,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:59,424 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:59,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,432 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:35:59,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:35:59,450 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:35:59,450 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:35:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:59,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33746731] [2021-03-25 12:35:59,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149066014] [2021-03-25 12:35:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:35:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:35:59,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:35:59,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:35:59,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:35:59,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:59,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:59,556 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:35:59,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:59,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:59,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:59,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:59,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:59,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:35:59,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:59,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:59,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:59,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:59,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:35:59,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:35:59,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:59,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:59,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:59,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:59,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:35:59,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:35:59,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:35:59,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:59,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:59,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:59,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:59,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:35:59,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:35:59,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,612 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:35:59,613 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:35:59,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:35:59,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:59,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:59,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:59,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:35:59,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:35:59,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:35:59,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:35:59,636 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:35:59,637 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:35:59,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:35:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:35:59,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:35:59,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:35:59,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210850332] [2021-03-25 12:35:59,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:35:59,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:35:59,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:35:59,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:35:59,653 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 369 [2021-03-25 12:35:59,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 489 transitions, 26419 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:35:59,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:35:59,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 369 [2021-03-25 12:35:59,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:36:00,902 INFO L129 PetriNetUnfolder]: 374/1371 cut-off events. [2021-03-25 12:36:00,903 INFO L130 PetriNetUnfolder]: For 231139/232543 co-relation queries the response was YES. [2021-03-25 12:36:00,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24983 conditions, 1371 events. 374/1371 cut-off events. For 231139/232543 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13178 event pairs, 3 based on Foata normal form. 43/1283 useless extension candidates. Maximal degree in co-relation 24838. Up to 648 conditions per place. [2021-03-25 12:36:00,927 INFO L132 encePairwiseOnDemand]: 311/369 looper letters, 393 selfloop transitions, 97 changer transitions 0/501 dead transitions. [2021-03-25 12:36:00,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 501 transitions, 28117 flow [2021-03-25 12:36:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:36:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:36:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 958 transitions. [2021-03-25 12:36:00,929 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28846732911773565 [2021-03-25 12:36:00,929 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 958 transitions. [2021-03-25 12:36:00,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 958 transitions. [2021-03-25 12:36:00,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:36:00,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 958 transitions. [2021-03-25 12:36:00,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.44444444444444) internal successors, (958), 9 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:00,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:00,931 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:00,931 INFO L185 Difference]: Start difference. First operand has 358 places, 489 transitions, 26419 flow. Second operand 9 states and 958 transitions. [2021-03-25 12:36:00,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 501 transitions, 28117 flow [2021-03-25 12:36:01,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 501 transitions, 27988 flow, removed 52 selfloop flow, removed 2 redundant places. [2021-03-25 12:36:01,619 INFO L241 Difference]: Finished difference. Result has 367 places, 493 transitions, 26919 flow [2021-03-25 12:36:01,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=26290, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26919, PETRI_PLACES=367, PETRI_TRANSITIONS=493} [2021-03-25 12:36:01,620 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2021-03-25 12:36:01,620 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:36:01,620 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 493 transitions, 26919 flow [2021-03-25 12:36:01,620 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 493 transitions, 26919 flow [2021-03-25 12:36:01,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 367 places, 493 transitions, 26919 flow [2021-03-25 12:36:01,910 INFO L129 PetriNetUnfolder]: 374/1371 cut-off events. [2021-03-25 12:36:01,910 INFO L130 PetriNetUnfolder]: For 236474/237535 co-relation queries the response was YES. [2021-03-25 12:36:01,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24480 conditions, 1371 events. 374/1371 cut-off events. For 236474/237535 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13250 event pairs, 3 based on Foata normal form. 30/1271 useless extension candidates. Maximal degree in co-relation 24333. Up to 426 conditions per place. [2021-03-25 12:36:01,946 INFO L142 LiptonReduction]: Number of co-enabled transitions 2314 [2021-03-25 12:36:02,118 INFO L154 LiptonReduction]: Checked pairs total: 183 [2021-03-25 12:36:02,118 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:36:02,118 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 498 [2021-03-25 12:36:02,119 INFO L480 AbstractCegarLoop]: Abstraction has has 367 places, 493 transitions, 26919 flow [2021-03-25 12:36:02,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:02,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:36:02,119 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:36:02,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:02,324 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:36:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:36:02,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1637017727, now seen corresponding path program 1 times [2021-03-25 12:36:02,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:36:02,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33256030] [2021-03-25 12:36:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:36:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:02,335 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:36:02,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,340 INFO L142 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-03-25 12:36:02,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:36:02,346 INFO L142 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-03-25 12:36:02,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,354 INFO L142 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-03-25 12:36:02,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:02,370 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:36:02,371 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:36:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:02,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33256030] [2021-03-25 12:36:02,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863339780] [2021-03-25 12:36:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:02,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:36:02,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:36:02,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:02,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:02,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:02,455 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 12:36:02,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:36:02,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:36:02,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:36:02,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:36:02,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:36:02,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 12:36:02,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:02,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:02,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:02,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:02,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:02,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:02,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:02,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:02,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:36:02,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:02,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:02,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:36:02,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:02,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:02,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:02,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:02,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:02,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:02,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:02,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,512 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:36:02,512 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:36:02,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:36:02,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:02,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:02,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:36:02,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:02,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:02,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:02,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:02,536 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:36:02,536 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:36:02,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:36:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:02,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:36:02,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:36:02,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084298098] [2021-03-25 12:36:02,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:36:02,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:36:02,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:36:02,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:36:02,552 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 370 [2021-03-25 12:36:02,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 493 transitions, 26919 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:02,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:36:02,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 370 [2021-03-25 12:36:02,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:36:04,047 INFO L129 PetriNetUnfolder]: 377/1383 cut-off events. [2021-03-25 12:36:04,047 INFO L130 PetriNetUnfolder]: For 241002/242406 co-relation queries the response was YES. [2021-03-25 12:36:04,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25499 conditions, 1383 events. 377/1383 cut-off events. For 241002/242406 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13297 event pairs, 3 based on Foata normal form. 42/1293 useless extension candidates. Maximal degree in co-relation 25350. Up to 665 conditions per place. [2021-03-25 12:36:04,082 INFO L132 encePairwiseOnDemand]: 318/370 looper letters, 408 selfloop transitions, 87 changer transitions 0/506 dead transitions. [2021-03-25 12:36:04,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 506 transitions, 28660 flow [2021-03-25 12:36:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 12:36:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 12:36:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 960 transitions. [2021-03-25 12:36:04,134 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2882882882882883 [2021-03-25 12:36:04,134 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 960 transitions. [2021-03-25 12:36:04,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 960 transitions. [2021-03-25 12:36:04,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:36:04,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 960 transitions. [2021-03-25 12:36:04,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.66666666666667) internal successors, (960), 9 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:04,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 370.0) internal successors, (3700), 10 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:04,137 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 370.0) internal successors, (3700), 10 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:04,137 INFO L185 Difference]: Start difference. First operand has 367 places, 493 transitions, 26919 flow. Second operand 9 states and 960 transitions. [2021-03-25 12:36:04,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 506 transitions, 28660 flow [2021-03-25 12:36:04,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 506 transitions, 28468 flow, removed 49 selfloop flow, removed 4 redundant places. [2021-03-25 12:36:04,890 INFO L241 Difference]: Finished difference. Result has 374 places, 498 transitions, 27436 flow [2021-03-25 12:36:04,891 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=26728, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27436, PETRI_PLACES=374, PETRI_TRANSITIONS=498} [2021-03-25 12:36:04,891 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2021-03-25 12:36:04,891 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:36:04,891 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 498 transitions, 27436 flow [2021-03-25 12:36:04,891 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 498 transitions, 27436 flow [2021-03-25 12:36:04,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 374 places, 498 transitions, 27436 flow [2021-03-25 12:36:05,189 INFO L129 PetriNetUnfolder]: 377/1387 cut-off events. [2021-03-25 12:36:05,190 INFO L130 PetriNetUnfolder]: For 245836/246926 co-relation queries the response was YES. [2021-03-25 12:36:05,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24915 conditions, 1387 events. 377/1387 cut-off events. For 245836/246926 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13465 event pairs, 3 based on Foata normal form. 34/1288 useless extension candidates. Maximal degree in co-relation 24765. Up to 431 conditions per place. [2021-03-25 12:36:05,226 INFO L142 LiptonReduction]: Number of co-enabled transitions 2336 [2021-03-25 12:36:05,421 INFO L154 LiptonReduction]: Checked pairs total: 511 [2021-03-25 12:36:05,421 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 12:36:05,422 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 531 [2021-03-25 12:36:05,422 INFO L480 AbstractCegarLoop]: Abstraction has has 374 places, 498 transitions, 27440 flow [2021-03-25 12:36:05,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:05,422 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:36:05,422 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:36:05,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:05,623 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:36:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:36:05,623 INFO L82 PathProgramCache]: Analyzing trace with hash 273087612, now seen corresponding path program 1 times [2021-03-25 12:36:05,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:36:05,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092959173] [2021-03-25 12:36:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:36:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:05,636 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:36:05,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,641 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:36:05,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,647 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 12:36:05,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,654 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 12:36:05,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:05,662 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:36:05,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:05,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092959173] [2021-03-25 12:36:05,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221328193] [2021-03-25 12:36:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:05,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:36:05,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:36:05,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:05,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:05,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:05,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:05,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:05,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:05,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:05,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:36:05,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:05,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:05,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:36:05,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,756 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 12:36:05,757 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 12:36:05,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:05,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:05,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:05,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:36:05,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:05,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:05,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:36:05,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,771 INFO L147 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size 20 [2021-03-25 12:36:05,772 INFO L142 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size [2021-03-25 12:36:05,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:36:05,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:05,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:36:05,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 12:36:05,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:05,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:36:05,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 12:36:05,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:05,791 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.0 percent of original size 21 [2021-03-25 12:36:05,791 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.0 percent of original size [2021-03-25 12:36:05,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:05,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:36:05,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 12:36:05,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375853671] [2021-03-25 12:36:05,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 12:36:05,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:36:05,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 12:36:05,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-25 12:36:05,810 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 372 [2021-03-25 12:36:05,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 498 transitions, 27440 flow. Second operand has 12 states, 12 states have (on average 86.0) internal successors, (1032), 12 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:05,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:36:05,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 372 [2021-03-25 12:36:05,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:36:07,582 INFO L129 PetriNetUnfolder]: 411/1502 cut-off events. [2021-03-25 12:36:07,582 INFO L130 PetriNetUnfolder]: For 280996/282406 co-relation queries the response was YES. [2021-03-25 12:36:07,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28312 conditions, 1502 events. 411/1502 cut-off events. For 280996/282406 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 14668 event pairs, 2 based on Foata normal form. 100/1459 useless extension candidates. Maximal degree in co-relation 28160. Up to 608 conditions per place. [2021-03-25 12:36:07,612 INFO L132 encePairwiseOnDemand]: 170/372 looper letters, 240 selfloop transitions, 290 changer transitions 0/541 dead transitions. [2021-03-25 12:36:07,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 541 transitions, 31164 flow [2021-03-25 12:36:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 12:36:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 12:36:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1447 transitions. [2021-03-25 12:36:07,614 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2992142266335815 [2021-03-25 12:36:07,614 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1447 transitions. [2021-03-25 12:36:07,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1447 transitions. [2021-03-25 12:36:07,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:36:07,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1447 transitions. [2021-03-25 12:36:07,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 111.3076923076923) internal successors, (1447), 13 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:07,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 372.0) internal successors, (5208), 14 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:07,618 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 372.0) internal successors, (5208), 14 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:07,618 INFO L185 Difference]: Start difference. First operand has 374 places, 498 transitions, 27440 flow. Second operand 13 states and 1447 transitions. [2021-03-25 12:36:07,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 541 transitions, 31164 flow [2021-03-25 12:36:08,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 541 transitions, 30959 flow, removed 58 selfloop flow, removed 4 redundant places. [2021-03-25 12:36:08,454 INFO L241 Difference]: Finished difference. Result has 385 places, 539 transitions, 30582 flow [2021-03-25 12:36:08,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=27241, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=30582, PETRI_PLACES=385, PETRI_TRANSITIONS=539} [2021-03-25 12:36:08,454 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2021-03-25 12:36:08,455 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:36:08,455 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 385 places, 539 transitions, 30582 flow [2021-03-25 12:36:08,455 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 385 places, 539 transitions, 30582 flow [2021-03-25 12:36:08,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 385 places, 539 transitions, 30582 flow [2021-03-25 12:36:08,813 INFO L129 PetriNetUnfolder]: 411/1508 cut-off events. [2021-03-25 12:36:08,813 INFO L130 PetriNetUnfolder]: For 291080/292402 co-relation queries the response was YES. [2021-03-25 12:36:08,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28050 conditions, 1508 events. 411/1508 cut-off events. For 291080/292402 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 14831 event pairs, 3 based on Foata normal form. 31/1388 useless extension candidates. Maximal degree in co-relation 27897. Up to 477 conditions per place. [2021-03-25 12:36:08,854 INFO L142 LiptonReduction]: Number of co-enabled transitions 2502 [2021-03-25 12:36:09,284 INFO L154 LiptonReduction]: Checked pairs total: 2157 [2021-03-25 12:36:09,284 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 12:36:09,284 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 829 [2021-03-25 12:36:09,284 INFO L480 AbstractCegarLoop]: Abstraction has has 385 places, 539 transitions, 30602 flow [2021-03-25 12:36:09,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 86.0) internal successors, (1032), 12 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:09,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:36:09,285 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:36:09,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-03-25 12:36:09,485 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:36:09,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:36:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash -498984378, now seen corresponding path program 1 times [2021-03-25 12:36:09,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:36:09,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956424669] [2021-03-25 12:36:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:36:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:09,495 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:36:09,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,500 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 12:36:09,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:09,507 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-03-25 12:36:09,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:36:09,514 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:36:09,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:09,527 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:36:09,528 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:36:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:09,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956424669] [2021-03-25 12:36:09,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309711398] [2021-03-25 12:36:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:09,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:36:09,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:36:09,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:09,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:09,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:09,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:09,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:09,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:09,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:09,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:36:09,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:36:09,615 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 12:36:09,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:36:09,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:36:09,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:09,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:09,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:09,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:09,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:09,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:09,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:09,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:09,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:09,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:09,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:09,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:09,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,644 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:36:09,644 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:36:09,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:36:09,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:09,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:09,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:09,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:09,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:09,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:09,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:09,661 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:36:09,662 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:36:09,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:36:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:09,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:36:09,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:36:09,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62575541] [2021-03-25 12:36:09,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:36:09,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:36:09,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:36:09,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:36:09,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 379 [2021-03-25 12:36:09,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 539 transitions, 30602 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:09,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:36:09,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 379 [2021-03-25 12:36:09,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:36:11,432 INFO L129 PetriNetUnfolder]: 411/1507 cut-off events. [2021-03-25 12:36:11,432 INFO L130 PetriNetUnfolder]: For 284766/286232 co-relation queries the response was YES. [2021-03-25 12:36:11,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28951 conditions, 1507 events. 411/1507 cut-off events. For 284766/286232 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 14764 event pairs, 2 based on Foata normal form. 44/1407 useless extension candidates. Maximal degree in co-relation 28796. Up to 720 conditions per place. [2021-03-25 12:36:11,462 INFO L132 encePairwiseOnDemand]: 321/379 looper letters, 443 selfloop transitions, 99 changer transitions 0/553 dead transitions. [2021-03-25 12:36:11,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 553 transitions, 32536 flow [2021-03-25 12:36:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 12:36:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 12:36:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1198 transitions. [2021-03-25 12:36:11,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.26341248900615655 [2021-03-25 12:36:11,464 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1198 transitions. [2021-03-25 12:36:11,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1198 transitions. [2021-03-25 12:36:11,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:36:11,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1198 transitions. [2021-03-25 12:36:11,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 99.83333333333333) internal successors, (1198), 12 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:11,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 379.0) internal successors, (4927), 13 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:11,467 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 379.0) internal successors, (4927), 13 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:11,467 INFO L185 Difference]: Start difference. First operand has 385 places, 539 transitions, 30602 flow. Second operand 12 states and 1198 transitions. [2021-03-25 12:36:11,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 553 transitions, 32536 flow [2021-03-25 12:36:12,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 553 transitions, 32007 flow, removed 227 selfloop flow, removed 4 redundant places. [2021-03-25 12:36:12,342 INFO L241 Difference]: Finished difference. Result has 393 places, 541 transitions, 30557 flow [2021-03-25 12:36:12,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=30085, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=30557, PETRI_PLACES=393, PETRI_TRANSITIONS=541} [2021-03-25 12:36:12,342 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2021-03-25 12:36:12,343 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:36:12,343 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 393 places, 541 transitions, 30557 flow [2021-03-25 12:36:12,343 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 393 places, 541 transitions, 30557 flow [2021-03-25 12:36:12,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 393 places, 541 transitions, 30557 flow [2021-03-25 12:36:12,686 INFO L129 PetriNetUnfolder]: 411/1511 cut-off events. [2021-03-25 12:36:12,686 INFO L130 PetriNetUnfolder]: For 287821/289207 co-relation queries the response was YES. [2021-03-25 12:36:12,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27895 conditions, 1511 events. 411/1511 cut-off events. For 287821/289207 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14925 event pairs, 2 based on Foata normal form. 66/1426 useless extension candidates. Maximal degree in co-relation 27740. Up to 471 conditions per place. [2021-03-25 12:36:12,727 INFO L142 LiptonReduction]: Number of co-enabled transitions 2510 [2021-03-25 12:36:13,023 INFO L154 LiptonReduction]: Checked pairs total: 405 [2021-03-25 12:36:13,023 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:36:13,023 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 680 [2021-03-25 12:36:13,023 INFO L480 AbstractCegarLoop]: Abstraction has has 393 places, 541 transitions, 30580 flow [2021-03-25 12:36:13,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:13,023 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:36:13,023 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:36:13,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:13,224 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:36:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:36:13,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1197318760, now seen corresponding path program 1 times [2021-03-25 12:36:13,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:36:13,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257037669] [2021-03-25 12:36:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:36:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:13,237 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:36:13,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,242 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:36:13,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,248 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:36:13,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,256 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 12:36:13,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:13,264 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 12:36:13,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:13,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257037669] [2021-03-25 12:36:13,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976689730] [2021-03-25 12:36:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:13,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:36:13,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:36:13,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:13,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:13,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:13,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:13,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:13,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:13,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:36:13,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:36:13,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:13,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:36:13,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:36:13,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:13,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:13,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:13,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:36:13,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:13,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:13,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:36:13,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,365 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 12:36:13,365 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 12:36:13,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:13,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:13,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:13,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:36:13,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:13,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:13,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 12:36:13,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:13,380 INFO L147 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size 20 [2021-03-25 12:36:13,381 INFO L142 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size [2021-03-25 12:36:13,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:36:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:13,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:36:13,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 12:36:13,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846936347] [2021-03-25 12:36:13,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 12:36:13,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:36:13,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 12:36:13,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-03-25 12:36:13,395 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 382 [2021-03-25 12:36:13,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 541 transitions, 30580 flow. Second operand has 12 states, 12 states have (on average 86.0) internal successors, (1032), 12 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:13,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:36:13,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 382 [2021-03-25 12:36:13,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:36:14,923 INFO L129 PetriNetUnfolder]: 428/1567 cut-off events. [2021-03-25 12:36:14,923 INFO L130 PetriNetUnfolder]: For 304875/306341 co-relation queries the response was YES. [2021-03-25 12:36:14,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30365 conditions, 1567 events. 428/1567 cut-off events. For 304875/306341 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 15365 event pairs, 2 based on Foata normal form. 62/1483 useless extension candidates. Maximal degree in co-relation 30208. Up to 655 conditions per place. [2021-03-25 12:36:14,956 INFO L132 encePairwiseOnDemand]: 177/382 looper letters, 254 selfloop transitions, 293 changer transitions 0/558 dead transitions. [2021-03-25 12:36:14,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 558 transitions, 33287 flow [2021-03-25 12:36:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 12:36:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 12:36:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1177 transitions. [2021-03-25 12:36:14,958 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3081151832460733 [2021-03-25 12:36:14,958 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1177 transitions. [2021-03-25 12:36:14,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1177 transitions. [2021-03-25 12:36:14,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:36:14,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1177 transitions. [2021-03-25 12:36:14,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.7) internal successors, (1177), 10 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:14,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 382.0) internal successors, (4202), 11 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:14,961 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 382.0) internal successors, (4202), 11 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:14,961 INFO L185 Difference]: Start difference. First operand has 393 places, 541 transitions, 30580 flow. Second operand 10 states and 1177 transitions. [2021-03-25 12:36:14,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 558 transitions, 33287 flow [2021-03-25 12:36:15,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 558 transitions, 33122 flow, removed 13 selfloop flow, removed 10 redundant places. [2021-03-25 12:36:15,896 INFO L241 Difference]: Finished difference. Result has 394 places, 556 transitions, 32642 flow [2021-03-25 12:36:15,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=30419, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32642, PETRI_PLACES=394, PETRI_TRANSITIONS=556} [2021-03-25 12:36:15,896 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2021-03-25 12:36:15,896 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:36:15,896 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 394 places, 556 transitions, 32642 flow [2021-03-25 12:36:15,896 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 394 places, 556 transitions, 32642 flow [2021-03-25 12:36:15,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 394 places, 556 transitions, 32642 flow [2021-03-25 12:36:16,296 INFO L129 PetriNetUnfolder]: 428/1573 cut-off events. [2021-03-25 12:36:16,296 INFO L130 PetriNetUnfolder]: For 318378/319603 co-relation queries the response was YES. [2021-03-25 12:36:16,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30145 conditions, 1573 events. 428/1573 cut-off events. For 318378/319603 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 15630 event pairs, 4 based on Foata normal form. 44/1469 useless extension candidates. Maximal degree in co-relation 29988. Up to 501 conditions per place. [2021-03-25 12:36:16,344 INFO L142 LiptonReduction]: Number of co-enabled transitions 2570 [2021-03-25 12:36:16,723 INFO L154 LiptonReduction]: Checked pairs total: 1343 [2021-03-25 12:36:16,724 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 12:36:16,724 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 828 [2021-03-25 12:36:16,724 INFO L480 AbstractCegarLoop]: Abstraction has has 394 places, 556 transitions, 32650 flow [2021-03-25 12:36:16,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 86.0) internal successors, (1032), 12 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:16,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:36:16,724 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:36:16,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:16,925 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:36:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:36:16,925 INFO L82 PathProgramCache]: Analyzing trace with hash -263487205, now seen corresponding path program 1 times [2021-03-25 12:36:16,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:36:16,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710949286] [2021-03-25 12:36:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:36:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:16,933 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:36:16,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:16,940 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 12:36:16,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:16,945 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-03-25 12:36:16,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:36:16,951 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:36:16,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:16,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:16,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:16,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:36:16,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:16,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710949286] [2021-03-25 12:36:16,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042911155] [2021-03-25 12:36:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:17,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:36:17,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:36:17,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:17,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:17,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:17,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:17,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:17,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:17,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:17,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:17,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:17,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:36:17,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 12:36:17,040 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 12:36:17,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:36:17,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 12:36:17,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:17,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:36:17,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:17,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:17,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:36:17,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:17,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:17,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:17,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:17,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:17,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:17,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:17,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:17,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:17,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:17,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,072 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:36:17,072 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:36:17,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:36:17,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:17,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:17,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:17,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:17,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:17,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:17,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:17,089 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:36:17,089 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:36:17,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:36:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:17,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:36:17,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:36:17,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561969418] [2021-03-25 12:36:17,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:36:17,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:36:17,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:36:17,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:36:17,102 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 387 [2021-03-25 12:36:17,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 556 transitions, 32650 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:17,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:36:17,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 387 [2021-03-25 12:36:17,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:36:18,920 INFO L129 PetriNetUnfolder]: 427/1568 cut-off events. [2021-03-25 12:36:18,920 INFO L130 PetriNetUnfolder]: For 312755/314137 co-relation queries the response was YES. [2021-03-25 12:36:18,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30967 conditions, 1568 events. 427/1568 cut-off events. For 312755/314137 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 15469 event pairs, 3 based on Foata normal form. 43/1463 useless extension candidates. Maximal degree in co-relation 30808. Up to 739 conditions per place. [2021-03-25 12:36:18,952 INFO L132 encePairwiseOnDemand]: 322/387 looper letters, 450 selfloop transitions, 111 changer transitions 0/572 dead transitions. [2021-03-25 12:36:18,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 572 transitions, 34809 flow [2021-03-25 12:36:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 12:36:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 12:36:18,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1208 transitions. [2021-03-25 12:36:18,954 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.26012058570198104 [2021-03-25 12:36:18,954 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1208 transitions. [2021-03-25 12:36:18,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1208 transitions. [2021-03-25 12:36:18,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:36:18,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1208 transitions. [2021-03-25 12:36:18,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:18,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:18,957 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 387.0) internal successors, (5031), 13 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:18,958 INFO L185 Difference]: Start difference. First operand has 394 places, 556 transitions, 32650 flow. Second operand 12 states and 1208 transitions. [2021-03-25 12:36:18,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 572 transitions, 34809 flow [2021-03-25 12:36:19,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 572 transitions, 34206 flow, removed 237 selfloop flow, removed 6 redundant places. [2021-03-25 12:36:19,991 INFO L241 Difference]: Finished difference. Result has 401 places, 558 transitions, 32629 flow [2021-03-25 12:36:19,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=387, PETRI_DIFFERENCE_MINUEND_FLOW=32124, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=32629, PETRI_PLACES=401, PETRI_TRANSITIONS=558} [2021-03-25 12:36:19,992 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2021-03-25 12:36:19,992 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:36:19,992 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 401 places, 558 transitions, 32629 flow [2021-03-25 12:36:19,993 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 401 places, 558 transitions, 32629 flow [2021-03-25 12:36:20,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 401 places, 558 transitions, 32629 flow [2021-03-25 12:36:20,416 INFO L129 PetriNetUnfolder]: 427/1572 cut-off events. [2021-03-25 12:36:20,417 INFO L130 PetriNetUnfolder]: For 311236/312460 co-relation queries the response was YES. [2021-03-25 12:36:20,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29868 conditions, 1572 events. 427/1572 cut-off events. For 311236/312460 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 15619 event pairs, 3 based on Foata normal form. 50/1474 useless extension candidates. Maximal degree in co-relation 29711. Up to 490 conditions per place. [2021-03-25 12:36:20,462 INFO L142 LiptonReduction]: Number of co-enabled transitions 2578 [2021-03-25 12:36:20,729 INFO L154 LiptonReduction]: Checked pairs total: 206 [2021-03-25 12:36:20,730 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:36:20,730 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 738 [2021-03-25 12:36:20,730 INFO L480 AbstractCegarLoop]: Abstraction has has 401 places, 558 transitions, 32629 flow [2021-03-25 12:36:20,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:20,730 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:36:20,730 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:36:20,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-03-25 12:36:20,931 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:36:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:36:20,931 INFO L82 PathProgramCache]: Analyzing trace with hash 638953801, now seen corresponding path program 1 times [2021-03-25 12:36:20,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:36:20,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790627879] [2021-03-25 12:36:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:36:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:20,942 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:36:20,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:20,947 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:36:20,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:20,953 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:36:20,954 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:36:20,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:20,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:20,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:20,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:20,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:20,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:20,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 12:36:20,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:21,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790627879] [2021-03-25 12:36:21,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84677523] [2021-03-25 12:36:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:21,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-25 12:36:21,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:36:21,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:21,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:21,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:21,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:21,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:21,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:21,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:21,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:21,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:21,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:21,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:21,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:21,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:21,087 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 12:36:21,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:36:21,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:36:21,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:21,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:21,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:21,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:21,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:21,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:21,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:21,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:21,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,116 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:36:21,116 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:36:21,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:36:21,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:21,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:21,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:21,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,136 INFO L147 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size 23 [2021-03-25 12:36:21,137 INFO L142 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size [2021-03-25 12:36:21,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:36:21,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 12:36:21,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-25 12:36:21,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 12:36:21,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-25 12:36:21,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,167 INFO L147 QuantifierPusher]: treesize reduction -3, result has 103.8 percent of original size 82 [2021-03-25 12:36:21,168 INFO L142 QuantifierPusher]: treesize reduction -3, result has 103.8 percent of original size [2021-03-25 12:36:21,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-25 12:36:21,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 12:36:21,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:36:21,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:21,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:21,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-25 12:36:21,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:21,200 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.0 percent of original size 21 [2021-03-25 12:36:21,201 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.0 percent of original size [2021-03-25 12:36:21,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:21,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:36:21,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-03-25 12:36:21,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789456000] [2021-03-25 12:36:21,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-25 12:36:21,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:36:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-25 12:36:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-03-25 12:36:21,217 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 388 [2021-03-25 12:36:21,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 558 transitions, 32629 flow. Second operand has 16 states, 16 states have (on average 78.0) internal successors, (1248), 16 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:21,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:36:21,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 388 [2021-03-25 12:36:21,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:36:23,265 INFO L129 PetriNetUnfolder]: 440/1619 cut-off events. [2021-03-25 12:36:23,265 INFO L130 PetriNetUnfolder]: For 327748/329133 co-relation queries the response was YES. [2021-03-25 12:36:23,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31883 conditions, 1619 events. 440/1619 cut-off events. For 327748/329133 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 16098 event pairs, 2 based on Foata normal form. 69/1533 useless extension candidates. Maximal degree in co-relation 31724. Up to 569 conditions per place. [2021-03-25 12:36:23,298 INFO L132 encePairwiseOnDemand]: 261/388 looper letters, 299 selfloop transitions, 279 changer transitions 0/589 dead transitions. [2021-03-25 12:36:23,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 589 transitions, 36000 flow [2021-03-25 12:36:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-25 12:36:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-25 12:36:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1730 transitions. [2021-03-25 12:36:23,300 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.24770904925544102 [2021-03-25 12:36:23,300 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1730 transitions. [2021-03-25 12:36:23,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1730 transitions. [2021-03-25 12:36:23,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:36:23,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1730 transitions. [2021-03-25 12:36:23,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 96.11111111111111) internal successors, (1730), 18 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:23,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 388.0) internal successors, (7372), 19 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:23,306 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 388.0) internal successors, (7372), 19 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:23,306 INFO L185 Difference]: Start difference. First operand has 401 places, 558 transitions, 32629 flow. Second operand 18 states and 1730 transitions. [2021-03-25 12:36:23,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 589 transitions, 36000 flow [2021-03-25 12:36:24,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 589 transitions, 35864 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-03-25 12:36:24,339 INFO L241 Difference]: Finished difference. Result has 414 places, 576 transitions, 34741 flow [2021-03-25 12:36:24,340 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=32494, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=34741, PETRI_PLACES=414, PETRI_TRANSITIONS=576} [2021-03-25 12:36:24,340 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2021-03-25 12:36:24,340 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:36:24,340 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 576 transitions, 34741 flow [2021-03-25 12:36:24,340 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 576 transitions, 34741 flow [2021-03-25 12:36:24,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 414 places, 576 transitions, 34741 flow [2021-03-25 12:36:24,748 INFO L129 PetriNetUnfolder]: 440/1625 cut-off events. [2021-03-25 12:36:24,748 INFO L130 PetriNetUnfolder]: For 348399/350403 co-relation queries the response was YES. [2021-03-25 12:36:24,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31663 conditions, 1625 events. 440/1625 cut-off events. For 348399/350403 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 16266 event pairs, 3 based on Foata normal form. 64/1530 useless extension candidates. Maximal degree in co-relation 31503. Up to 512 conditions per place. [2021-03-25 12:36:24,797 INFO L142 LiptonReduction]: Number of co-enabled transitions 2654 [2021-03-25 12:36:25,255 INFO L154 LiptonReduction]: Checked pairs total: 1184 [2021-03-25 12:36:25,255 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 12:36:25,255 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 915 [2021-03-25 12:36:25,255 INFO L480 AbstractCegarLoop]: Abstraction has has 414 places, 576 transitions, 34833 flow [2021-03-25 12:36:25,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 78.0) internal successors, (1248), 16 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:25,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:36:25,255 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:36:25,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:25,456 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:36:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:36:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash -274724661, now seen corresponding path program 1 times [2021-03-25 12:36:25,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:36:25,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581438591] [2021-03-25 12:36:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:36:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:25,466 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:36:25,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,470 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 12:36:25,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,476 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:36:25,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:25,483 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 12:36:25,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:25,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:25,500 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:36:25,501 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:36:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:25,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581438591] [2021-03-25 12:36:25,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500979269] [2021-03-25 12:36:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:25,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 12:36:25,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:36:25,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:25,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:25,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:25,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:25,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:25,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:25,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:25,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:25,587 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 12:36:25,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:25,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:25,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:25,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:25,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:36:25,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:25,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:25,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:36:25,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:25,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:25,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:25,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:25,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:25,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:25,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:25,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:25,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,616 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:36:25,616 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:36:25,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:36:25,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:25,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:25,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:25,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:25,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:25,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:25,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:25,634 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 12:36:25,634 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 12:36:25,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 12:36:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:25,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 12:36:25,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-25 12:36:25,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286291024] [2021-03-25 12:36:25,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 12:36:25,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:36:25,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 12:36:25,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-03-25 12:36:25,648 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 394 [2021-03-25 12:36:25,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 576 transitions, 34833 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:25,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:36:25,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 394 [2021-03-25 12:36:25,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:36:27,709 INFO L129 PetriNetUnfolder]: 444/1637 cut-off events. [2021-03-25 12:36:27,710 INFO L130 PetriNetUnfolder]: For 341412/343105 co-relation queries the response was YES. [2021-03-25 12:36:27,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32968 conditions, 1637 events. 444/1637 cut-off events. For 341412/343105 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 16354 event pairs, 2 based on Foata normal form. 44/1525 useless extension candidates. Maximal degree in co-relation 32806. Up to 721 conditions per place. [2021-03-25 12:36:27,743 INFO L132 encePairwiseOnDemand]: 304/394 looper letters, 426 selfloop transitions, 162 changer transitions 0/599 dead transitions. [2021-03-25 12:36:27,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 599 transitions, 37545 flow [2021-03-25 12:36:27,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 12:36:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 12:36:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1229 transitions. [2021-03-25 12:36:27,745 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2599407783417936 [2021-03-25 12:36:27,745 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1229 transitions. [2021-03-25 12:36:27,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1229 transitions. [2021-03-25 12:36:27,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:36:27,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1229 transitions. [2021-03-25 12:36:27,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 102.41666666666667) internal successors, (1229), 12 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:27,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 394.0) internal successors, (5122), 13 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:27,749 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 394.0) internal successors, (5122), 13 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:27,749 INFO L185 Difference]: Start difference. First operand has 414 places, 576 transitions, 34833 flow. Second operand 12 states and 1229 transitions. [2021-03-25 12:36:27,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 599 transitions, 37545 flow [2021-03-25 12:36:28,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 599 transitions, 36014 flow, removed 567 selfloop flow, removed 16 redundant places. [2021-03-25 12:36:28,887 INFO L241 Difference]: Finished difference. Result has 411 places, 581 transitions, 34414 flow [2021-03-25 12:36:28,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=33448, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=34414, PETRI_PLACES=411, PETRI_TRANSITIONS=581} [2021-03-25 12:36:28,888 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2021-03-25 12:36:28,888 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:36:28,888 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 581 transitions, 34414 flow [2021-03-25 12:36:28,888 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 581 transitions, 34414 flow [2021-03-25 12:36:28,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 411 places, 581 transitions, 34414 flow [2021-03-25 12:36:29,286 INFO L129 PetriNetUnfolder]: 444/1635 cut-off events. [2021-03-25 12:36:29,286 INFO L130 PetriNetUnfolder]: For 337615/338941 co-relation queries the response was YES. [2021-03-25 12:36:29,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31397 conditions, 1635 events. 444/1635 cut-off events. For 337615/338941 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 16468 event pairs, 2 based on Foata normal form. 71/1551 useless extension candidates. Maximal degree in co-relation 31237. Up to 483 conditions per place. [2021-03-25 12:36:29,331 INFO L142 LiptonReduction]: Number of co-enabled transitions 2674 [2021-03-25 12:36:29,682 INFO L154 LiptonReduction]: Checked pairs total: 1354 [2021-03-25 12:36:29,682 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 12:36:29,682 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 794 [2021-03-25 12:36:29,682 INFO L480 AbstractCegarLoop]: Abstraction has has 411 places, 581 transitions, 34426 flow [2021-03-25 12:36:29,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 12:36:29,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:36:29,683 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:36:29,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-03-25 12:36:29,883 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:36:29,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:36:29,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1995965041, now seen corresponding path program 1 times [2021-03-25 12:36:29,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:36:29,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078523399] [2021-03-25 12:36:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:36:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:29,893 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 12:36:29,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:29,897 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 12:36:29,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:29,902 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 12:36:29,903 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 12:36:29,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:29,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:29,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:29,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 12:36:29,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:29,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 12:36:29,944 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 12:36:29,944 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 12:36:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:36:29,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078523399] [2021-03-25 12:36:29,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705314942] [2021-03-25 12:36:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 12:36:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:36:29,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-25 12:36:29,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 12:36:29,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:29,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:29,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:29,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:29,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:29,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:29,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:29,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:36:30,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:30,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:30,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:30,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:30,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:30,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:30,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:30,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 12:36:30,027 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 12:36:30,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:36:30,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:36:30,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:30,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:30,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:30,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 12:36:30,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,051 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 12:36:30,052 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 12:36:30,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 12:36:30,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:30,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:36:30,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 12:36:30,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:36:30,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:36:30,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 12:36:30,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:36:30,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:36:30,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:36:30,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 12:36:30,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,083 INFO L147 QuantifierPusher]: treesize reduction -1, result has 104.2 percent of original size 25 [2021-03-25 12:36:30,084 INFO L142 QuantifierPusher]: treesize reduction -1, result has 104.2 percent of original size [2021-03-25 12:36:30,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:36:30,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 12:36:30,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-25 12:36:30,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-25 12:36:30,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-25 12:36:30,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,117 INFO L142 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size [2021-03-25 12:36:30,119 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.4 percent of original size 39 [2021-03-25 12:36:30,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,120 INFO L142 QuantifierPusher]: treesize reduction -2, result has 104.9 percent of original size [2021-03-25 12:36:30,121 INFO L147 QuantifierPusher]: treesize reduction -2, result has 104.9 percent of original size 43 [2021-03-25 12:36:30,148 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:30,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,173 INFO L147 QuantifierPusher]: treesize reduction -2, result has 104.0 percent of original size 52 [2021-03-25 12:36:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,175 INFO L147 QuantifierPusher]: treesize reduction -2, result has 103.4 percent of original size 61 [2021-03-25 12:36:30,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,177 INFO L142 QuantifierPusher]: treesize reduction -1, result has 101.6 percent of original size [2021-03-25 12:36:30,182 INFO L147 QuantifierPusher]: treesize reduction -7, result has 104.6 percent of original size 159 [2021-03-25 12:36:30,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,184 INFO L142 QuantifierPusher]: treesize reduction -2, result has 103.5 percent of original size [2021-03-25 12:36:30,207 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:30,242 INFO L147 QuantifierPusher]: treesize reduction 295, result has 96.7 percent of original size 8522 [2021-03-25 12:36:30,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,256 INFO L142 QuantifierPusher]: treesize reduction -8, result has 104.5 percent of original size [2021-03-25 12:36:30,324 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:30,464 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:30,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:30,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-03-25 12:36:30,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-25 12:36:30,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-25 12:36:30,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,546 INFO L147 QuantifierPusher]: treesize reduction -1, result has 100.8 percent of original size 120 [2021-03-25 12:36:30,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:30,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:30,570 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:30,861 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:31,869 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:33,110 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:34,551 INFO L842 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:36,383 INFO L842 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:38,741 INFO L842 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:41,369 INFO L842 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:43,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 12:36:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 12:36:43,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:36:43,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 12:36:43,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 12:36:43,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:43,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 12:36:43,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 12:36:43,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:43,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 12:36:43,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 12:36:43,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 12:36:43,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:36:43,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 12:36:43,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 12:36:43,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 12:36:43,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 12:36:43,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 12:36:43,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 12:36:43,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 12:36:43,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:43,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 12:36:43,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:43,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:43,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 12:36:43,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:36:43,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 12:36:43,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 12:36:43,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:36:43,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-25 12:36:43,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 12:36:43,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 12:36:43,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 12:36:43,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 12:36:43,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 12:36:43,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 12:36:43,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 12:36:43,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 12:36:43,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-25 12:36:43,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 12:36:43,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 12:36:43,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 12:36:43,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:36:43,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 12:36:43,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:36:43,994 INFO L142 QuantifierPusher]: treesize reduction 5, result has 99.6 percent of original size [2021-03-25 12:36:44,211 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:44,604 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:45,261 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:46,144 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:47,267 INFO L842 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:48,866 INFO L842 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:50,794 INFO L842 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:53,195 INFO L842 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:55,995 INFO L842 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:36:59,184 INFO L842 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:02,782 INFO L842 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:06,784 INFO L842 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:11,567 INFO L842 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:17,229 INFO L842 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:23,214 INFO L842 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:29,913 INFO L842 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:36,984 INFO L842 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:42,955 INFO L842 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:43,711 INFO L842 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:44,663 INFO L842 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:45,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:45,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:37:45,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-25 12:37:45,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:45,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:37:45,015 INFO L147 QuantifierPusher]: treesize reduction -3, result has 102.9 percent of original size 105 [2021-03-25 12:37:45,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:45,021 INFO L142 QuantifierPusher]: treesize reduction -1, result has 101.6 percent of original size [2021-03-25 12:37:45,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-25 12:37:45,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:45,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:37:45,028 INFO L147 QuantifierPusher]: treesize reduction -10, result has 107.9 percent of original size 137 [2021-03-25 12:37:45,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:45,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:37:45,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-25 12:37:45,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:45,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:37:45,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:45,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:37:45,046 INFO L147 QuantifierPusher]: treesize reduction -2, result has 100.8 percent of original size 258 [2021-03-25 12:37:45,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:45,047 INFO L142 QuantifierPusher]: treesize reduction -2, result has 101.0 percent of original size [2021-03-25 12:37:45,088 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:45,230 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:45,516 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:46,262 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:47,549 INFO L842 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 12:37:48,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:48,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:37:48,063 INFO L147 QuantifierPusher]: treesize reduction -264, result has 104.5 percent of original size 6190 [2021-03-25 12:37:48,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 12:37:48,081 INFO L142 QuantifierPusher]: treesize reduction 45, result has 97.1 percent of original size [2021-03-25 12:37:48,207 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown