/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 22:20:45,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 22:20:45,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 22:20:45,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 22:20:45,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 22:20:45,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 22:20:45,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 22:20:45,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 22:20:45,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 22:20:45,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 22:20:45,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 22:20:45,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 22:20:45,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 22:20:45,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 22:20:45,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 22:20:45,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 22:20:45,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 22:20:45,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 22:20:45,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 22:20:45,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 22:20:45,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 22:20:45,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 22:20:45,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 22:20:45,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 22:20:45,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 22:20:45,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 22:20:45,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 22:20:45,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 22:20:45,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 22:20:45,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 22:20:45,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 22:20:45,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 22:20:45,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 22:20:45,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 22:20:45,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 22:20:45,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 22:20:45,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 22:20:45,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 22:20:45,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 22:20:45,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 22:20:45,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 22:20:45,422 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-25 22:20:45,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 22:20:45,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 22:20:45,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 22:20:45,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 22:20:45,450 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 22:20:45,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 22:20:45,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 22:20:45,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 22:20:45,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 22:20:45,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 22:20:45,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 22:20:45,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 22:20:45,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 22:20:45,451 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 22:20:45,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 22:20:45,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 22:20:45,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 22:20:45,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 22:20:45,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 22:20:45,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 22:20:45,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 22:20:45,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:20:45,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 22:20:45,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 22:20:45,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 22:20:45,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 22:20:45,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 22:20:45,453 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-25 22:20:45,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 22:20:45,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 22:20:45,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 22:20:45,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 22:20:45,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 22:20:45,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 22:20:45,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 22:20:45,778 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 22:20:45,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-1.i [2021-03-25 22:20:45,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e34f937a/b4bbdec48a814b068fa607cb1c7e6441/FLAG10dbfa55b [2021-03-25 22:20:46,277 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 22:20:46,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-1.i [2021-03-25 22:20:46,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e34f937a/b4bbdec48a814b068fa607cb1c7e6441/FLAG10dbfa55b [2021-03-25 22:20:46,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e34f937a/b4bbdec48a814b068fa607cb1c7e6441 [2021-03-25 22:20:46,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 22:20:46,641 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 22:20:46,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 22:20:46,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 22:20:46,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 22:20:46,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:20:46" (1/1) ... [2021-03-25 22:20:46,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fc7ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:46, skipping insertion in model container [2021-03-25 22:20:46,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:20:46" (1/1) ... [2021-03-25 22:20:46,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 22:20:46,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 22:20:46,929 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_longer-1.i[30927,30940] [2021-03-25 22:20:46,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:20:46,985 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 22:20:47,023 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_longer-1.i[30927,30940] [2021-03-25 22:20:47,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:20:47,075 INFO L208 MainTranslator]: Completed translation [2021-03-25 22:20:47,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47 WrapperNode [2021-03-25 22:20:47,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 22:20:47,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 22:20:47,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 22:20:47,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 22:20:47,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 22:20:47,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 22:20:47,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 22:20:47,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 22:20:47,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (1/1) ... [2021-03-25 22:20:47,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 22:20:47,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 22:20:47,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 22:20:47,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 22:20:47,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (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 22:20:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-03-25 22:20:47,183 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-03-25 22:20:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-03-25 22:20:47,184 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-03-25 22:20:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 22:20:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 22:20:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 22:20:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 22:20:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 22:20:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 22:20:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 22:20:47,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 22:20:47,187 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 22:20:47,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 22:20:47,583 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-25 22:20:47,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:20:47 BoogieIcfgContainer [2021-03-25 22:20:47,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 22:20:47,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 22:20:47,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 22:20:47,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 22:20:47,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 10:20:46" (1/3) ... [2021-03-25 22:20:47,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf7b324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:20:47, skipping insertion in model container [2021-03-25 22:20:47,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:20:47" (2/3) ... [2021-03-25 22:20:47,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf7b324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:20:47, skipping insertion in model container [2021-03-25 22:20:47,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:20:47" (3/3) ... [2021-03-25 22:20:47,594 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-1.i [2021-03-25 22:20:47,600 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 22:20:47,603 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 22:20:47,604 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 22:20:47,633 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,633 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,634 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,634 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,634 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,634 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,635 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,635 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,635 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,635 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,636 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,636 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,636 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,636 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,637 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,637 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,637 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,637 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,637 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,638 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,638 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,638 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,638 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,638 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,639 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,639 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,639 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,639 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,640 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,640 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,640 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,640 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,640 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,641 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,641 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,641 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,641 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,641 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,641 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,642 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,642 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,642 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,642 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,642 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,642 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,642 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,643 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,643 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,643 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,643 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,643 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,643 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,644 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,644 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,644 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,644 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,646 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,646 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,647 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,648 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,648 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,653 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,653 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:20:47,657 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 22:20:47,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 22:20:47,692 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 22:20:47,692 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 22:20:47,692 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 22:20:47,693 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 22:20:47,693 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 22:20:47,693 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 22:20:47,693 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 22:20:47,693 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 22:20:47,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 134 flow [2021-03-25 22:20:47,730 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-25 22:20:47,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:20:47,734 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 5. Compared 90 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 22:20:47,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 134 flow [2021-03-25 22:20:47,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 126 flow [2021-03-25 22:20:47,738 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:47,749 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-25 22:20:47,751 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-25 22:20:47,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 126 flow [2021-03-25 22:20:47,767 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-25 22:20:47,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:20:47,768 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 96 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 22:20:47,770 INFO L142 LiptonReduction]: Number of co-enabled transitions 1080 [2021-03-25 22:20:49,135 INFO L154 LiptonReduction]: Checked pairs total: 666 [2021-03-25 22:20:49,135 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 22:20:49,137 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1400 [2021-03-25 22:20:49,150 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-25 22:20:49,150 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:20:49,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:49,151 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:49,151 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:49,155 INFO L82 PathProgramCache]: Analyzing trace with hash -86387381, now seen corresponding path program 1 times [2021-03-25 22:20:49,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:49,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583595449] [2021-03-25 22:20:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:49,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:49,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:20:49,395 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 22:20:49,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:49,404 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-25 22:20:49,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:49,412 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 22:20:49,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583595449] [2021-03-25 22:20:49,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:20:49,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 22:20:49,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333911644] [2021-03-25 22:20:49,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:20:49,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:49,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:20:49,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:20:49,438 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2021-03-25 22:20:49,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 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 22:20:49,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:49,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2021-03-25 22:20:49,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:49,523 INFO L129 PetriNetUnfolder]: 40/127 cut-off events. [2021-03-25 22:20:49,523 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:20:49,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 127 events. 40/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 473 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 186. Up to 51 conditions per place. [2021-03-25 22:20:49,525 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 5 selfloop transitions, 7 changer transitions 7/36 dead transitions. [2021-03-25 22:20:49,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 114 flow [2021-03-25 22:20:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:20:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:20:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2021-03-25 22:20:49,543 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7838383838383839 [2021-03-25 22:20:49,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2021-03-25 22:20:49,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2021-03-25 22:20:49,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:49,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2021-03-25 22:20:49,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:49,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:49,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:49,573 INFO L185 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 5 states and 388 transitions. [2021-03-25 22:20:49,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 114 flow [2021-03-25 22:20:49,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 22:20:49,577 INFO L241 Difference]: Finished difference. Result has 35 places, 28 transitions, 95 flow [2021-03-25 22:20:49,579 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2021-03-25 22:20:49,580 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-25 22:20:49,580 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:49,580 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 28 transitions, 95 flow [2021-03-25 22:20:49,580 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 28 transitions, 95 flow [2021-03-25 22:20:49,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 95 flow [2021-03-25 22:20:49,594 INFO L129 PetriNetUnfolder]: 13/64 cut-off events. [2021-03-25 22:20:49,594 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-25 22:20:49,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 64 events. 13/64 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 190 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 103. Up to 14 conditions per place. [2021-03-25 22:20:49,597 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-25 22:20:49,773 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-25 22:20:50,023 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-25 22:20:50,623 INFO L154 LiptonReduction]: Checked pairs total: 83 [2021-03-25 22:20:50,623 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 22:20:50,623 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1043 [2021-03-25 22:20:50,624 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 83 flow [2021-03-25 22:20:50,625 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 22:20:50,625 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:50,625 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:50,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 22:20:50,625 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:50,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1815707967, now seen corresponding path program 1 times [2021-03-25 22:20:50,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:50,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050431752] [2021-03-25 22:20:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:50,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:50,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:20:50,689 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:20:50,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:50,695 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 22:20:50,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:50,706 INFO L142 QuantifierPusher]: treesize reduction 10, result has 41.2 percent of original size [2021-03-25 22:20:50,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:50,712 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 22:20:50,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050431752] [2021-03-25 22:20:50,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:20:50,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:20:50,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840648127] [2021-03-25 22:20:50,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:20:50,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:50,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:20:50,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:20:50,715 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2021-03-25 22:20:50,716 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 22:20:50,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:50,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2021-03-25 22:20:50,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:50,770 INFO L129 PetriNetUnfolder]: 38/104 cut-off events. [2021-03-25 22:20:50,770 INFO L130 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2021-03-25 22:20:50,770 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 382 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 22:20:50,771 INFO L132 encePairwiseOnDemand]: 100/107 looper letters, 5 selfloop transitions, 14 changer transitions 0/30 dead transitions. [2021-03-25 22:20:50,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 160 flow [2021-03-25 22:20:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:20:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:20:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 560 transitions. [2021-03-25 22:20:50,774 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7476635514018691 [2021-03-25 22:20:50,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 560 transitions. [2021-03-25 22:20:50,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 560 transitions. [2021-03-25 22:20:50,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:50,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 560 transitions. [2021-03-25 22:20:50,776 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 22:20:50,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 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 22:20:50,778 INFO L81 ComplementDD]: Finished complementDD. Result has 8 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 22:20:50,778 INFO L185 Difference]: Start difference. First operand has 26 places, 22 transitions, 83 flow. Second operand 7 states and 560 transitions. [2021-03-25 22:20:50,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 160 flow [2021-03-25 22:20:50,779 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 22:20:50,780 INFO L241 Difference]: Finished difference. Result has 35 places, 29 transitions, 168 flow [2021-03-25 22:20:50,780 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, 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 22:20:50,780 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-25 22:20:50,781 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:50,781 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-25 22:20:50,781 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-25 22:20:50,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 168 flow [2021-03-25 22:20:50,789 INFO L129 PetriNetUnfolder]: 26/91 cut-off events. [2021-03-25 22:20:50,789 INFO L130 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2021-03-25 22:20:50,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 91 events. 26/91 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 343 event pairs, 3 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 256. Up to 32 conditions per place. [2021-03-25 22:20:50,791 INFO L142 LiptonReduction]: Number of co-enabled transitions 204 [2021-03-25 22:20:50,910 INFO L154 LiptonReduction]: Checked pairs total: 89 [2021-03-25 22:20:50,910 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 22:20:50,910 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 129 [2021-03-25 22:20:50,911 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 168 flow [2021-03-25 22:20:50,911 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 22:20:50,912 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:50,912 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:50,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 22:20:50,912 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:50,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:50,912 INFO L82 PathProgramCache]: Analyzing trace with hash 289856118, now seen corresponding path program 1 times [2021-03-25 22:20:50,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:50,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499038749] [2021-03-25 22:20:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:50,969 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:20:50,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:50,981 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-25 22:20:50,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:20:50,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:20:50,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,001 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 22:20:51,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499038749] [2021-03-25 22:20:51,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:20:51,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 22:20:51,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801425433] [2021-03-25 22:20:51,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:20:51,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:51,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:20:51,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:20:51,004 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 114 [2021-03-25 22:20:51,004 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 22:20:51,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:51,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 114 [2021-03-25 22:20:51,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:51,061 INFO L129 PetriNetUnfolder]: 40/107 cut-off events. [2021-03-25 22:20:51,061 INFO L130 PetriNetUnfolder]: For 281/287 co-relation queries the response was YES. [2021-03-25 22:20:51,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 107 events. 40/107 cut-off events. For 281/287 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 406 event pairs, 4 based on Foata normal form. 8/98 useless extension candidates. Maximal degree in co-relation 375. Up to 59 conditions per place. [2021-03-25 22:20:51,065 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 12 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2021-03-25 22:20:51,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 236 flow [2021-03-25 22:20:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:20:51,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:20:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2021-03-25 22:20:51,067 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7052631578947368 [2021-03-25 22:20:51,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2021-03-25 22:20:51,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2021-03-25 22:20:51,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:51,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2021-03-25 22:20:51,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:51,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:51,070 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:51,070 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 168 flow. Second operand 5 states and 402 transitions. [2021-03-25 22:20:51,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 236 flow [2021-03-25 22:20:51,074 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 22:20:51,075 INFO L241 Difference]: Finished difference. Result has 38 places, 30 transitions, 178 flow [2021-03-25 22:20:51,075 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, 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 22:20:51,075 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-25 22:20:51,075 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:51,075 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-25 22:20:51,076 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-25 22:20:51,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 178 flow [2021-03-25 22:20:51,086 INFO L129 PetriNetUnfolder]: 32/103 cut-off events. [2021-03-25 22:20:51,087 INFO L130 PetriNetUnfolder]: For 194/195 co-relation queries the response was YES. [2021-03-25 22:20:51,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 103 events. 32/103 cut-off events. For 194/195 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 429 event pairs, 2 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 295. Up to 30 conditions per place. [2021-03-25 22:20:51,090 INFO L142 LiptonReduction]: Number of co-enabled transitions 208 [2021-03-25 22:20:51,186 INFO L154 LiptonReduction]: Checked pairs total: 56 [2021-03-25 22:20:51,186 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 22:20:51,186 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 111 [2021-03-25 22:20:51,187 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 176 flow [2021-03-25 22:20:51,188 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 22:20:51,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:51,188 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:51,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 22:20:51,188 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:51,189 INFO L82 PathProgramCache]: Analyzing trace with hash 287078226, now seen corresponding path program 1 times [2021-03-25 22:20:51,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:51,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541594375] [2021-03-25 22:20:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:51,213 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:20:51,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,219 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 22:20:51,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,225 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:20:51,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,231 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 22:20:51,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541594375] [2021-03-25 22:20:51,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:20:51,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 22:20:51,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64149214] [2021-03-25 22:20:51,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:20:51,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:51,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:20:51,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:20:51,234 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2021-03-25 22:20:51,234 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 22:20:51,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:51,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2021-03-25 22:20:51,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:51,306 INFO L129 PetriNetUnfolder]: 36/98 cut-off events. [2021-03-25 22:20:51,306 INFO L130 PetriNetUnfolder]: For 269/275 co-relation queries the response was YES. [2021-03-25 22:20:51,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 98 events. 36/98 cut-off events. For 269/275 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 355 event pairs, 0 based on Foata normal form. 8/90 useless extension candidates. Maximal degree in co-relation 346. Up to 49 conditions per place. [2021-03-25 22:20:51,307 INFO L132 encePairwiseOnDemand]: 108/119 looper letters, 12 selfloop transitions, 16 changer transitions 0/38 dead transitions. [2021-03-25 22:20:51,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 299 flow [2021-03-25 22:20:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:20:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:20:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 562 transitions. [2021-03-25 22:20:51,309 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6746698679471789 [2021-03-25 22:20:51,309 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 562 transitions. [2021-03-25 22:20:51,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 562 transitions. [2021-03-25 22:20:51,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:51,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 562 transitions. [2021-03-25 22:20:51,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.28571428571429) internal successors, (562), 7 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:51,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:51,314 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:51,314 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 176 flow. Second operand 7 states and 562 transitions. [2021-03-25 22:20:51,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 299 flow [2021-03-25 22:20:51,315 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 22:20:51,316 INFO L241 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2021-03-25 22:20:51,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, 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 22:20:51,317 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2021-03-25 22:20:51,317 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:51,317 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-25 22:20:51,317 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-25 22:20:51,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 267 flow [2021-03-25 22:20:51,326 INFO L129 PetriNetUnfolder]: 34/96 cut-off events. [2021-03-25 22:20:51,326 INFO L130 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2021-03-25 22:20:51,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 96 events. 34/96 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 354 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 349. Up to 28 conditions per place. [2021-03-25 22:20:51,330 INFO L142 LiptonReduction]: Number of co-enabled transitions 230 [2021-03-25 22:20:51,395 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-25 22:20:51,396 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 22:20:51,397 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 80 [2021-03-25 22:20:51,399 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 265 flow [2021-03-25 22:20:51,399 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 22:20:51,399 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:51,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:51,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 22:20:51,400 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:51,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1035295541, now seen corresponding path program 1 times [2021-03-25 22:20:51,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:51,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422166994] [2021-03-25 22:20:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:51,492 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-25 22:20:51,493 INFO L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-03-25 22:20:51,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 22:20:51,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,520 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 22:20:51,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:20:51,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,535 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 22:20:51,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422166994] [2021-03-25 22:20:51,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945446064] [2021-03-25 22:20:51,536 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 22:20:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:51,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 22:20:51,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:20:51,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:51,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:51,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:51,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:51,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:51,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:51,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:51,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:51,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:51,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:51,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:51,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:51,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:51,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:51,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:51,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:51,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:51,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:51,704 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 22:20:51,707 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 22:20:51,710 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:51,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:51,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:51,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:51,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:51,731 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 22:20:51,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:20:51,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 22:20:51,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119228621] [2021-03-25 22:20:51,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 22:20:51,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:51,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 22:20:51,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 22:20:51,733 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 122 [2021-03-25 22:20:51,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 265 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 22:20:51,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:51,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 122 [2021-03-25 22:20:51,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:52,030 INFO L129 PetriNetUnfolder]: 53/159 cut-off events. [2021-03-25 22:20:52,030 INFO L130 PetriNetUnfolder]: For 918/924 co-relation queries the response was YES. [2021-03-25 22:20:52,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 159 events. 53/159 cut-off events. For 918/924 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 718 event pairs, 0 based on Foata normal form. 14/142 useless extension candidates. Maximal degree in co-relation 655. Up to 46 conditions per place. [2021-03-25 22:20:52,034 INFO L132 encePairwiseOnDemand]: 108/122 looper letters, 6 selfloop transitions, 42 changer transitions 0/57 dead transitions. [2021-03-25 22:20:52,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 587 flow [2021-03-25 22:20:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 22:20:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 22:20:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1205 transitions. [2021-03-25 22:20:52,037 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6584699453551912 [2021-03-25 22:20:52,037 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1205 transitions. [2021-03-25 22:20:52,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1205 transitions. [2021-03-25 22:20:52,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:52,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1205 transitions. [2021-03-25 22:20:52,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 80.33333333333333) internal successors, (1205), 15 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:52,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 122.0) internal successors, (1952), 16 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:52,045 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 122.0) internal successors, (1952), 16 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:52,045 INFO L185 Difference]: Start difference. First operand has 41 places, 35 transitions, 265 flow. Second operand 15 states and 1205 transitions. [2021-03-25 22:20:52,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 587 flow [2021-03-25 22:20:52,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 552 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-25 22:20:52,050 INFO L241 Difference]: Finished difference. Result has 58 places, 57 transitions, 592 flow [2021-03-25 22:20:52,051 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=592, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2021-03-25 22:20:52,051 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-25 22:20:52,051 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:52,051 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 57 transitions, 592 flow [2021-03-25 22:20:52,051 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 57 transitions, 592 flow [2021-03-25 22:20:52,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 592 flow [2021-03-25 22:20:52,065 INFO L129 PetriNetUnfolder]: 53/159 cut-off events. [2021-03-25 22:20:52,065 INFO L130 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2021-03-25 22:20:52,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 159 events. 53/159 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 705 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 677. Up to 43 conditions per place. [2021-03-25 22:20:52,068 INFO L142 LiptonReduction]: Number of co-enabled transitions 328 [2021-03-25 22:20:52,422 INFO L154 LiptonReduction]: Checked pairs total: 352 [2021-03-25 22:20:52,422 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-25 22:20:52,422 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 371 [2021-03-25 22:20:52,424 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 600 flow [2021-03-25 22:20:52,424 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 22:20:52,424 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:52,425 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:52,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:20:52,646 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:52,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:52,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1554041546, now seen corresponding path program 1 times [2021-03-25 22:20:52,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:52,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962890773] [2021-03-25 22:20:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:52,699 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:20:52,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,706 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 22:20:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:52,718 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-03-25 22:20:52,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:52,735 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:20:52,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,743 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 22:20:52,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962890773] [2021-03-25 22:20:52,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537713855] [2021-03-25 22:20:52,743 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 22:20:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:52,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:20:52,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:20:52,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:52,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:52,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:52,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:52,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:52,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:52,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:52,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:52,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:52,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:52,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:52,873 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 22:20:52,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:52,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:52,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:52,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:52,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:52,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:52,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:52,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:52,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:52,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:52,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:52,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:52,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:52,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:52,942 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:20:52,943 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:20:52,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:52,952 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 22:20:52,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:20:52,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:20:52,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577180690] [2021-03-25 22:20:52,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:20:52,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:52,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:20:52,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:20:52,956 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 136 [2021-03-25 22:20:52,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 600 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 22:20:52,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:52,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 136 [2021-03-25 22:20:52,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:53,162 INFO L129 PetriNetUnfolder]: 58/175 cut-off events. [2021-03-25 22:20:53,163 INFO L130 PetriNetUnfolder]: For 1417/1430 co-relation queries the response was YES. [2021-03-25 22:20:53,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 175 events. 58/175 cut-off events. For 1417/1430 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 859 event pairs, 0 based on Foata normal form. 10/149 useless extension candidates. Maximal degree in co-relation 860. Up to 76 conditions per place. [2021-03-25 22:20:53,166 INFO L132 encePairwiseOnDemand]: 116/136 looper letters, 33 selfloop transitions, 28 changer transitions 0/70 dead transitions. [2021-03-25 22:20:53,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 912 flow [2021-03-25 22:20:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:20:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:20:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 730 transitions. [2021-03-25 22:20:53,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5964052287581699 [2021-03-25 22:20:53,169 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 730 transitions. [2021-03-25 22:20:53,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 730 transitions. [2021-03-25 22:20:53,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:53,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 730 transitions. [2021-03-25 22:20:53,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:53,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:53,173 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:53,173 INFO L185 Difference]: Start difference. First operand has 58 places, 57 transitions, 600 flow. Second operand 9 states and 730 transitions. [2021-03-25 22:20:53,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 912 flow [2021-03-25 22:20:53,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 634 flow, removed 120 selfloop flow, removed 9 redundant places. [2021-03-25 22:20:53,181 INFO L241 Difference]: Finished difference. Result has 60 places, 64 transitions, 572 flow [2021-03-25 22:20:53,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2021-03-25 22:20:53,181 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2021-03-25 22:20:53,181 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:53,181 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 64 transitions, 572 flow [2021-03-25 22:20:53,181 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 64 transitions, 572 flow [2021-03-25 22:20:53,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 64 transitions, 572 flow [2021-03-25 22:20:53,195 INFO L129 PetriNetUnfolder]: 58/171 cut-off events. [2021-03-25 22:20:53,195 INFO L130 PetriNetUnfolder]: For 515/516 co-relation queries the response was YES. [2021-03-25 22:20:53,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 171 events. 58/171 cut-off events. For 515/516 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 826 event pairs, 0 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 560. Up to 50 conditions per place. [2021-03-25 22:20:53,197 INFO L142 LiptonReduction]: Number of co-enabled transitions 362 [2021-03-25 22:20:53,436 INFO L154 LiptonReduction]: Checked pairs total: 266 [2021-03-25 22:20:53,436 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 22:20:53,437 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 256 [2021-03-25 22:20:53,438 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 577 flow [2021-03-25 22:20:53,439 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 22:20:53,439 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:53,439 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:53,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:20:53,655 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:53,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1025474679, now seen corresponding path program 1 times [2021-03-25 22:20:53,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:53,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388511704] [2021-03-25 22:20:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:53,687 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:20:53,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,692 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:20:53,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:53,699 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:20:53,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:53,707 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:20:53,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,714 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 22:20:53,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388511704] [2021-03-25 22:20:53,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800305101] [2021-03-25 22:20:53,715 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 22:20:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:53,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 22:20:53,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:20:53,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:53,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:53,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:53,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:53,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:53,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:53,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:53,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:53,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:53,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:53,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:53,812 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 22:20:53,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:53,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:53,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:53,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:53,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:53,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:53,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:53,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:53,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:53,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:53,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:53,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:53,842 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:20:53,842 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:20:53,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:53,853 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 22:20:53,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:20:53,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 22:20:53,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474539127] [2021-03-25 22:20:53,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 22:20:53,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:53,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 22:20:53,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-25 22:20:53,856 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 145 [2021-03-25 22:20:53,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 577 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 22:20:53,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:53,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 145 [2021-03-25 22:20:53,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:54,047 INFO L129 PetriNetUnfolder]: 62/189 cut-off events. [2021-03-25 22:20:54,047 INFO L130 PetriNetUnfolder]: For 707/727 co-relation queries the response was YES. [2021-03-25 22:20:54,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 189 events. 62/189 cut-off events. For 707/727 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 973 event pairs, 0 based on Foata normal form. 12/161 useless extension candidates. Maximal degree in co-relation 718. Up to 84 conditions per place. [2021-03-25 22:20:54,049 INFO L132 encePairwiseOnDemand]: 122/145 looper letters, 37 selfloop transitions, 31 changer transitions 0/77 dead transitions. [2021-03-25 22:20:54,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 808 flow [2021-03-25 22:20:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:20:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:20:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2021-03-25 22:20:54,052 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5773399014778325 [2021-03-25 22:20:54,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2021-03-25 22:20:54,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2021-03-25 22:20:54,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:54,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2021-03-25 22:20:54,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:54,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:54,056 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:54,056 INFO L185 Difference]: Start difference. First operand has 60 places, 64 transitions, 577 flow. Second operand 7 states and 586 transitions. [2021-03-25 22:20:54,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 808 flow [2021-03-25 22:20:54,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 786 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-25 22:20:54,064 INFO L241 Difference]: Finished difference. Result has 65 places, 72 transitions, 733 flow [2021-03-25 22:20:54,064 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=733, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2021-03-25 22:20:54,064 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2021-03-25 22:20:54,064 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:54,064 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 72 transitions, 733 flow [2021-03-25 22:20:54,065 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 72 transitions, 733 flow [2021-03-25 22:20:54,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 72 transitions, 733 flow [2021-03-25 22:20:54,079 INFO L129 PetriNetUnfolder]: 62/189 cut-off events. [2021-03-25 22:20:54,080 INFO L130 PetriNetUnfolder]: For 688/689 co-relation queries the response was YES. [2021-03-25 22:20:54,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 189 events. 62/189 cut-off events. For 688/689 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 972 event pairs, 0 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 685. Up to 56 conditions per place. [2021-03-25 22:20:54,082 INFO L142 LiptonReduction]: Number of co-enabled transitions 400 [2021-03-25 22:20:54,190 INFO L154 LiptonReduction]: Checked pairs total: 138 [2021-03-25 22:20:54,190 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 22:20:54,190 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 126 [2021-03-25 22:20:54,192 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 733 flow [2021-03-25 22:20:54,192 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 22:20:54,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:54,192 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:54,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:20:54,414 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:54,414 INFO L82 PathProgramCache]: Analyzing trace with hash -2147369454, now seen corresponding path program 1 times [2021-03-25 22:20:54,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:54,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163515763] [2021-03-25 22:20:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:54,470 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-25 22:20:54,471 INFO L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-03-25 22:20:54,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 22:20:54,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:54,488 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 22:20:54,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:20:54,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,502 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 22:20:54,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163515763] [2021-03-25 22:20:54,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964097315] [2021-03-25 22:20:54,502 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 22:20:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:54,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 22:20:54,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:20:54,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:54,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:54,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:54,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:54,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:54,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:54,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:54,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:20:54,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:54,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:54,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:20:54,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:54,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:54,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:54,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:54,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:54,627 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 22:20:54,628 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 22:20:54,629 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:54,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:54,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:54,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:54,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:54,646 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 22:20:54,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:20:54,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 22:20:54,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802753718] [2021-03-25 22:20:54,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 22:20:54,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:54,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 22:20:54,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 22:20:54,648 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 149 [2021-03-25 22:20:54,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 733 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 22:20:54,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:54,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 149 [2021-03-25 22:20:54,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:54,919 INFO L129 PetriNetUnfolder]: 82/255 cut-off events. [2021-03-25 22:20:54,919 INFO L130 PetriNetUnfolder]: For 1467/1487 co-relation queries the response was YES. [2021-03-25 22:20:54,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 255 events. 82/255 cut-off events. For 1467/1487 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1431 event pairs, 0 based on Foata normal form. 18/218 useless extension candidates. Maximal degree in co-relation 1024. Up to 88 conditions per place. [2021-03-25 22:20:54,922 INFO L132 encePairwiseOnDemand]: 111/149 looper letters, 10 selfloop transitions, 87 changer transitions 0/106 dead transitions. [2021-03-25 22:20:54,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 1226 flow [2021-03-25 22:20:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 22:20:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 22:20:54,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1234 transitions. [2021-03-25 22:20:54,926 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5521252796420582 [2021-03-25 22:20:54,926 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1234 transitions. [2021-03-25 22:20:54,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1234 transitions. [2021-03-25 22:20:54,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:54,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1234 transitions. [2021-03-25 22:20:54,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 82.26666666666667) internal successors, (1234), 15 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:54,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 149.0) internal successors, (2384), 16 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:54,933 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 149.0) internal successors, (2384), 16 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:54,933 INFO L185 Difference]: Start difference. First operand has 65 places, 72 transitions, 733 flow. Second operand 15 states and 1234 transitions. [2021-03-25 22:20:54,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 1226 flow [2021-03-25 22:20:54,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 1179 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-25 22:20:54,942 INFO L241 Difference]: Finished difference. Result has 80 places, 106 transitions, 1263 flow [2021-03-25 22:20:54,943 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1263, PETRI_PLACES=80, PETRI_TRANSITIONS=106} [2021-03-25 22:20:54,943 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2021-03-25 22:20:54,943 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:54,943 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 106 transitions, 1263 flow [2021-03-25 22:20:54,943 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 106 transitions, 1263 flow [2021-03-25 22:20:54,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 106 transitions, 1263 flow [2021-03-25 22:20:54,966 INFO L129 PetriNetUnfolder]: 82/251 cut-off events. [2021-03-25 22:20:54,966 INFO L130 PetriNetUnfolder]: For 1252/1262 co-relation queries the response was YES. [2021-03-25 22:20:54,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 251 events. 82/251 cut-off events. For 1252/1262 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1391 event pairs, 0 based on Foata normal form. 2/200 useless extension candidates. Maximal degree in co-relation 1050. Up to 88 conditions per place. [2021-03-25 22:20:54,970 INFO L142 LiptonReduction]: Number of co-enabled transitions 590 [2021-03-25 22:20:55,230 INFO L154 LiptonReduction]: Checked pairs total: 656 [2021-03-25 22:20:55,230 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-25 22:20:55,230 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 287 [2021-03-25 22:20:55,231 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 106 transitions, 1263 flow [2021-03-25 22:20:55,231 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 22:20:55,231 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:55,232 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:55,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:20:55,448 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:55,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:55,448 INFO L82 PathProgramCache]: Analyzing trace with hash -687593454, now seen corresponding path program 1 times [2021-03-25 22:20:55,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:55,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956839966] [2021-03-25 22:20:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:55,473 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:20:55,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,479 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:20:55,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:55,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:55,504 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:20:55,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,512 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 22:20:55,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956839966] [2021-03-25 22:20:55,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820036550] [2021-03-25 22:20:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:20:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:55,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:20:55,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:20:55,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:55,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:55,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:55,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:55,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:55,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:55,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:55,620 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 22:20:55,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:20:55,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:20:55,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:55,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:55,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:55,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:55,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:55,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:55,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,651 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 22:20:55,651 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 22:20:55,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:20:55,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:55,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:55,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:20:55,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:55,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 22:20:55,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:20:55,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:55,687 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:20:55,688 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:20:55,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:55,694 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 22:20:55,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:20:55,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:20:55,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922333650] [2021-03-25 22:20:55,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:20:55,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:55,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:20:55,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:20:55,697 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 161 [2021-03-25 22:20:55,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 106 transitions, 1263 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 22:20:55,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:55,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 161 [2021-03-25 22:20:55,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:56,011 INFO L129 PetriNetUnfolder]: 92/293 cut-off events. [2021-03-25 22:20:56,011 INFO L130 PetriNetUnfolder]: For 1749/1773 co-relation queries the response was YES. [2021-03-25 22:20:56,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1409 conditions, 293 events. 92/293 cut-off events. For 1749/1773 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1815 event pairs, 0 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 1373. Up to 113 conditions per place. [2021-03-25 22:20:56,014 INFO L132 encePairwiseOnDemand]: 120/161 looper letters, 56 selfloop transitions, 60 changer transitions 0/125 dead transitions. [2021-03-25 22:20:56,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 1755 flow [2021-03-25 22:20:56,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 22:20:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 22:20:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1149 transitions. [2021-03-25 22:20:56,018 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5097604259094942 [2021-03-25 22:20:56,018 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1149 transitions. [2021-03-25 22:20:56,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1149 transitions. [2021-03-25 22:20:56,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:56,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1149 transitions. [2021-03-25 22:20:56,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.07142857142857) internal successors, (1149), 14 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:56,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 161.0) internal successors, (2415), 15 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:56,024 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 161.0) internal successors, (2415), 15 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:56,024 INFO L185 Difference]: Start difference. First operand has 80 places, 106 transitions, 1263 flow. Second operand 14 states and 1149 transitions. [2021-03-25 22:20:56,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 1755 flow [2021-03-25 22:20:56,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 1605 flow, removed 54 selfloop flow, removed 6 redundant places. [2021-03-25 22:20:56,038 INFO L241 Difference]: Finished difference. Result has 90 places, 119 transitions, 1494 flow [2021-03-25 22:20:56,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1494, PETRI_PLACES=90, PETRI_TRANSITIONS=119} [2021-03-25 22:20:56,038 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2021-03-25 22:20:56,038 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:56,039 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 119 transitions, 1494 flow [2021-03-25 22:20:56,039 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 119 transitions, 1494 flow [2021-03-25 22:20:56,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 119 transitions, 1494 flow [2021-03-25 22:20:56,062 INFO L129 PetriNetUnfolder]: 92/291 cut-off events. [2021-03-25 22:20:56,063 INFO L130 PetriNetUnfolder]: For 1397/1409 co-relation queries the response was YES. [2021-03-25 22:20:56,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 291 events. 92/291 cut-off events. For 1397/1409 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1807 event pairs, 0 based on Foata normal form. 2/230 useless extension candidates. Maximal degree in co-relation 1226. Up to 100 conditions per place. [2021-03-25 22:20:56,066 INFO L142 LiptonReduction]: Number of co-enabled transitions 646 [2021-03-25 22:20:56,477 INFO L154 LiptonReduction]: Checked pairs total: 629 [2021-03-25 22:20:56,478 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-25 22:20:56,478 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 440 [2021-03-25 22:20:56,479 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 119 transitions, 1506 flow [2021-03-25 22:20:56,479 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 22:20:56,479 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:56,479 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:56,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-03-25 22:20:56,696 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash 926917010, now seen corresponding path program 1 times [2021-03-25 22:20:56,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:56,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534686760] [2021-03-25 22:20:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:56,724 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:20:56,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,732 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:20:56,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:56,738 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 22:20:56,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:56,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:56,752 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:20:56,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,758 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 22:20:56,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534686760] [2021-03-25 22:20:56,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273945310] [2021-03-25 22:20:56,759 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 22:20:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:56,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:20:56,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:20:56,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:56,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:56,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:56,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:56,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:56,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:56,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:56,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:56,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:56,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:56,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:56,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:20:56,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:56,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:56,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:20:56,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:56,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:56,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:56,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:56,867 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 22:20:56,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:56,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:20:56,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:56,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:56,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:56,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:56,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:56,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:56,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:56,888 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:20:56,888 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:20:56,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:56,894 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 22:20:56,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:20:56,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:20:56,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002249232] [2021-03-25 22:20:56,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:20:56,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:56,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:20:56,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:20:56,896 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 174 [2021-03-25 22:20:56,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 119 transitions, 1506 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 22:20:56,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:56,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 174 [2021-03-25 22:20:56,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:57,380 INFO L129 PetriNetUnfolder]: 106/333 cut-off events. [2021-03-25 22:20:57,381 INFO L130 PetriNetUnfolder]: For 1995/2048 co-relation queries the response was YES. [2021-03-25 22:20:57,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 333 events. 106/333 cut-off events. For 1995/2048 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2171 event pairs, 0 based on Foata normal form. 24/285 useless extension candidates. Maximal degree in co-relation 1603. Up to 121 conditions per place. [2021-03-25 22:20:57,385 INFO L132 encePairwiseOnDemand]: 124/174 looper letters, 52 selfloop transitions, 88 changer transitions 0/149 dead transitions. [2021-03-25 22:20:57,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 149 transitions, 2127 flow [2021-03-25 22:20:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-25 22:20:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-25 22:20:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1402 transitions. [2021-03-25 22:20:57,389 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.47396889790398916 [2021-03-25 22:20:57,389 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1402 transitions. [2021-03-25 22:20:57,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1402 transitions. [2021-03-25 22:20:57,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:57,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1402 transitions. [2021-03-25 22:20:57,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 82.47058823529412) internal successors, (1402), 17 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:57,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 174.0) internal successors, (3132), 18 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:57,399 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 174.0) internal successors, (3132), 18 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:57,399 INFO L185 Difference]: Start difference. First operand has 90 places, 119 transitions, 1506 flow. Second operand 17 states and 1402 transitions. [2021-03-25 22:20:57,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 149 transitions, 2127 flow [2021-03-25 22:20:57,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 149 transitions, 2042 flow, removed 23 selfloop flow, removed 6 redundant places. [2021-03-25 22:20:57,416 INFO L241 Difference]: Finished difference. Result has 105 places, 143 transitions, 2015 flow [2021-03-25 22:20:57,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2015, PETRI_PLACES=105, PETRI_TRANSITIONS=143} [2021-03-25 22:20:57,417 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2021-03-25 22:20:57,417 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:57,417 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 143 transitions, 2015 flow [2021-03-25 22:20:57,417 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 143 transitions, 2015 flow [2021-03-25 22:20:57,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 143 transitions, 2015 flow [2021-03-25 22:20:57,447 INFO L129 PetriNetUnfolder]: 106/337 cut-off events. [2021-03-25 22:20:57,447 INFO L130 PetriNetUnfolder]: For 1830/1854 co-relation queries the response was YES. [2021-03-25 22:20:57,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 337 events. 106/337 cut-off events. For 1830/1854 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2231 event pairs, 0 based on Foata normal form. 4/268 useless extension candidates. Maximal degree in co-relation 1587. Up to 121 conditions per place. [2021-03-25 22:20:57,452 INFO L142 LiptonReduction]: Number of co-enabled transitions 758 [2021-03-25 22:20:57,727 INFO L154 LiptonReduction]: Checked pairs total: 452 [2021-03-25 22:20:57,727 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 22:20:57,727 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 310 [2021-03-25 22:20:57,728 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 142 transitions, 2012 flow [2021-03-25 22:20:57,729 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 22:20:57,729 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:57,729 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:57,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:20:57,952 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:57,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1313466944, now seen corresponding path program 1 times [2021-03-25 22:20:57,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:57,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030930137] [2021-03-25 22:20:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:57,998 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-25 22:20:58,002 INFO L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-03-25 22:20:58,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-25 22:20:58,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,031 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 22:20:58,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:20:58,038 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 22:20:58,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:20:58,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,053 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 22:20:58,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030930137] [2021-03-25 22:20:58,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239478178] [2021-03-25 22:20:58,053 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 22:20:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:58,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:20:58,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:20:58,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:58,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:58,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:58,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:58,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:58,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:58,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:20:58,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:20:58,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:58,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:20:58,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:20:58,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:58,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:58,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:20:58,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:58,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:58,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:20:58,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:58,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:58,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:58,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:58,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:58,203 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 22:20:58,203 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 22:20:58,208 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:58,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:58,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:58,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:58,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:20:58,226 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 22:20:58,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:20:58,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 22:20:58,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429479685] [2021-03-25 22:20:58,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 22:20:58,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:58,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 22:20:58,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-03-25 22:20:58,228 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2021-03-25 22:20:58,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 142 transitions, 2012 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 22:20:58,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:58,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2021-03-25 22:20:58,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:20:58,814 INFO L129 PetriNetUnfolder]: 136/440 cut-off events. [2021-03-25 22:20:58,814 INFO L130 PetriNetUnfolder]: For 3756/3818 co-relation queries the response was YES. [2021-03-25 22:20:58,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 440 events. 136/440 cut-off events. For 3756/3818 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2960 event pairs, 0 based on Foata normal form. 28/371 useless extension candidates. Maximal degree in co-relation 2291. Up to 172 conditions per place. [2021-03-25 22:20:58,820 INFO L132 encePairwiseOnDemand]: 117/183 looper letters, 16 selfloop transitions, 165 changer transitions 0/190 dead transitions. [2021-03-25 22:20:58,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 190 transitions, 3020 flow [2021-03-25 22:20:58,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-25 22:20:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-25 22:20:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1598 transitions. [2021-03-25 22:20:58,825 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4595916019557089 [2021-03-25 22:20:58,825 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1598 transitions. [2021-03-25 22:20:58,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1598 transitions. [2021-03-25 22:20:58,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:20:58,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1598 transitions. [2021-03-25 22:20:58,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 84.10526315789474) internal successors, (1598), 19 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:58,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:58,834 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:20:58,834 INFO L185 Difference]: Start difference. First operand has 105 places, 142 transitions, 2012 flow. Second operand 19 states and 1598 transitions. [2021-03-25 22:20:58,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 190 transitions, 3020 flow [2021-03-25 22:20:58,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 190 transitions, 2935 flow, removed 24 selfloop flow, removed 7 redundant places. [2021-03-25 22:20:58,859 INFO L241 Difference]: Finished difference. Result has 121 places, 190 transitions, 3083 flow [2021-03-25 22:20:58,860 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3083, PETRI_PLACES=121, PETRI_TRANSITIONS=190} [2021-03-25 22:20:58,860 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2021-03-25 22:20:58,860 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:20:58,860 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 190 transitions, 3083 flow [2021-03-25 22:20:58,860 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 190 transitions, 3083 flow [2021-03-25 22:20:58,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 190 transitions, 3083 flow [2021-03-25 22:20:58,901 INFO L129 PetriNetUnfolder]: 136/442 cut-off events. [2021-03-25 22:20:58,901 INFO L130 PetriNetUnfolder]: For 3115/3136 co-relation queries the response was YES. [2021-03-25 22:20:58,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 442 events. 136/442 cut-off events. For 3115/3136 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2996 event pairs, 0 based on Foata normal form. 3/347 useless extension candidates. Maximal degree in co-relation 2366. Up to 172 conditions per place. [2021-03-25 22:20:58,907 INFO L142 LiptonReduction]: Number of co-enabled transitions 1002 [2021-03-25 22:20:59,276 INFO L154 LiptonReduction]: Checked pairs total: 1734 [2021-03-25 22:20:59,276 INFO L156 LiptonReduction]: Total number of compositions: 16 [2021-03-25 22:20:59,276 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 416 [2021-03-25 22:20:59,277 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 190 transitions, 3083 flow [2021-03-25 22:20:59,278 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 22:20:59,278 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:20:59,278 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:20:59,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:20:59,500 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:20:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:20:59,500 INFO L82 PathProgramCache]: Analyzing trace with hash 981396895, now seen corresponding path program 1 times [2021-03-25 22:20:59,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:20:59,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389812072] [2021-03-25 22:20:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:20:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:59,544 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:20:59,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,550 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-25 22:20:59,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:20:59,558 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:20:59,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:59,567 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:20:59,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:59,576 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:20:59,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,586 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 22:20:59,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389812072] [2021-03-25 22:20:59,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142104466] [2021-03-25 22:20:59,586 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 22:20:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:20:59,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:20:59,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:20:59,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:20:59,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:20:59,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:20:59,676 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 22:20:59,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:20:59,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:20:59,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:59,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:59,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:59,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:59,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:20:59,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:20:59,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:59,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:59,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:59,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:59,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:59,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:59,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:59,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:59,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:59,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:20:59,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:59,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:59,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:59,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:20:59,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:20:59,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:20:59,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:20:59,730 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:20:59,730 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:20:59,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:20:59,737 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 22:20:59,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:20:59,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:20:59,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640720890] [2021-03-25 22:20:59,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:20:59,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:20:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:20:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:20:59,740 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2021-03-25 22:20:59,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 190 transitions, 3083 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 22:20:59,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:20:59,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2021-03-25 22:20:59,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:00,052 INFO L129 PetriNetUnfolder]: 140/458 cut-off events. [2021-03-25 22:21:00,052 INFO L130 PetriNetUnfolder]: For 3728/3780 co-relation queries the response was YES. [2021-03-25 22:21:00,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 458 events. 140/458 cut-off events. For 3728/3780 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3236 event pairs, 0 based on Foata normal form. 18/374 useless extension candidates. Maximal degree in co-relation 2703. Up to 230 conditions per place. [2021-03-25 22:21:00,058 INFO L132 encePairwiseOnDemand]: 173/199 looper letters, 159 selfloop transitions, 34 changer transitions 0/202 dead transitions. [2021-03-25 22:21:00,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 202 transitions, 3652 flow [2021-03-25 22:21:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:21:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:21:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 637 transitions. [2021-03-25 22:21:00,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.457286432160804 [2021-03-25 22:21:00,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 637 transitions. [2021-03-25 22:21:00,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 637 transitions. [2021-03-25 22:21:00,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:00,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 637 transitions. [2021-03-25 22:21:00,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:00,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:00,063 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:00,063 INFO L185 Difference]: Start difference. First operand has 121 places, 190 transitions, 3083 flow. Second operand 7 states and 637 transitions. [2021-03-25 22:21:00,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 202 transitions, 3652 flow [2021-03-25 22:21:00,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 202 transitions, 3440 flow, removed 73 selfloop flow, removed 8 redundant places. [2021-03-25 22:21:00,098 INFO L241 Difference]: Finished difference. Result has 121 places, 194 transitions, 3071 flow [2021-03-25 22:21:00,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3071, PETRI_PLACES=121, PETRI_TRANSITIONS=194} [2021-03-25 22:21:00,098 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2021-03-25 22:21:00,098 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:00,098 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 194 transitions, 3071 flow [2021-03-25 22:21:00,098 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 194 transitions, 3071 flow [2021-03-25 22:21:00,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 194 transitions, 3071 flow [2021-03-25 22:21:00,139 INFO L129 PetriNetUnfolder]: 140/458 cut-off events. [2021-03-25 22:21:00,139 INFO L130 PetriNetUnfolder]: For 2956/3001 co-relation queries the response was YES. [2021-03-25 22:21:00,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 458 events. 140/458 cut-off events. For 2956/3001 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3249 event pairs, 0 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 2350. Up to 174 conditions per place. [2021-03-25 22:21:00,146 INFO L142 LiptonReduction]: Number of co-enabled transitions 1022 [2021-03-25 22:21:00,485 INFO L154 LiptonReduction]: Checked pairs total: 876 [2021-03-25 22:21:00,485 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 22:21:00,485 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 387 [2021-03-25 22:21:00,486 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 194 transitions, 3079 flow [2021-03-25 22:21:00,487 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 22:21:00,487 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:00,487 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:00,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-03-25 22:21:00,709 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:00,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:00,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1069921332, now seen corresponding path program 1 times [2021-03-25 22:21:00,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:00,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853383578] [2021-03-25 22:21:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:00,744 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:00,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,751 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:00,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:00,758 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:00,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:00,766 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:00,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:00,774 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:00,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,782 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 22:21:00,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853383578] [2021-03-25 22:21:00,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493314787] [2021-03-25 22:21:00,783 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 22:21:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:00,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:00,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:00,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:00,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:00,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:00,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:00,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:00,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:00,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:00,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:00,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:00,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:00,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:00,876 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 22:21:00,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:00,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:00,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:00,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:00,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:00,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:00,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:00,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:00,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:00,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:00,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:00,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:00,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:00,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:00,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:00,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:00,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:00,918 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:00,919 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:00,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:00,925 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 22:21:00,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:00,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:00,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682069384] [2021-03-25 22:21:00,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:00,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:00,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:00,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:00,927 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 209 [2021-03-25 22:21:00,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 194 transitions, 3079 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 22:21:00,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:00,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 209 [2021-03-25 22:21:00,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:01,436 INFO L129 PetriNetUnfolder]: 144/474 cut-off events. [2021-03-25 22:21:01,437 INFO L130 PetriNetUnfolder]: For 3512/3554 co-relation queries the response was YES. [2021-03-25 22:21:01,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 474 events. 144/474 cut-off events. For 3512/3554 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3408 event pairs, 0 based on Foata normal form. 16/381 useless extension candidates. Maximal degree in co-relation 2692. Up to 204 conditions per place. [2021-03-25 22:21:01,442 INFO L132 encePairwiseOnDemand]: 165/209 looper letters, 130 selfloop transitions, 66 changer transitions 0/205 dead transitions. [2021-03-25 22:21:01,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 205 transitions, 3609 flow [2021-03-25 22:21:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:21:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:21:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 726 transitions. [2021-03-25 22:21:01,445 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2021-03-25 22:21:01,445 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 726 transitions. [2021-03-25 22:21:01,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 726 transitions. [2021-03-25 22:21:01,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:01,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 726 transitions. [2021-03-25 22:21:01,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.75) internal successors, (726), 8 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:01,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:01,451 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:01,451 INFO L185 Difference]: Start difference. First operand has 121 places, 194 transitions, 3079 flow. Second operand 8 states and 726 transitions. [2021-03-25 22:21:01,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 205 transitions, 3609 flow [2021-03-25 22:21:01,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 205 transitions, 3561 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-25 22:21:01,482 INFO L241 Difference]: Finished difference. Result has 127 places, 198 transitions, 3300 flow [2021-03-25 22:21:01,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3300, PETRI_PLACES=127, PETRI_TRANSITIONS=198} [2021-03-25 22:21:01,482 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2021-03-25 22:21:01,482 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:01,483 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 198 transitions, 3300 flow [2021-03-25 22:21:01,483 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 198 transitions, 3300 flow [2021-03-25 22:21:01,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 198 transitions, 3300 flow [2021-03-25 22:21:01,524 INFO L129 PetriNetUnfolder]: 144/474 cut-off events. [2021-03-25 22:21:01,524 INFO L130 PetriNetUnfolder]: For 3274/3304 co-relation queries the response was YES. [2021-03-25 22:21:01,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 474 events. 144/474 cut-off events. For 3274/3304 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3447 event pairs, 0 based on Foata normal form. 4/369 useless extension candidates. Maximal degree in co-relation 2526. Up to 181 conditions per place. [2021-03-25 22:21:01,531 INFO L142 LiptonReduction]: Number of co-enabled transitions 1040 [2021-03-25 22:21:01,608 INFO L154 LiptonReduction]: Checked pairs total: 212 [2021-03-25 22:21:01,609 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:21:01,609 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 127 [2021-03-25 22:21:01,611 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 198 transitions, 3300 flow [2021-03-25 22:21:01,611 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 22:21:01,611 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:01,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:01,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-03-25 22:21:01,825 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:01,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:01,825 INFO L82 PathProgramCache]: Analyzing trace with hash 399621910, now seen corresponding path program 1 times [2021-03-25 22:21:01,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:01,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113830333] [2021-03-25 22:21:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:01,842 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:01,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,847 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-25 22:21:01,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:01,854 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:01,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:01,862 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:01,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:01,870 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:01,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,878 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 22:21:01,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113830333] [2021-03-25 22:21:01,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936016657] [2021-03-25 22:21:01,878 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 22:21:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:01,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:01,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:01,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:01,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:01,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:01,962 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 22:21:01,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:01,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:01,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:01,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:01,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:01,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:01,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:01,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:01,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:01,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:01,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:01,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:01,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:01,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:01,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:01,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:02,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:21:02,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:02,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:21:02,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:02,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:02,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:02,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:02,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:02,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:02,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,024 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:02,024 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:02,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:02,030 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 22:21:02,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:02,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:02,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139226877] [2021-03-25 22:21:02,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:02,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:02,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:02,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:02,032 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 211 [2021-03-25 22:21:02,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 198 transitions, 3300 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 22:21:02,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:02,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 211 [2021-03-25 22:21:02,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:02,355 INFO L129 PetriNetUnfolder]: 146/482 cut-off events. [2021-03-25 22:21:02,355 INFO L130 PetriNetUnfolder]: For 3963/4005 co-relation queries the response was YES. [2021-03-25 22:21:02,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 482 events. 146/482 cut-off events. For 3963/4005 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3495 event pairs, 0 based on Foata normal form. 16/387 useless extension candidates. Maximal degree in co-relation 2834. Up to 239 conditions per place. [2021-03-25 22:21:02,362 INFO L132 encePairwiseOnDemand]: 183/211 looper letters, 163 selfloop transitions, 37 changer transitions 0/209 dead transitions. [2021-03-25 22:21:02,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 209 transitions, 3849 flow [2021-03-25 22:21:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:21:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:21:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2021-03-25 22:21:02,363 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.43872714962762355 [2021-03-25 22:21:02,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2021-03-25 22:21:02,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2021-03-25 22:21:02,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:02,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2021-03-25 22:21:02,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:02,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:02,367 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:02,367 INFO L185 Difference]: Start difference. First operand has 127 places, 198 transitions, 3300 flow. Second operand 7 states and 648 transitions. [2021-03-25 22:21:02,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 209 transitions, 3849 flow [2021-03-25 22:21:02,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 209 transitions, 3782 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-25 22:21:02,405 INFO L241 Difference]: Finished difference. Result has 132 places, 201 transitions, 3403 flow [2021-03-25 22:21:02,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3403, PETRI_PLACES=132, PETRI_TRANSITIONS=201} [2021-03-25 22:21:02,406 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2021-03-25 22:21:02,406 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:02,406 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 201 transitions, 3403 flow [2021-03-25 22:21:02,406 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 201 transitions, 3403 flow [2021-03-25 22:21:02,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 201 transitions, 3403 flow [2021-03-25 22:21:02,448 INFO L129 PetriNetUnfolder]: 146/482 cut-off events. [2021-03-25 22:21:02,448 INFO L130 PetriNetUnfolder]: For 3712/3779 co-relation queries the response was YES. [2021-03-25 22:21:02,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 482 events. 146/482 cut-off events. For 3712/3779 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3525 event pairs, 0 based on Foata normal form. 4/373 useless extension candidates. Maximal degree in co-relation 2594. Up to 185 conditions per place. [2021-03-25 22:21:02,456 INFO L142 LiptonReduction]: Number of co-enabled transitions 1054 [2021-03-25 22:21:02,507 INFO L154 LiptonReduction]: Checked pairs total: 88 [2021-03-25 22:21:02,508 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:21:02,508 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 102 [2021-03-25 22:21:02,509 INFO L480 AbstractCegarLoop]: Abstraction has has 132 places, 201 transitions, 3403 flow [2021-03-25 22:21:02,509 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 22:21:02,509 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:02,509 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:02,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-25 22:21:02,724 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:02,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:02,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1073204046, now seen corresponding path program 1 times [2021-03-25 22:21:02,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:02,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719223192] [2021-03-25 22:21:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:02,759 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:02,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,764 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:02,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:02,770 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:02,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:02,778 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:02,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:02,786 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:02,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,793 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 22:21:02,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719223192] [2021-03-25 22:21:02,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756253308] [2021-03-25 22:21:02,793 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 22:21:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:02,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:02,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:02,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:02,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:02,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:02,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:02,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:02,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:02,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:02,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:02,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:02,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:02,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:02,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:02,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:02,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:02,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:02,915 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 22:21:02,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:02,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:02,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:02,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:02,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:02,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:02,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:02,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:02,939 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:02,940 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:02,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:02,946 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 22:21:02,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:02,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:02,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761670695] [2021-03-25 22:21:02,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:02,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:02,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:02,951 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 212 [2021-03-25 22:21:02,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 201 transitions, 3403 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 22:21:02,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:02,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 212 [2021-03-25 22:21:02,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:03,372 INFO L129 PetriNetUnfolder]: 149/494 cut-off events. [2021-03-25 22:21:03,372 INFO L130 PetriNetUnfolder]: For 4257/4299 co-relation queries the response was YES. [2021-03-25 22:21:03,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 494 events. 149/494 cut-off events. For 4257/4299 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3627 event pairs, 0 based on Foata normal form. 16/396 useless extension candidates. Maximal degree in co-relation 2926. Up to 207 conditions per place. [2021-03-25 22:21:03,379 INFO L132 encePairwiseOnDemand]: 165/212 looper letters, 132 selfloop transitions, 74 changer transitions 0/215 dead transitions. [2021-03-25 22:21:03,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 215 transitions, 3982 flow [2021-03-25 22:21:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:21:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:21:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 811 transitions. [2021-03-25 22:21:03,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4250524109014675 [2021-03-25 22:21:03,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 811 transitions. [2021-03-25 22:21:03,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 811 transitions. [2021-03-25 22:21:03,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:03,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 811 transitions. [2021-03-25 22:21:03,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.11111111111111) internal successors, (811), 9 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:03,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:03,386 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:03,386 INFO L185 Difference]: Start difference. First operand has 132 places, 201 transitions, 3403 flow. Second operand 9 states and 811 transitions. [2021-03-25 22:21:03,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 215 transitions, 3982 flow [2021-03-25 22:21:03,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 215 transitions, 3915 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-25 22:21:03,425 INFO L241 Difference]: Finished difference. Result has 139 places, 208 transitions, 3666 flow [2021-03-25 22:21:03,425 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3336, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3666, PETRI_PLACES=139, PETRI_TRANSITIONS=208} [2021-03-25 22:21:03,425 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2021-03-25 22:21:03,425 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:03,425 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 208 transitions, 3666 flow [2021-03-25 22:21:03,426 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 208 transitions, 3666 flow [2021-03-25 22:21:03,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 208 transitions, 3666 flow [2021-03-25 22:21:03,469 INFO L129 PetriNetUnfolder]: 149/494 cut-off events. [2021-03-25 22:21:03,470 INFO L130 PetriNetUnfolder]: For 4193/4236 co-relation queries the response was YES. [2021-03-25 22:21:03,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 494 events. 149/494 cut-off events. For 4193/4236 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3659 event pairs, 0 based on Foata normal form. 5/385 useless extension candidates. Maximal degree in co-relation 2764. Up to 189 conditions per place. [2021-03-25 22:21:03,477 INFO L142 LiptonReduction]: Number of co-enabled transitions 1088 [2021-03-25 22:21:03,575 INFO L154 LiptonReduction]: Checked pairs total: 314 [2021-03-25 22:21:03,575 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 22:21:03,575 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 150 [2021-03-25 22:21:03,578 INFO L480 AbstractCegarLoop]: Abstraction has has 139 places, 208 transitions, 3666 flow [2021-03-25 22:21:03,578 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 22:21:03,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:03,578 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:03,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-25 22:21:03,800 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:03,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1181214467, now seen corresponding path program 1 times [2021-03-25 22:21:03,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:03,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26087894] [2021-03-25 22:21:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:03,835 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:03,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,841 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:03,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:03,847 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 22:21:03,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:03,863 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:03,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,870 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 22:21:03,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26087894] [2021-03-25 22:21:03,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113399952] [2021-03-25 22:21:03,870 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 22:21:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:03,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:03,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:03,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:03,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:03,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:03,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:03,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:03,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:03,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:03,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:03,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:03,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:03,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:03,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:03,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:03,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:03,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:03,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:03,991 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 22:21:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:03,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:04,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:04,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:04,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:04,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:04,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:04,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:04,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:04,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:04,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:04,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:04,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:04,010 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:04,010 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:04,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:04,018 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 22:21:04,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:04,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:04,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227281382] [2021-03-25 22:21:04,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:04,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:04,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:04,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:04,020 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 215 [2021-03-25 22:21:04,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 208 transitions, 3666 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 22:21:04,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:04,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 215 [2021-03-25 22:21:04,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:04,668 INFO L129 PetriNetUnfolder]: 157/514 cut-off events. [2021-03-25 22:21:04,668 INFO L130 PetriNetUnfolder]: For 4728/4770 co-relation queries the response was YES. [2021-03-25 22:21:04,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 514 events. 157/514 cut-off events. For 4728/4770 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3804 event pairs, 0 based on Foata normal form. 22/419 useless extension candidates. Maximal degree in co-relation 3157. Up to 203 conditions per place. [2021-03-25 22:21:04,673 INFO L132 encePairwiseOnDemand]: 145/215 looper letters, 92 selfloop transitions, 129 changer transitions 0/230 dead transitions. [2021-03-25 22:21:04,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 230 transitions, 4395 flow [2021-03-25 22:21:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-25 22:21:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-25 22:21:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1449 transitions. [2021-03-25 22:21:04,676 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.39644322845417235 [2021-03-25 22:21:04,676 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1449 transitions. [2021-03-25 22:21:04,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1449 transitions. [2021-03-25 22:21:04,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:04,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1449 transitions. [2021-03-25 22:21:04,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 85.23529411764706) internal successors, (1449), 17 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:04,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 215.0) internal successors, (3870), 18 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:04,683 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 215.0) internal successors, (3870), 18 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:04,683 INFO L185 Difference]: Start difference. First operand has 139 places, 208 transitions, 3666 flow. Second operand 17 states and 1449 transitions. [2021-03-25 22:21:04,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 230 transitions, 4395 flow [2021-03-25 22:21:04,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 230 transitions, 4296 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-25 22:21:04,720 INFO L241 Difference]: Finished difference. Result has 157 places, 221 transitions, 4188 flow [2021-03-25 22:21:04,721 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4188, PETRI_PLACES=157, PETRI_TRANSITIONS=221} [2021-03-25 22:21:04,721 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2021-03-25 22:21:04,721 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:04,721 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 221 transitions, 4188 flow [2021-03-25 22:21:04,721 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 221 transitions, 4188 flow [2021-03-25 22:21:04,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 221 transitions, 4188 flow [2021-03-25 22:21:04,801 INFO L129 PetriNetUnfolder]: 157/514 cut-off events. [2021-03-25 22:21:04,802 INFO L130 PetriNetUnfolder]: For 5078/5122 co-relation queries the response was YES. [2021-03-25 22:21:04,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 514 events. 157/514 cut-off events. For 5078/5122 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3843 event pairs, 0 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 3072. Up to 200 conditions per place. [2021-03-25 22:21:04,809 INFO L142 LiptonReduction]: Number of co-enabled transitions 1148 [2021-03-25 22:21:05,032 INFO L154 LiptonReduction]: Checked pairs total: 247 [2021-03-25 22:21:05,033 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 22:21:05,033 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 312 [2021-03-25 22:21:05,034 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 221 transitions, 4193 flow [2021-03-25 22:21:05,034 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 22:21:05,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:05,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:05,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:21:05,256 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:05,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1181093319, now seen corresponding path program 1 times [2021-03-25 22:21:05,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:05,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538086380] [2021-03-25 22:21:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:05,284 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:05,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,290 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:05,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:05,296 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 22:21:05,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,303 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:05,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:05,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,316 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 22:21:05,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538086380] [2021-03-25 22:21:05,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906338634] [2021-03-25 22:21:05,316 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 22:21:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:05,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:05,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:05,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:05,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:05,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:05,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:05,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:05,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:05,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:05,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:05,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:05,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:05,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:05,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:05,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:05,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:05,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:05,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:05,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:05,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:05,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:05,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:05,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:05,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:05,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:05,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:05,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:05,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:05,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:21:05,434 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-03-25 22:21:05,435 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:05,435 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:05,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:05,441 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 22:21:05,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:05,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:05,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714432231] [2021-03-25 22:21:05,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:05,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:05,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:05,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:05,443 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 220 [2021-03-25 22:21:05,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 221 transitions, 4193 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 22:21:05,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:05,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 220 [2021-03-25 22:21:05,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:06,246 INFO L129 PetriNetUnfolder]: 194/641 cut-off events. [2021-03-25 22:21:06,246 INFO L130 PetriNetUnfolder]: For 8133/8190 co-relation queries the response was YES. [2021-03-25 22:21:06,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 641 events. 194/641 cut-off events. For 8133/8190 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4980 event pairs, 0 based on Foata normal form. 34/530 useless extension candidates. Maximal degree in co-relation 4153. Up to 263 conditions per place. [2021-03-25 22:21:06,252 INFO L132 encePairwiseOnDemand]: 131/220 looper letters, 46 selfloop transitions, 219 changer transitions 0/274 dead transitions. [2021-03-25 22:21:06,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 274 transitions, 5813 flow [2021-03-25 22:21:06,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-25 22:21:06,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-03-25 22:21:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1714 transitions. [2021-03-25 22:21:06,257 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38954545454545453 [2021-03-25 22:21:06,257 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1714 transitions. [2021-03-25 22:21:06,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1714 transitions. [2021-03-25 22:21:06,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:06,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1714 transitions. [2021-03-25 22:21:06,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 85.7) internal successors, (1714), 20 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:06,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:06,265 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:06,265 INFO L185 Difference]: Start difference. First operand has 157 places, 221 transitions, 4193 flow. Second operand 20 states and 1714 transitions. [2021-03-25 22:21:06,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 274 transitions, 5813 flow [2021-03-25 22:21:06,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 274 transitions, 5582 flow, removed 34 selfloop flow, removed 11 redundant places. [2021-03-25 22:21:06,315 INFO L241 Difference]: Finished difference. Result has 169 places, 272 transitions, 5718 flow [2021-03-25 22:21:06,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=3984, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5718, PETRI_PLACES=169, PETRI_TRANSITIONS=272} [2021-03-25 22:21:06,316 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2021-03-25 22:21:06,316 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:06,316 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 272 transitions, 5718 flow [2021-03-25 22:21:06,316 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 272 transitions, 5718 flow [2021-03-25 22:21:06,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 272 transitions, 5718 flow [2021-03-25 22:21:06,375 INFO L129 PetriNetUnfolder]: 194/639 cut-off events. [2021-03-25 22:21:06,375 INFO L130 PetriNetUnfolder]: For 8061/8162 co-relation queries the response was YES. [2021-03-25 22:21:06,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 639 events. 194/639 cut-off events. For 8061/8162 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4977 event pairs, 0 based on Foata normal form. 10/504 useless extension candidates. Maximal degree in co-relation 4143. Up to 258 conditions per place. [2021-03-25 22:21:06,383 INFO L142 LiptonReduction]: Number of co-enabled transitions 1374 [2021-03-25 22:21:06,977 INFO L154 LiptonReduction]: Checked pairs total: 2853 [2021-03-25 22:21:06,977 INFO L156 LiptonReduction]: Total number of compositions: 19 [2021-03-25 22:21:06,977 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 661 [2021-03-25 22:21:06,979 INFO L480 AbstractCegarLoop]: Abstraction has has 169 places, 272 transitions, 5728 flow [2021-03-25 22:21:06,979 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 22:21:06,979 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:06,979 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:07,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-03-25 22:21:07,200 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:07,200 INFO L82 PathProgramCache]: Analyzing trace with hash 400702198, now seen corresponding path program 1 times [2021-03-25 22:21:07,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:07,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839106065] [2021-03-25 22:21:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:07,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,220 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 22:21:07,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839106065] [2021-03-25 22:21:07,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440943708] [2021-03-25 22:21:07,221 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 22:21:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:07,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 22:21:07,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:07,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:07,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:07,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:07,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:07,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:07,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:07,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:07,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:07,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:07,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:07,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:07,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:07,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:07,329 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 22:21:07,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:07,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:07,331 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 22:21:07,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-25 22:21:07,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-03-25 22:21:07,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328047556] [2021-03-25 22:21:07,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:21:07,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:21:07,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-25 22:21:07,333 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 239 [2021-03-25 22:21:07,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 272 transitions, 5728 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:07,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:07,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 239 [2021-03-25 22:21:07,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:07,561 INFO L129 PetriNetUnfolder]: 202/659 cut-off events. [2021-03-25 22:21:07,561 INFO L130 PetriNetUnfolder]: For 15960/16266 co-relation queries the response was YES. [2021-03-25 22:21:07,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4672 conditions, 659 events. 202/659 cut-off events. For 15960/16266 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5175 event pairs, 0 based on Foata normal form. 167/682 useless extension candidates. Maximal degree in co-relation 4608. Up to 271 conditions per place. [2021-03-25 22:21:07,567 INFO L132 encePairwiseOnDemand]: 231/239 looper letters, 148 selfloop transitions, 11 changer transitions 1/277 dead transitions. [2021-03-25 22:21:07,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 277 transitions, 6115 flow [2021-03-25 22:21:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:21:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:21:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2021-03-25 22:21:07,568 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6661087866108787 [2021-03-25 22:21:07,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2021-03-25 22:21:07,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2021-03-25 22:21:07,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:07,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2021-03-25 22:21:07,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:07,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:07,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:07,571 INFO L185 Difference]: Start difference. First operand has 169 places, 272 transitions, 5728 flow. Second operand 5 states and 796 transitions. [2021-03-25 22:21:07,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 277 transitions, 6115 flow [2021-03-25 22:21:07,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 277 transitions, 5717 flow, removed 115 selfloop flow, removed 18 redundant places. [2021-03-25 22:21:07,639 INFO L241 Difference]: Finished difference. Result has 157 places, 275 transitions, 5425 flow [2021-03-25 22:21:07,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5294, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5425, PETRI_PLACES=157, PETRI_TRANSITIONS=275} [2021-03-25 22:21:07,639 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2021-03-25 22:21:07,639 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:07,640 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 275 transitions, 5425 flow [2021-03-25 22:21:07,640 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 275 transitions, 5425 flow [2021-03-25 22:21:07,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 275 transitions, 5425 flow [2021-03-25 22:21:07,697 INFO L129 PetriNetUnfolder]: 201/656 cut-off events. [2021-03-25 22:21:07,697 INFO L130 PetriNetUnfolder]: For 7752/7866 co-relation queries the response was YES. [2021-03-25 22:21:07,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 656 events. 201/656 cut-off events. For 7752/7866 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5222 event pairs, 0 based on Foata normal form. 16/564 useless extension candidates. Maximal degree in co-relation 4119. Up to 259 conditions per place. [2021-03-25 22:21:07,704 INFO L142 LiptonReduction]: Number of co-enabled transitions 1406 [2021-03-25 22:21:07,963 INFO L154 LiptonReduction]: Checked pairs total: 790 [2021-03-25 22:21:07,963 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 22:21:07,964 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 325 [2021-03-25 22:21:07,965 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 275 transitions, 5431 flow [2021-03-25 22:21:07,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:07,965 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:07,965 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:08,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:21:08,168 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:08,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:08,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1101354898, now seen corresponding path program 1 times [2021-03-25 22:21:08,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:08,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770924179] [2021-03-25 22:21:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:08,185 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:08,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,190 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:08,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:08,196 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:08,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:08,204 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:08,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:08,212 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:08,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,219 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 22:21:08,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770924179] [2021-03-25 22:21:08,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281908829] [2021-03-25 22:21:08,219 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 22:21:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:08,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:08,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:08,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:08,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:08,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:08,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:08,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:08,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:08,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:08,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:08,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:08,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:08,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:08,334 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-25 22:21:08,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:08,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:08,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:08,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:08,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:08,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:08,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:08,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:08,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:08,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:08,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:08,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:08,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:08,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:08,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:08,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:08,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:08,379 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:08,380 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:08,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:08,385 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 22:21:08,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:08,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:08,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962179374] [2021-03-25 22:21:08,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:08,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:08,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:08,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:08,386 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 247 [2021-03-25 22:21:08,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 275 transitions, 5431 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 22:21:08,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:08,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 247 [2021-03-25 22:21:08,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:08,871 INFO L129 PetriNetUnfolder]: 201/661 cut-off events. [2021-03-25 22:21:08,871 INFO L130 PetriNetUnfolder]: For 8928/8976 co-relation queries the response was YES. [2021-03-25 22:21:08,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4602 conditions, 661 events. 201/661 cut-off events. For 8928/8976 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5216 event pairs, 0 based on Foata normal form. 12/567 useless extension candidates. Maximal degree in co-relation 4541. Up to 295 conditions per place. [2021-03-25 22:21:08,879 INFO L132 encePairwiseOnDemand]: 191/247 looper letters, 190 selfloop transitions, 88 changer transitions 0/289 dead transitions. [2021-03-25 22:21:08,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 289 transitions, 6161 flow [2021-03-25 22:21:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:21:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:21:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 759 transitions. [2021-03-25 22:21:08,881 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3841093117408907 [2021-03-25 22:21:08,881 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 759 transitions. [2021-03-25 22:21:08,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 759 transitions. [2021-03-25 22:21:08,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:08,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 759 transitions. [2021-03-25 22:21:08,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.875) internal successors, (759), 8 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:08,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:08,885 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 247.0) internal successors, (2223), 9 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:08,885 INFO L185 Difference]: Start difference. First operand has 157 places, 275 transitions, 5431 flow. Second operand 8 states and 759 transitions. [2021-03-25 22:21:08,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 289 transitions, 6161 flow [2021-03-25 22:21:08,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 289 transitions, 6084 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-25 22:21:08,940 INFO L241 Difference]: Finished difference. Result has 163 places, 277 transitions, 5653 flow [2021-03-25 22:21:08,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=5356, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5653, PETRI_PLACES=163, PETRI_TRANSITIONS=277} [2021-03-25 22:21:08,941 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2021-03-25 22:21:08,941 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:08,941 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 277 transitions, 5653 flow [2021-03-25 22:21:08,941 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 277 transitions, 5653 flow [2021-03-25 22:21:08,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 277 transitions, 5653 flow [2021-03-25 22:21:08,993 INFO L129 PetriNetUnfolder]: 202/663 cut-off events. [2021-03-25 22:21:08,993 INFO L130 PetriNetUnfolder]: For 8338/8427 co-relation queries the response was YES. [2021-03-25 22:21:08,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 663 events. 202/663 cut-off events. For 8338/8427 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5287 event pairs, 0 based on Foata normal form. 16/572 useless extension candidates. Maximal degree in co-relation 4283. Up to 263 conditions per place. [2021-03-25 22:21:09,002 INFO L142 LiptonReduction]: Number of co-enabled transitions 1416 [2021-03-25 22:21:09,087 INFO L154 LiptonReduction]: Checked pairs total: 230 [2021-03-25 22:21:09,087 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:21:09,087 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 146 [2021-03-25 22:21:09,088 INFO L480 AbstractCegarLoop]: Abstraction has has 163 places, 277 transitions, 5655 flow [2021-03-25 22:21:09,088 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 22:21:09,088 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:09,088 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:09,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-03-25 22:21:09,290 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:09,291 INFO L82 PathProgramCache]: Analyzing trace with hash 291401765, now seen corresponding path program 1 times [2021-03-25 22:21:09,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:09,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311285683] [2021-03-25 22:21:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:09,329 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:09,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:09,333 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:09,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:09,339 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:09,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:09,345 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:09,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:09,351 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 22:21:09,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311285683] [2021-03-25 22:21:09,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:21:09,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:21:09,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186119832] [2021-03-25 22:21:09,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 22:21:09,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:09,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 22:21:09,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 22:21:09,354 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 249 [2021-03-25 22:21:09,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 277 transitions, 5655 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 22:21:09,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:09,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 249 [2021-03-25 22:21:09,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:09,742 INFO L129 PetriNetUnfolder]: 200/662 cut-off events. [2021-03-25 22:21:09,742 INFO L130 PetriNetUnfolder]: For 8795/8844 co-relation queries the response was YES. [2021-03-25 22:21:09,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4689 conditions, 662 events. 200/662 cut-off events. For 8795/8844 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5199 event pairs, 0 based on Foata normal form. 12/567 useless extension candidates. Maximal degree in co-relation 4626. Up to 297 conditions per place. [2021-03-25 22:21:09,783 INFO L132 encePairwiseOnDemand]: 193/249 looper letters, 193 selfloop transitions, 87 changer transitions 4/295 dead transitions. [2021-03-25 22:21:09,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 295 transitions, 6436 flow [2021-03-25 22:21:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:21:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:21:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 841 transitions. [2021-03-25 22:21:09,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.37527889335118253 [2021-03-25 22:21:09,785 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 841 transitions. [2021-03-25 22:21:09,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 841 transitions. [2021-03-25 22:21:09,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:09,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 841 transitions. [2021-03-25 22:21:09,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.44444444444444) internal successors, (841), 9 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:09,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:09,789 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:09,789 INFO L185 Difference]: Start difference. First operand has 163 places, 277 transitions, 5655 flow. Second operand 9 states and 841 transitions. [2021-03-25 22:21:09,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 295 transitions, 6436 flow [2021-03-25 22:21:09,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 295 transitions, 6343 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-25 22:21:09,840 INFO L241 Difference]: Finished difference. Result has 171 places, 280 transitions, 5880 flow [2021-03-25 22:21:09,841 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=5562, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5880, PETRI_PLACES=171, PETRI_TRANSITIONS=280} [2021-03-25 22:21:09,841 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2021-03-25 22:21:09,841 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:09,841 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 280 transitions, 5880 flow [2021-03-25 22:21:09,841 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 280 transitions, 5880 flow [2021-03-25 22:21:09,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 171 places, 280 transitions, 5880 flow [2021-03-25 22:21:09,897 INFO L129 PetriNetUnfolder]: 200/657 cut-off events. [2021-03-25 22:21:09,897 INFO L130 PetriNetUnfolder]: For 8599/8701 co-relation queries the response was YES. [2021-03-25 22:21:09,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4436 conditions, 657 events. 200/657 cut-off events. For 8599/8701 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5228 event pairs, 0 based on Foata normal form. 16/566 useless extension candidates. Maximal degree in co-relation 4371. Up to 259 conditions per place. [2021-03-25 22:21:09,904 INFO L142 LiptonReduction]: Number of co-enabled transitions 1422 [2021-03-25 22:21:10,006 INFO L154 LiptonReduction]: Checked pairs total: 484 [2021-03-25 22:21:10,007 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 22:21:10,007 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 166 [2021-03-25 22:21:10,007 INFO L480 AbstractCegarLoop]: Abstraction has has 170 places, 279 transitions, 5878 flow [2021-03-25 22:21:10,008 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 22:21:10,008 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:10,008 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:10,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 22:21:10,008 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:10,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:10,008 INFO L82 PathProgramCache]: Analyzing trace with hash 739174175, now seen corresponding path program 1 times [2021-03-25 22:21:10,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:10,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315221776] [2021-03-25 22:21:10,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:10,023 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:10,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:10,028 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 22:21:10,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:10,034 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:10,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:10,041 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:10,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:10,048 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 22:21:10,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315221776] [2021-03-25 22:21:10,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:21:10,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:21:10,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957987214] [2021-03-25 22:21:10,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 22:21:10,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:10,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 22:21:10,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 22:21:10,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 252 [2021-03-25 22:21:10,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 279 transitions, 5878 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 22:21:10,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:10,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 252 [2021-03-25 22:21:10,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:10,518 INFO L129 PetriNetUnfolder]: 212/655 cut-off events. [2021-03-25 22:21:10,518 INFO L130 PetriNetUnfolder]: For 10057/10119 co-relation queries the response was YES. [2021-03-25 22:21:10,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5015 conditions, 655 events. 212/655 cut-off events. For 10057/10119 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4926 event pairs, 0 based on Foata normal form. 29/571 useless extension candidates. Maximal degree in co-relation 4948. Up to 298 conditions per place. [2021-03-25 22:21:10,525 INFO L132 encePairwiseOnDemand]: 172/252 looper letters, 165 selfloop transitions, 133 changer transitions 0/308 dead transitions. [2021-03-25 22:21:10,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 308 transitions, 6998 flow [2021-03-25 22:21:10,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:21:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:21:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 866 transitions. [2021-03-25 22:21:10,526 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3818342151675485 [2021-03-25 22:21:10,526 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 866 transitions. [2021-03-25 22:21:10,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 866 transitions. [2021-03-25 22:21:10,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:10,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 866 transitions. [2021-03-25 22:21:10,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.22222222222223) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:10,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:10,529 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:10,529 INFO L185 Difference]: Start difference. First operand has 170 places, 279 transitions, 5878 flow. Second operand 9 states and 866 transitions. [2021-03-25 22:21:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 308 transitions, 6998 flow [2021-03-25 22:21:10,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 308 transitions, 6895 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-25 22:21:10,594 INFO L241 Difference]: Finished difference. Result has 178 places, 301 transitions, 6655 flow [2021-03-25 22:21:10,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=5784, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6655, PETRI_PLACES=178, PETRI_TRANSITIONS=301} [2021-03-25 22:21:10,594 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2021-03-25 22:21:10,594 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:10,594 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 301 transitions, 6655 flow [2021-03-25 22:21:10,595 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 301 transitions, 6655 flow [2021-03-25 22:21:10,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 178 places, 301 transitions, 6655 flow [2021-03-25 22:21:10,661 INFO L129 PetriNetUnfolder]: 212/655 cut-off events. [2021-03-25 22:21:10,661 INFO L130 PetriNetUnfolder]: For 10431/10567 co-relation queries the response was YES. [2021-03-25 22:21:10,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4870 conditions, 655 events. 212/655 cut-off events. For 10431/10567 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5015 event pairs, 0 based on Foata normal form. 27/567 useless extension candidates. Maximal degree in co-relation 4802. Up to 283 conditions per place. [2021-03-25 22:21:10,668 INFO L142 LiptonReduction]: Number of co-enabled transitions 1264 [2021-03-25 22:21:10,751 INFO L154 LiptonReduction]: Checked pairs total: 392 [2021-03-25 22:21:10,751 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:21:10,751 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 157 [2021-03-25 22:21:10,752 INFO L480 AbstractCegarLoop]: Abstraction has has 178 places, 301 transitions, 6655 flow [2021-03-25 22:21:10,752 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 22:21:10,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:10,753 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:10,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 22:21:10,753 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:10,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:10,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1060362918, now seen corresponding path program 1 times [2021-03-25 22:21:10,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:10,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551131114] [2021-03-25 22:21:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:10,769 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:10,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:10,774 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:10,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:10,782 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 22:21:10,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:10,789 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:10,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:10,797 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:10,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:10,804 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 22:21:10,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551131114] [2021-03-25 22:21:10,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:21:10,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:21:10,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922028036] [2021-03-25 22:21:10,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:21:10,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:21:10,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-25 22:21:10,806 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 254 [2021-03-25 22:21:10,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 301 transitions, 6655 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:10,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:10,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 254 [2021-03-25 22:21:10,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:11,302 INFO L129 PetriNetUnfolder]: 215/667 cut-off events. [2021-03-25 22:21:11,303 INFO L130 PetriNetUnfolder]: For 11307/11376 co-relation queries the response was YES. [2021-03-25 22:21:11,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5342 conditions, 667 events. 215/667 cut-off events. For 11307/11376 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5022 event pairs, 0 based on Foata normal form. 28/579 useless extension candidates. Maximal degree in co-relation 5272. Up to 289 conditions per place. [2021-03-25 22:21:11,310 INFO L132 encePairwiseOnDemand]: 165/254 looper letters, 148 selfloop transitions, 155 changer transitions 2/315 dead transitions. [2021-03-25 22:21:11,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 315 transitions, 7486 flow [2021-03-25 22:21:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 22:21:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 22:21:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1025 transitions. [2021-03-25 22:21:11,311 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.366857551896922 [2021-03-25 22:21:11,311 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1025 transitions. [2021-03-25 22:21:11,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1025 transitions. [2021-03-25 22:21:11,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:11,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1025 transitions. [2021-03-25 22:21:11,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.18181818181819) internal successors, (1025), 11 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 22:21:11,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:11,314 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:11,314 INFO L185 Difference]: Start difference. First operand has 178 places, 301 transitions, 6655 flow. Second operand 11 states and 1025 transitions. [2021-03-25 22:21:11,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 315 transitions, 7486 flow [2021-03-25 22:21:11,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 315 transitions, 7384 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-03-25 22:21:11,370 INFO L241 Difference]: Finished difference. Result has 187 places, 307 transitions, 7140 flow [2021-03-25 22:21:11,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=6553, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7140, PETRI_PLACES=187, PETRI_TRANSITIONS=307} [2021-03-25 22:21:11,370 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2021-03-25 22:21:11,370 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:11,371 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 307 transitions, 7140 flow [2021-03-25 22:21:11,371 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 307 transitions, 7140 flow [2021-03-25 22:21:11,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 187 places, 307 transitions, 7140 flow [2021-03-25 22:21:11,440 INFO L129 PetriNetUnfolder]: 214/661 cut-off events. [2021-03-25 22:21:11,440 INFO L130 PetriNetUnfolder]: For 11577/11734 co-relation queries the response was YES. [2021-03-25 22:21:11,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 661 events. 214/661 cut-off events. For 11577/11734 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5075 event pairs, 0 based on Foata normal form. 16/562 useless extension candidates. Maximal degree in co-relation 5134. Up to 286 conditions per place. [2021-03-25 22:21:11,450 INFO L142 LiptonReduction]: Number of co-enabled transitions 1278 [2021-03-25 22:21:11,537 INFO L154 LiptonReduction]: Checked pairs total: 394 [2021-03-25 22:21:11,538 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:21:11,538 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 168 [2021-03-25 22:21:11,539 INFO L480 AbstractCegarLoop]: Abstraction has has 187 places, 307 transitions, 7140 flow [2021-03-25 22:21:11,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:11,539 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:11,539 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:11,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 22:21:11,539 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:11,540 INFO L82 PathProgramCache]: Analyzing trace with hash 528530450, now seen corresponding path program 1 times [2021-03-25 22:21:11,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:11,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52506626] [2021-03-25 22:21:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:11,553 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:11,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:11,558 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-25 22:21:11,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:11,565 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:11,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:11,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:11,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:11,580 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:11,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:11,588 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 22:21:11,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52506626] [2021-03-25 22:21:11,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:21:11,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:21:11,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305835924] [2021-03-25 22:21:11,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:21:11,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:11,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:21:11,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-25 22:21:11,590 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 256 [2021-03-25 22:21:11,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 307 transitions, 7140 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:11,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:11,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 256 [2021-03-25 22:21:11,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:11,988 INFO L129 PetriNetUnfolder]: 222/688 cut-off events. [2021-03-25 22:21:11,988 INFO L130 PetriNetUnfolder]: For 12224/12306 co-relation queries the response was YES. [2021-03-25 22:21:11,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 688 events. 222/688 cut-off events. For 12224/12306 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5258 event pairs, 0 based on Foata normal form. 29/599 useless extension candidates. Maximal degree in co-relation 5738. Up to 364 conditions per place. [2021-03-25 22:21:11,995 INFO L132 encePairwiseOnDemand]: 216/256 looper letters, 264 selfloop transitions, 55 changer transitions 1/330 dead transitions. [2021-03-25 22:21:11,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 330 transitions, 8249 flow [2021-03-25 22:21:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:21:11,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:21:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 691 transitions. [2021-03-25 22:21:11,997 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38560267857142855 [2021-03-25 22:21:11,997 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 691 transitions. [2021-03-25 22:21:11,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 691 transitions. [2021-03-25 22:21:11,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:11,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 691 transitions. [2021-03-25 22:21:11,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:11,999 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 22:21:11,999 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 22:21:11,999 INFO L185 Difference]: Start difference. First operand has 187 places, 307 transitions, 7140 flow. Second operand 7 states and 691 transitions. [2021-03-25 22:21:11,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 330 transitions, 8249 flow [2021-03-25 22:21:12,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 330 transitions, 8075 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-25 22:21:12,087 INFO L241 Difference]: Finished difference. Result has 188 places, 317 transitions, 7398 flow [2021-03-25 22:21:12,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=6968, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7398, PETRI_PLACES=188, PETRI_TRANSITIONS=317} [2021-03-25 22:21:12,087 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2021-03-25 22:21:12,087 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:12,088 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 317 transitions, 7398 flow [2021-03-25 22:21:12,088 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 317 transitions, 7398 flow [2021-03-25 22:21:12,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 317 transitions, 7398 flow [2021-03-25 22:21:12,174 INFO L129 PetriNetUnfolder]: 220/684 cut-off events. [2021-03-25 22:21:12,174 INFO L130 PetriNetUnfolder]: For 12576/12823 co-relation queries the response was YES. [2021-03-25 22:21:12,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 684 events. 220/684 cut-off events. For 12576/12823 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5300 event pairs, 0 based on Foata normal form. 46/612 useless extension candidates. Maximal degree in co-relation 5266. Up to 297 conditions per place. [2021-03-25 22:21:12,187 INFO L142 LiptonReduction]: Number of co-enabled transitions 1308 [2021-03-25 22:21:12,252 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-25 22:21:12,252 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:21:12,252 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 165 [2021-03-25 22:21:12,253 INFO L480 AbstractCegarLoop]: Abstraction has has 188 places, 316 transitions, 7384 flow [2021-03-25 22:21:12,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:12,253 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:12,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:12,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 22:21:12,254 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:12,254 INFO L82 PathProgramCache]: Analyzing trace with hash 745684950, now seen corresponding path program 1 times [2021-03-25 22:21:12,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:12,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421347903] [2021-03-25 22:21:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:12,269 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:12,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:12,274 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:12,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:12,280 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 22:21:12,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:12,288 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:12,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:12,299 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:12,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:12,306 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 22:21:12,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421347903] [2021-03-25 22:21:12,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:21:12,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:21:12,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879590381] [2021-03-25 22:21:12,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:21:12,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:12,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:21:12,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-25 22:21:12,308 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 256 [2021-03-25 22:21:12,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 316 transitions, 7384 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:12,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:12,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 256 [2021-03-25 22:21:12,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:12,922 INFO L129 PetriNetUnfolder]: 245/774 cut-off events. [2021-03-25 22:21:12,922 INFO L130 PetriNetUnfolder]: For 17915/18002 co-relation queries the response was YES. [2021-03-25 22:21:12,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6488 conditions, 774 events. 245/774 cut-off events. For 17915/18002 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6174 event pairs, 0 based on Foata normal form. 38/675 useless extension candidates. Maximal degree in co-relation 6412. Up to 346 conditions per place. [2021-03-25 22:21:12,931 INFO L132 encePairwiseOnDemand]: 145/256 looper letters, 82 selfloop transitions, 261 changer transitions 2/355 dead transitions. [2021-03-25 22:21:12,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 355 transitions, 9093 flow [2021-03-25 22:21:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 22:21:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 22:21:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1058 transitions. [2021-03-25 22:21:12,932 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3757102272727273 [2021-03-25 22:21:12,932 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1058 transitions. [2021-03-25 22:21:12,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1058 transitions. [2021-03-25 22:21:12,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:12,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1058 transitions. [2021-03-25 22:21:12,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 96.18181818181819) internal successors, (1058), 11 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:12,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 256.0) internal successors, (3072), 12 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:12,936 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 256.0) internal successors, (3072), 12 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:12,936 INFO L185 Difference]: Start difference. First operand has 188 places, 316 transitions, 7384 flow. Second operand 11 states and 1058 transitions. [2021-03-25 22:21:12,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 355 transitions, 9093 flow [2021-03-25 22:21:13,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 355 transitions, 9024 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-25 22:21:13,013 INFO L241 Difference]: Finished difference. Result has 196 places, 348 transitions, 9002 flow [2021-03-25 22:21:13,014 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=7319, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9002, PETRI_PLACES=196, PETRI_TRANSITIONS=348} [2021-03-25 22:21:13,014 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2021-03-25 22:21:13,014 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:13,014 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 348 transitions, 9002 flow [2021-03-25 22:21:13,014 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 348 transitions, 9002 flow [2021-03-25 22:21:13,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 348 transitions, 9002 flow [2021-03-25 22:21:13,087 INFO L129 PetriNetUnfolder]: 243/774 cut-off events. [2021-03-25 22:21:13,088 INFO L130 PetriNetUnfolder]: For 17200/17505 co-relation queries the response was YES. [2021-03-25 22:21:13,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6536 conditions, 774 events. 243/774 cut-off events. For 17200/17505 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6263 event pairs, 0 based on Foata normal form. 57/696 useless extension candidates. Maximal degree in co-relation 6460. Up to 344 conditions per place. [2021-03-25 22:21:13,096 INFO L142 LiptonReduction]: Number of co-enabled transitions 1430 [2021-03-25 22:21:13,342 INFO L154 LiptonReduction]: Checked pairs total: 2025 [2021-03-25 22:21:13,342 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 22:21:13,342 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 328 [2021-03-25 22:21:13,344 INFO L480 AbstractCegarLoop]: Abstraction has has 196 places, 348 transitions, 9002 flow [2021-03-25 22:21:13,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:13,344 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:13,344 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:13,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 22:21:13,344 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:13,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1181070255, now seen corresponding path program 1 times [2021-03-25 22:21:13,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:13,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624123312] [2021-03-25 22:21:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:13,359 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:13,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,364 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:13,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:13,370 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:13,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:13,377 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:13,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,384 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:13,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,391 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 22:21:13,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624123312] [2021-03-25 22:21:13,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517351871] [2021-03-25 22:21:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:21:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:13,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:13,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:13,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:13,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:13,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:13,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:13,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:13,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:13,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:13,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:13,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:13,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:13,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:13,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:13,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:13,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:13,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:13,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:13,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:21:13,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:13,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:13,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:21:13,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:13,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:13,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:13,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:13,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:13,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:13,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:21:13,548 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-03-25 22:21:13,549 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:13,549 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:13,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:13,555 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 22:21:13,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:13,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:13,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069420954] [2021-03-25 22:21:13,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:13,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:13,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:13,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:13,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 265 [2021-03-25 22:21:13,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 348 transitions, 9002 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 22:21:13,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:13,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 265 [2021-03-25 22:21:13,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:14,504 INFO L129 PetriNetUnfolder]: 251/796 cut-off events. [2021-03-25 22:21:14,504 INFO L130 PetriNetUnfolder]: For 18078/18182 co-relation queries the response was YES. [2021-03-25 22:21:14,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7200 conditions, 796 events. 251/796 cut-off events. For 18078/18182 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6377 event pairs, 0 based on Foata normal form. 44/700 useless extension candidates. Maximal degree in co-relation 7122. Up to 356 conditions per place. [2021-03-25 22:21:14,511 INFO L132 encePairwiseOnDemand]: 139/265 looper letters, 87 selfloop transitions, 269 changer transitions 0/366 dead transitions. [2021-03-25 22:21:14,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 366 transitions, 10202 flow [2021-03-25 22:21:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-25 22:21:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-03-25 22:21:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1747 transitions. [2021-03-25 22:21:14,514 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.329622641509434 [2021-03-25 22:21:14,514 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1747 transitions. [2021-03-25 22:21:14,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1747 transitions. [2021-03-25 22:21:14,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:14,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1747 transitions. [2021-03-25 22:21:14,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 87.35) internal successors, (1747), 20 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:14,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 265.0) internal successors, (5565), 21 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:14,521 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 265.0) internal successors, (5565), 21 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:14,521 INFO L185 Difference]: Start difference. First operand has 196 places, 348 transitions, 9002 flow. Second operand 20 states and 1747 transitions. [2021-03-25 22:21:14,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 366 transitions, 10202 flow [2021-03-25 22:21:14,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 366 transitions, 9902 flow, removed 72 selfloop flow, removed 6 redundant places. [2021-03-25 22:21:14,641 INFO L241 Difference]: Finished difference. Result has 212 places, 362 transitions, 9919 flow [2021-03-25 22:21:14,641 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=8736, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9919, PETRI_PLACES=212, PETRI_TRANSITIONS=362} [2021-03-25 22:21:14,642 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2021-03-25 22:21:14,642 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:14,642 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 362 transitions, 9919 flow [2021-03-25 22:21:14,642 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 362 transitions, 9919 flow [2021-03-25 22:21:14,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 212 places, 362 transitions, 9919 flow [2021-03-25 22:21:14,728 INFO L129 PetriNetUnfolder]: 250/792 cut-off events. [2021-03-25 22:21:14,728 INFO L130 PetriNetUnfolder]: For 18627/18869 co-relation queries the response was YES. [2021-03-25 22:21:14,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7048 conditions, 792 events. 250/792 cut-off events. For 18627/18869 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6429 event pairs, 0 based on Foata normal form. 38/689 useless extension candidates. Maximal degree in co-relation 6968. Up to 356 conditions per place. [2021-03-25 22:21:14,738 INFO L142 LiptonReduction]: Number of co-enabled transitions 1478 [2021-03-25 22:21:14,872 INFO L154 LiptonReduction]: Checked pairs total: 239 [2021-03-25 22:21:14,872 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:21:14,872 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 230 [2021-03-25 22:21:14,875 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 361 transitions, 9898 flow [2021-03-25 22:21:14,875 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 22:21:14,875 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:14,875 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:15,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-03-25 22:21:15,092 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:15,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2094047385, now seen corresponding path program 1 times [2021-03-25 22:21:15,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:15,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789795064] [2021-03-25 22:21:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:15,118 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:15,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,123 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:15,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:15,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:15,145 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:15,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,153 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 22:21:15,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789795064] [2021-03-25 22:21:15,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036848203] [2021-03-25 22:21:15,154 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 22:21:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:15,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:15,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:15,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:15,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:15,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:15,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:15,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:15,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:15,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:15,241 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 22:21:15,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:15,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:15,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:15,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:15,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:15,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:15,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:15,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:15,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:15,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:15,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:15,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:15,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,274 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 22:21:15,275 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 22:21:15,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:15,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:15,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:15,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:15,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:15,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 22:21:15,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:15,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:15,296 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:15,296 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:15,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:15,303 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 22:21:15,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:15,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:15,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354741105] [2021-03-25 22:21:15,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:15,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:15,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:15,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:15,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 266 [2021-03-25 22:21:15,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 361 transitions, 9898 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 22:21:15,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:15,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 266 [2021-03-25 22:21:15,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:15,976 INFO L129 PetriNetUnfolder]: 254/810 cut-off events. [2021-03-25 22:21:15,976 INFO L130 PetriNetUnfolder]: For 18505/18601 co-relation queries the response was YES. [2021-03-25 22:21:15,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7649 conditions, 810 events. 254/810 cut-off events. For 18505/18601 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6543 event pairs, 0 based on Foata normal form. 31/700 useless extension candidates. Maximal degree in co-relation 7567. Up to 365 conditions per place. [2021-03-25 22:21:15,983 INFO L132 encePairwiseOnDemand]: 182/266 looper letters, 233 selfloop transitions, 141 changer transitions 0/384 dead transitions. [2021-03-25 22:21:15,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 384 transitions, 11122 flow [2021-03-25 22:21:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 22:21:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 22:21:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1329 transitions. [2021-03-25 22:21:15,985 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3330827067669173 [2021-03-25 22:21:15,985 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1329 transitions. [2021-03-25 22:21:15,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1329 transitions. [2021-03-25 22:21:15,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:15,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1329 transitions. [2021-03-25 22:21:15,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.6) internal successors, (1329), 15 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:15,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:15,990 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:15,990 INFO L185 Difference]: Start difference. First operand has 212 places, 361 transitions, 9898 flow. Second operand 15 states and 1329 transitions. [2021-03-25 22:21:15,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 384 transitions, 11122 flow [2021-03-25 22:21:16,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 384 transitions, 10753 flow, removed 112 selfloop flow, removed 14 redundant places. [2021-03-25 22:21:16,085 INFO L241 Difference]: Finished difference. Result has 214 places, 368 transitions, 10133 flow [2021-03-25 22:21:16,085 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=9552, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10133, PETRI_PLACES=214, PETRI_TRANSITIONS=368} [2021-03-25 22:21:16,085 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2021-03-25 22:21:16,085 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:16,085 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 368 transitions, 10133 flow [2021-03-25 22:21:16,085 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 368 transitions, 10133 flow [2021-03-25 22:21:16,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 214 places, 368 transitions, 10133 flow [2021-03-25 22:21:16,171 INFO L129 PetriNetUnfolder]: 254/810 cut-off events. [2021-03-25 22:21:16,172 INFO L130 PetriNetUnfolder]: For 17729/18036 co-relation queries the response was YES. [2021-03-25 22:21:16,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7165 conditions, 810 events. 254/810 cut-off events. For 17729/18036 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6648 event pairs, 0 based on Foata normal form. 55/723 useless extension candidates. Maximal degree in co-relation 7085. Up to 358 conditions per place. [2021-03-25 22:21:16,182 INFO L142 LiptonReduction]: Number of co-enabled transitions 1496 [2021-03-25 22:21:16,309 INFO L154 LiptonReduction]: Checked pairs total: 472 [2021-03-25 22:21:16,309 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:21:16,309 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 224 [2021-03-25 22:21:16,311 INFO L480 AbstractCegarLoop]: Abstraction has has 214 places, 368 transitions, 10133 flow [2021-03-25 22:21:16,311 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 22:21:16,311 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:16,311 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:16,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-25 22:21:16,514 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash 954144961, now seen corresponding path program 1 times [2021-03-25 22:21:16,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:16,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809838172] [2021-03-25 22:21:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:16,530 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:16,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,534 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:16,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:16,540 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 22:21:16,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:16,547 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:16,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,554 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:16,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,561 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 22:21:16,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809838172] [2021-03-25 22:21:16,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393341543] [2021-03-25 22:21:16,562 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 22:21:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:16,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:16,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:16,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:16,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:16,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:16,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:16,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:16,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:16,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:16,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:16,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:16,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:16,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:16,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,667 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 22:21:16,669 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 22:21:16,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:16,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:16,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:21:16,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:16,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:21:16,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:16,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:16,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:16,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 22:21:16,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:16,708 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-25 22:21:16,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,711 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-25 22:21:16,713 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,716 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.4 percent of original size 58 [2021-03-25 22:21:16,717 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.4 percent of original size 58 [2021-03-25 22:21:16,718 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-25 22:21:16,718 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:16,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:16,719 INFO L142 QuantifierPusher]: treesize reduction -4, result has 105.9 percent of original size [2021-03-25 22:21:16,766 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:16,784 INFO L147 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size 2624 [2021-03-25 22:21:16,792 INFO L147 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size 2624 [2021-03-25 22:21:16,800 INFO L142 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size [2021-03-25 22:21:16,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2624 [2021-03-25 22:21:16,847 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 22:21:16,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:16,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:16,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187788191] [2021-03-25 22:21:16,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:16,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:16,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:16,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:16,849 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 268 [2021-03-25 22:21:16,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 368 transitions, 10133 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 22:21:16,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:16,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 268 [2021-03-25 22:21:16,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:17,781 INFO L129 PetriNetUnfolder]: 277/887 cut-off events. [2021-03-25 22:21:17,781 INFO L130 PetriNetUnfolder]: For 22039/22145 co-relation queries the response was YES. [2021-03-25 22:21:17,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8316 conditions, 887 events. 277/887 cut-off events. For 22039/22145 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7332 event pairs, 0 based on Foata normal form. 33/763 useless extension candidates. Maximal degree in co-relation 8234. Up to 399 conditions per place. [2021-03-25 22:21:17,792 INFO L132 encePairwiseOnDemand]: 131/268 looper letters, 80 selfloop transitions, 318 changer transitions 0/408 dead transitions. [2021-03-25 22:21:17,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 408 transitions, 11968 flow [2021-03-25 22:21:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-25 22:21:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-03-25 22:21:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1912 transitions. [2021-03-25 22:21:17,798 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3242876526458616 [2021-03-25 22:21:17,798 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1912 transitions. [2021-03-25 22:21:17,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1912 transitions. [2021-03-25 22:21:17,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:17,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1912 transitions. [2021-03-25 22:21:17,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 86.9090909090909) internal successors, (1912), 22 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:17,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 268.0) internal successors, (6164), 23 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:17,804 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 268.0) internal successors, (6164), 23 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:17,805 INFO L185 Difference]: Start difference. First operand has 214 places, 368 transitions, 10133 flow. Second operand 22 states and 1912 transitions. [2021-03-25 22:21:17,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 408 transitions, 11968 flow [2021-03-25 22:21:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 408 transitions, 11744 flow, removed 5 selfloop flow, removed 12 redundant places. [2021-03-25 22:21:17,954 INFO L241 Difference]: Finished difference. Result has 227 places, 404 transitions, 11872 flow [2021-03-25 22:21:17,954 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=9916, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11872, PETRI_PLACES=227, PETRI_TRANSITIONS=404} [2021-03-25 22:21:17,955 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2021-03-25 22:21:17,955 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:17,955 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 404 transitions, 11872 flow [2021-03-25 22:21:17,955 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 404 transitions, 11872 flow [2021-03-25 22:21:17,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 227 places, 404 transitions, 11872 flow [2021-03-25 22:21:18,058 INFO L129 PetriNetUnfolder]: 278/881 cut-off events. [2021-03-25 22:21:18,058 INFO L130 PetriNetUnfolder]: For 23165/23528 co-relation queries the response was YES. [2021-03-25 22:21:18,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8303 conditions, 881 events. 278/881 cut-off events. For 23165/23528 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7299 event pairs, 0 based on Foata normal form. 65/790 useless extension candidates. Maximal degree in co-relation 8220. Up to 399 conditions per place. [2021-03-25 22:21:18,069 INFO L142 LiptonReduction]: Number of co-enabled transitions 1624 [2021-03-25 22:21:18,357 INFO L154 LiptonReduction]: Checked pairs total: 1830 [2021-03-25 22:21:18,357 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 22:21:18,357 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 402 [2021-03-25 22:21:18,359 INFO L480 AbstractCegarLoop]: Abstraction has has 227 places, 403 transitions, 11857 flow [2021-03-25 22:21:18,359 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 22:21:18,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:18,359 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:18,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:21:18,565 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:18,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1488323715, now seen corresponding path program 1 times [2021-03-25 22:21:18,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:18,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604154475] [2021-03-25 22:21:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:18,580 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:18,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,585 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 22:21:18,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,591 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 22:21:18,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,598 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 22:21:18,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:18,606 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:18,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,615 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:18,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,623 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 22:21:18,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604154475] [2021-03-25 22:21:18,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785072116] [2021-03-25 22:21:18,623 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 22:21:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:18,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 22:21:18,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:18,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:18,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:18,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:18,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:18,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:18,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:18,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:18,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:18,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:18,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:18,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:18,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,740 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 22:21:18,740 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 22:21:18,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:18,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:21:18,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:18,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:21:18,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:18,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:18,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:18,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:18,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 22:21:18,772 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-25 22:21:18,772 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 22:21:18,773 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:18,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:21:18,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:18,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:21:18,782 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 22:21:18,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:18,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-25 22:21:18,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283982401] [2021-03-25 22:21:18,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 22:21:18,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:18,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 22:21:18,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-03-25 22:21:18,784 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 276 [2021-03-25 22:21:18,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 403 transitions, 11857 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 22:21:18,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:18,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 276 [2021-03-25 22:21:18,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:19,761 INFO L129 PetriNetUnfolder]: 326/1061 cut-off events. [2021-03-25 22:21:19,762 INFO L130 PetriNetUnfolder]: For 33311/33423 co-relation queries the response was YES. [2021-03-25 22:21:19,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10423 conditions, 1061 events. 326/1061 cut-off events. For 33311/33423 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8929 event pairs, 0 based on Foata normal form. 63/929 useless extension candidates. Maximal degree in co-relation 10338. Up to 486 conditions per place. [2021-03-25 22:21:19,775 INFO L132 encePairwiseOnDemand]: 163/276 looper letters, 204 selfloop transitions, 258 changer transitions 2/474 dead transitions. [2021-03-25 22:21:19,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 474 transitions, 14969 flow [2021-03-25 22:21:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-25 22:21:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-25 22:21:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1712 transitions. [2021-03-25 22:21:19,777 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.32646834477498093 [2021-03-25 22:21:19,778 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1712 transitions. [2021-03-25 22:21:19,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1712 transitions. [2021-03-25 22:21:19,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:19,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1712 transitions. [2021-03-25 22:21:19,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 90.10526315789474) internal successors, (1712), 19 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:19,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 276.0) internal successors, (5520), 20 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:19,783 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 276.0) internal successors, (5520), 20 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:19,783 INFO L185 Difference]: Start difference. First operand has 227 places, 403 transitions, 11857 flow. Second operand 19 states and 1712 transitions. [2021-03-25 22:21:19,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 474 transitions, 14969 flow [2021-03-25 22:21:19,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 474 transitions, 14524 flow, removed 169 selfloop flow, removed 12 redundant places. [2021-03-25 22:21:19,962 INFO L241 Difference]: Finished difference. Result has 238 places, 467 transitions, 14271 flow [2021-03-25 22:21:19,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=11418, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14271, PETRI_PLACES=238, PETRI_TRANSITIONS=467} [2021-03-25 22:21:19,962 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2021-03-25 22:21:19,962 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:19,963 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 467 transitions, 14271 flow [2021-03-25 22:21:19,963 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 467 transitions, 14271 flow [2021-03-25 22:21:19,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 238 places, 467 transitions, 14271 flow [2021-03-25 22:21:20,082 INFO L129 PetriNetUnfolder]: 326/1051 cut-off events. [2021-03-25 22:21:20,082 INFO L130 PetriNetUnfolder]: For 30248/30621 co-relation queries the response was YES. [2021-03-25 22:21:20,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10141 conditions, 1051 events. 326/1051 cut-off events. For 30248/30621 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8792 event pairs, 0 based on Foata normal form. 77/936 useless extension candidates. Maximal degree in co-relation 10055. Up to 432 conditions per place. [2021-03-25 22:21:20,096 INFO L142 LiptonReduction]: Number of co-enabled transitions 1862 [2021-03-25 22:21:20,641 INFO L154 LiptonReduction]: Checked pairs total: 5176 [2021-03-25 22:21:20,641 INFO L156 LiptonReduction]: Total number of compositions: 19 [2021-03-25 22:21:20,642 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 680 [2021-03-25 22:21:20,643 INFO L480 AbstractCegarLoop]: Abstraction has has 238 places, 467 transitions, 14273 flow [2021-03-25 22:21:20,643 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 22:21:20,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:20,643 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:20,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:21:20,844 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1011838802, now seen corresponding path program 1 times [2021-03-25 22:21:20,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:20,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995083171] [2021-03-25 22:21:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:20,862 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:20,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,866 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 22:21:20,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:20,872 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-03-25 22:21:20,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:20,880 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-25 22:21:20,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:20,888 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:20,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,895 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 22:21:20,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995083171] [2021-03-25 22:21:20,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183320659] [2021-03-25 22:21:20,895 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 22:21:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:20,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:20,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:20,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:20,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:20,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:20,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:20,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:20,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:20,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:20,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:20,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:20,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:21,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:21,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:21,001 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 22:21:21,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:21,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:21,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:21,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:21,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:21,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:21,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:21,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:21,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:21,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:21,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:21,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:21,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:21,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:21,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:21,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:21,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:21,035 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:21,035 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:21,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:21,041 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 22:21:21,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:21,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:21,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655788503] [2021-03-25 22:21:21,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:21,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:21,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:21,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:21,043 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 295 [2021-03-25 22:21:21,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 467 transitions, 14273 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 22:21:21,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:21,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 295 [2021-03-25 22:21:21,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:21,791 INFO L129 PetriNetUnfolder]: 327/1060 cut-off events. [2021-03-25 22:21:21,791 INFO L130 PetriNetUnfolder]: For 30730/30912 co-relation queries the response was YES. [2021-03-25 22:21:21,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10852 conditions, 1060 events. 327/1060 cut-off events. For 30730/30912 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8951 event pairs, 0 based on Foata normal form. 42/908 useless extension candidates. Maximal degree in co-relation 10764. Up to 567 conditions per place. [2021-03-25 22:21:21,802 INFO L132 encePairwiseOnDemand]: 259/295 looper letters, 407 selfloop transitions, 62 changer transitions 0/479 dead transitions. [2021-03-25 22:21:21,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 479 transitions, 15448 flow [2021-03-25 22:21:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:21:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:21:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 796 transitions. [2021-03-25 22:21:21,810 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33728813559322035 [2021-03-25 22:21:21,810 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 796 transitions. [2021-03-25 22:21:21,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 796 transitions. [2021-03-25 22:21:21,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:21,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 796 transitions. [2021-03-25 22:21:21,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:21,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 295.0) internal successors, (2655), 9 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:21,813 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 295.0) internal successors, (2655), 9 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:21,813 INFO L185 Difference]: Start difference. First operand has 238 places, 467 transitions, 14273 flow. Second operand 8 states and 796 transitions. [2021-03-25 22:21:21,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 479 transitions, 15448 flow [2021-03-25 22:21:21,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 479 transitions, 15058 flow, removed 94 selfloop flow, removed 12 redundant places. [2021-03-25 22:21:21,968 INFO L241 Difference]: Finished difference. Result has 235 places, 469 transitions, 14136 flow [2021-03-25 22:21:21,968 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=13887, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14136, PETRI_PLACES=235, PETRI_TRANSITIONS=469} [2021-03-25 22:21:21,968 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2021-03-25 22:21:21,968 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:21,968 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 469 transitions, 14136 flow [2021-03-25 22:21:21,968 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 469 transitions, 14136 flow [2021-03-25 22:21:21,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 235 places, 469 transitions, 14136 flow [2021-03-25 22:21:22,086 INFO L129 PetriNetUnfolder]: 326/1059 cut-off events. [2021-03-25 22:21:22,086 INFO L130 PetriNetUnfolder]: For 29447/29664 co-relation queries the response was YES. [2021-03-25 22:21:22,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10101 conditions, 1059 events. 326/1059 cut-off events. For 29447/29664 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9178 event pairs, 0 based on Foata normal form. 68/933 useless extension candidates. Maximal degree in co-relation 10012. Up to 418 conditions per place. [2021-03-25 22:21:22,099 INFO L142 LiptonReduction]: Number of co-enabled transitions 1870 [2021-03-25 22:21:22,328 INFO L154 LiptonReduction]: Checked pairs total: 1227 [2021-03-25 22:21:22,328 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 22:21:22,328 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 360 [2021-03-25 22:21:22,329 INFO L480 AbstractCegarLoop]: Abstraction has has 235 places, 468 transitions, 14125 flow [2021-03-25 22:21:22,329 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 22:21:22,329 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:22,329 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:22,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-25 22:21:22,530 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash -565750615, now seen corresponding path program 1 times [2021-03-25 22:21:22,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:22,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335100468] [2021-03-25 22:21:22,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:22,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,556 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 22:21:22,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335100468] [2021-03-25 22:21:22,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516685995] [2021-03-25 22:21:22,556 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 22:21:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:22,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 22:21:22,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:22,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:22,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:22,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:22,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:22,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:22,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:22,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:22,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:22,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:22,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:22,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:22,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:21:22,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:21:22,661 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-25 22:21:22,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:22,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:21:22,670 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 22:21:22,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-25 22:21:22,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-03-25 22:21:22,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174905591] [2021-03-25 22:21:22,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:21:22,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:22,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:21:22,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-25 22:21:22,672 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 299 [2021-03-25 22:21:22,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 468 transitions, 14125 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 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 22:21:22,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:22,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 299 [2021-03-25 22:21:22,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:23,160 INFO L129 PetriNetUnfolder]: 325/1056 cut-off events. [2021-03-25 22:21:23,160 INFO L130 PetriNetUnfolder]: For 34047/34344 co-relation queries the response was YES. [2021-03-25 22:21:23,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10743 conditions, 1056 events. 325/1056 cut-off events. For 34047/34344 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8980 event pairs, 0 based on Foata normal form. 143/1008 useless extension candidates. Maximal degree in co-relation 10652. Up to 451 conditions per place. [2021-03-25 22:21:23,172 INFO L132 encePairwiseOnDemand]: 295/299 looper letters, 165 selfloop transitions, 3 changer transitions 0/473 dead transitions. [2021-03-25 22:21:23,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 473 transitions, 14529 flow [2021-03-25 22:21:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:21:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:21:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 787 transitions. [2021-03-25 22:21:23,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6580267558528428 [2021-03-25 22:21:23,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 787 transitions. [2021-03-25 22:21:23,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 787 transitions. [2021-03-25 22:21:23,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:23,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 787 transitions. [2021-03-25 22:21:23,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:23,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:23,175 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:23,175 INFO L185 Difference]: Start difference. First operand has 235 places, 468 transitions, 14125 flow. Second operand 4 states and 787 transitions. [2021-03-25 22:21:23,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 473 transitions, 14529 flow [2021-03-25 22:21:23,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 473 transitions, 14452 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-25 22:21:23,313 INFO L241 Difference]: Finished difference. Result has 234 places, 468 transitions, 14041 flow [2021-03-25 22:21:23,313 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=14028, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=14041, PETRI_PLACES=234, PETRI_TRANSITIONS=468} [2021-03-25 22:21:23,313 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2021-03-25 22:21:23,314 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:23,314 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 468 transitions, 14041 flow [2021-03-25 22:21:23,314 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 468 transitions, 14041 flow [2021-03-25 22:21:23,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 234 places, 468 transitions, 14041 flow [2021-03-25 22:21:23,438 INFO L129 PetriNetUnfolder]: 323/1052 cut-off events. [2021-03-25 22:21:23,438 INFO L130 PetriNetUnfolder]: For 29218/29431 co-relation queries the response was YES. [2021-03-25 22:21:23,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10384 conditions, 1052 events. 323/1052 cut-off events. For 29218/29431 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9124 event pairs, 0 based on Foata normal form. 64/1112 useless extension candidates. Maximal degree in co-relation 10295. Up to 418 conditions per place. [2021-03-25 22:21:23,452 INFO L142 LiptonReduction]: Number of co-enabled transitions 1852 [2021-03-25 22:21:23,631 INFO L154 LiptonReduction]: Checked pairs total: 342 [2021-03-25 22:21:23,631 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:21:23,632 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 318 [2021-03-25 22:21:23,633 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 468 transitions, 14042 flow [2021-03-25 22:21:23,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 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 22:21:23,633 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:23,633 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:23,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-03-25 22:21:23,834 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:23,834 INFO L82 PathProgramCache]: Analyzing trace with hash -220211029, now seen corresponding path program 1 times [2021-03-25 22:21:23,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:23,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592928973] [2021-03-25 22:21:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:23,850 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:23,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,855 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:23,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:23,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:23,876 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:23,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,883 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 22:21:23,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592928973] [2021-03-25 22:21:23,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015794204] [2021-03-25 22:21:23,884 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 22:21:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:23,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:23,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:23,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:23,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:23,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:23,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:23,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:23,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:23,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:23,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:23,987 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 22:21:23,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:23,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:23,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:24,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:24,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:24,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:24,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:24,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:24,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:24,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:24,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:24,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:24,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:24,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,017 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 22:21:24,018 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 22:21:24,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:24,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:24,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:24,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:24,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:24,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 22:21:24,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:24,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:24,037 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:24,037 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:24,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:24,043 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 22:21:24,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:24,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:24,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928248226] [2021-03-25 22:21:24,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:24,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:24,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:24,045 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 301 [2021-03-25 22:21:24,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 468 transitions, 14042 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 22:21:24,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:24,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 301 [2021-03-25 22:21:24,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:24,838 INFO L129 PetriNetUnfolder]: 327/1064 cut-off events. [2021-03-25 22:21:24,838 INFO L130 PetriNetUnfolder]: For 30170/30443 co-relation queries the response was YES. [2021-03-25 22:21:24,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11103 conditions, 1064 events. 327/1064 cut-off events. For 30170/30443 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8885 event pairs, 0 based on Foata normal form. 72/1132 useless extension candidates. Maximal degree in co-relation 11012. Up to 472 conditions per place. [2021-03-25 22:21:24,850 INFO L132 encePairwiseOnDemand]: 209/301 looper letters, 318 selfloop transitions, 167 changer transitions 0/496 dead transitions. [2021-03-25 22:21:24,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 496 transitions, 15591 flow [2021-03-25 22:21:24,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 22:21:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 22:21:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1364 transitions. [2021-03-25 22:21:24,853 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.30210409745293465 [2021-03-25 22:21:24,853 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1364 transitions. [2021-03-25 22:21:24,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1364 transitions. [2021-03-25 22:21:24,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:24,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1364 transitions. [2021-03-25 22:21:24,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 90.93333333333334) internal successors, (1364), 15 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:24,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 301.0) internal successors, (4816), 16 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:24,857 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 301.0) internal successors, (4816), 16 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:24,857 INFO L185 Difference]: Start difference. First operand has 234 places, 468 transitions, 14042 flow. Second operand 15 states and 1364 transitions. [2021-03-25 22:21:24,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 496 transitions, 15591 flow [2021-03-25 22:21:25,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 496 transitions, 15587 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 22:21:25,011 INFO L241 Difference]: Finished difference. Result has 249 places, 472 transitions, 14626 flow [2021-03-25 22:21:25,012 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=14038, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14626, PETRI_PLACES=249, PETRI_TRANSITIONS=472} [2021-03-25 22:21:25,012 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2021-03-25 22:21:25,012 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:25,012 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 472 transitions, 14626 flow [2021-03-25 22:21:25,012 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 472 transitions, 14626 flow [2021-03-25 22:21:25,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 472 transitions, 14626 flow [2021-03-25 22:21:25,141 INFO L129 PetriNetUnfolder]: 326/1062 cut-off events. [2021-03-25 22:21:25,141 INFO L130 PetriNetUnfolder]: For 30926/31252 co-relation queries the response was YES. [2021-03-25 22:21:25,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10751 conditions, 1062 events. 326/1062 cut-off events. For 30926/31252 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9220 event pairs, 0 based on Foata normal form. 70/1128 useless extension candidates. Maximal degree in co-relation 10659. Up to 424 conditions per place. [2021-03-25 22:21:25,157 INFO L142 LiptonReduction]: Number of co-enabled transitions 1866 [2021-03-25 22:21:25,215 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:21:25,215 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:21:25,215 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 203 [2021-03-25 22:21:25,216 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 472 transitions, 14626 flow [2021-03-25 22:21:25,216 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 22:21:25,217 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:25,217 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:25,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:21:25,418 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:25,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:25,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1452257535, now seen corresponding path program 1 times [2021-03-25 22:21:25,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:25,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511105705] [2021-03-25 22:21:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:25,432 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:25,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,437 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:25,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:25,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:25,458 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:25,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,465 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 22:21:25,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511105705] [2021-03-25 22:21:25,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854132669] [2021-03-25 22:21:25,466 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 22:21:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:25,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:25,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:25,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:25,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:25,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:25,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:25,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:25,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:25,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:25,569 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 22:21:25,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:25,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:25,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:25,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:25,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:25,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:25,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:25,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:25,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:25,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:25,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:25,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:25,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,597 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 22:21:25,598 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 22:21:25,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:25,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:25,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:25,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:25,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:25,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 22:21:25,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:25,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:25,617 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:25,617 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:25,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:25,623 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 22:21:25,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:25,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:25,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365151374] [2021-03-25 22:21:25,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:25,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:25,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:25,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:25,626 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 301 [2021-03-25 22:21:25,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 472 transitions, 14626 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 22:21:25,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:25,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 301 [2021-03-25 22:21:25,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:26,522 INFO L129 PetriNetUnfolder]: 332/1080 cut-off events. [2021-03-25 22:21:26,523 INFO L130 PetriNetUnfolder]: For 32018/32212 co-relation queries the response was YES. [2021-03-25 22:21:26,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11531 conditions, 1080 events. 332/1080 cut-off events. For 32018/32212 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9176 event pairs, 0 based on Foata normal form. 59/1135 useless extension candidates. Maximal degree in co-relation 11437. Up to 471 conditions per place. [2021-03-25 22:21:26,534 INFO L132 encePairwiseOnDemand]: 206/301 looper letters, 311 selfloop transitions, 179 changer transitions 0/501 dead transitions. [2021-03-25 22:21:26,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 501 transitions, 16219 flow [2021-03-25 22:21:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 22:21:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 22:21:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1368 transitions. [2021-03-25 22:21:26,536 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3029900332225914 [2021-03-25 22:21:26,536 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1368 transitions. [2021-03-25 22:21:26,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1368 transitions. [2021-03-25 22:21:26,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:26,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1368 transitions. [2021-03-25 22:21:26,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.2) internal successors, (1368), 15 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:26,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 301.0) internal successors, (4816), 16 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:26,540 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 301.0) internal successors, (4816), 16 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:26,540 INFO L185 Difference]: Start difference. First operand has 249 places, 472 transitions, 14626 flow. Second operand 15 states and 1368 transitions. [2021-03-25 22:21:26,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 501 transitions, 16219 flow [2021-03-25 22:21:26,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 501 transitions, 16030 flow, removed 8 selfloop flow, removed 9 redundant places. [2021-03-25 22:21:26,696 INFO L241 Difference]: Finished difference. Result has 256 places, 478 transitions, 15122 flow [2021-03-25 22:21:26,696 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=14437, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15122, PETRI_PLACES=256, PETRI_TRANSITIONS=478} [2021-03-25 22:21:26,696 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2021-03-25 22:21:26,696 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:26,697 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 478 transitions, 15122 flow [2021-03-25 22:21:26,697 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 478 transitions, 15122 flow [2021-03-25 22:21:26,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 256 places, 478 transitions, 15122 flow [2021-03-25 22:21:26,866 INFO L129 PetriNetUnfolder]: 331/1079 cut-off events. [2021-03-25 22:21:26,866 INFO L130 PetriNetUnfolder]: For 32789/33082 co-relation queries the response was YES. [2021-03-25 22:21:26,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11069 conditions, 1079 events. 331/1079 cut-off events. For 32789/33082 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9424 event pairs, 0 based on Foata normal form. 60/1135 useless extension candidates. Maximal degree in co-relation 10975. Up to 434 conditions per place. [2021-03-25 22:21:26,883 INFO L142 LiptonReduction]: Number of co-enabled transitions 1888 [2021-03-25 22:21:26,942 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:21:26,942 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:21:26,942 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 246 [2021-03-25 22:21:26,943 INFO L480 AbstractCegarLoop]: Abstraction has has 256 places, 478 transitions, 15122 flow [2021-03-25 22:21:26,944 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 22:21:26,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:26,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:27,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-03-25 22:21:27,144 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:27,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1473862799, now seen corresponding path program 1 times [2021-03-25 22:21:27,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:27,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635469998] [2021-03-25 22:21:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:27,158 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:27,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,164 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:27,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,169 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 22:21:27,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:27,176 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:27,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,184 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:27,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,190 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 22:21:27,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635469998] [2021-03-25 22:21:27,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441653322] [2021-03-25 22:21:27,191 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 22:21:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:27,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 22:21:27,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:27,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:27,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:27,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:27,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:27,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:27,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:27,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:27,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,296 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 22:21:27,297 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 22:21:27,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:27,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:21:27,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:27,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:21:27,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:27,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:27,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:27,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 22:21:27,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:27,335 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-25 22:21:27,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,337 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-25 22:21:27,338 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,340 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.4 percent of original size 58 [2021-03-25 22:21:27,341 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.4 percent of original size 58 [2021-03-25 22:21:27,341 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-25 22:21:27,342 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:27,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:27,343 INFO L142 QuantifierPusher]: treesize reduction -4, result has 105.9 percent of original size [2021-03-25 22:21:27,367 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:27,423 INFO L147 QuantifierPusher]: treesize reduction 205, result has 94.6 percent of original size 3595 [2021-03-25 22:21:27,429 INFO L147 QuantifierPusher]: treesize reduction 205, result has 94.6 percent of original size 3595 [2021-03-25 22:21:27,435 INFO L142 QuantifierPusher]: treesize reduction 205, result has 94.6 percent of original size [2021-03-25 22:21:27,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3595 [2021-03-25 22:21:27,531 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 22:21:27,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:27,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 22:21:27,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563868942] [2021-03-25 22:21:27,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:21:27,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:27,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:21:27,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:21:27,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 301 [2021-03-25 22:21:27,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 478 transitions, 15122 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 22:21:27,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:27,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 301 [2021-03-25 22:21:27,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:28,682 INFO L129 PetriNetUnfolder]: 354/1145 cut-off events. [2021-03-25 22:21:28,682 INFO L130 PetriNetUnfolder]: For 40479/40684 co-relation queries the response was YES. [2021-03-25 22:21:28,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12488 conditions, 1145 events. 354/1145 cut-off events. For 40479/40684 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9915 event pairs, 0 based on Foata normal form. 69/1210 useless extension candidates. Maximal degree in co-relation 12392. Up to 472 conditions per place. [2021-03-25 22:21:28,698 INFO L132 encePairwiseOnDemand]: 152/301 looper letters, 131 selfloop transitions, 367 changer transitions 0/509 dead transitions. [2021-03-25 22:21:28,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 509 transitions, 17119 flow [2021-03-25 22:21:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-25 22:21:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-03-25 22:21:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1945 transitions. [2021-03-25 22:21:28,701 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2937179099969798 [2021-03-25 22:21:28,701 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1945 transitions. [2021-03-25 22:21:28,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1945 transitions. [2021-03-25 22:21:28,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:28,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1945 transitions. [2021-03-25 22:21:28,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 88.4090909090909) internal successors, (1945), 22 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:28,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 301.0) internal successors, (6923), 23 states have internal predecessors, (6923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:28,707 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 301.0) internal successors, (6923), 23 states have internal predecessors, (6923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:28,708 INFO L185 Difference]: Start difference. First operand has 256 places, 478 transitions, 15122 flow. Second operand 22 states and 1945 transitions. [2021-03-25 22:21:28,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 509 transitions, 17119 flow [2021-03-25 22:21:28,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 509 transitions, 16905 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-03-25 22:21:28,950 INFO L241 Difference]: Finished difference. Result has 270 places, 503 transitions, 16872 flow [2021-03-25 22:21:28,951 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=14914, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16872, PETRI_PLACES=270, PETRI_TRANSITIONS=503} [2021-03-25 22:21:28,951 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2021-03-25 22:21:28,951 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:28,951 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 503 transitions, 16872 flow [2021-03-25 22:21:28,951 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 503 transitions, 16872 flow [2021-03-25 22:21:28,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 270 places, 503 transitions, 16872 flow [2021-03-25 22:21:29,170 INFO L129 PetriNetUnfolder]: 354/1144 cut-off events. [2021-03-25 22:21:29,171 INFO L130 PetriNetUnfolder]: For 39524/39964 co-relation queries the response was YES. [2021-03-25 22:21:29,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12389 conditions, 1144 events. 354/1144 cut-off events. For 39524/39964 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10064 event pairs, 0 based on Foata normal form. 83/1222 useless extension candidates. Maximal degree in co-relation 12292. Up to 472 conditions per place. [2021-03-25 22:21:29,188 INFO L142 LiptonReduction]: Number of co-enabled transitions 1984 [2021-03-25 22:21:29,437 INFO L154 LiptonReduction]: Checked pairs total: 1640 [2021-03-25 22:21:29,438 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 22:21:29,438 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 487 [2021-03-25 22:21:29,439 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 503 transitions, 16872 flow [2021-03-25 22:21:29,439 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 22:21:29,439 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:29,439 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:29,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:21:29,640 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:29,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2140699291, now seen corresponding path program 1 times [2021-03-25 22:21:29,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:29,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662820729] [2021-03-25 22:21:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:29,657 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:29,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:29,668 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:29,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:29,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:29,691 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:29,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,699 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 22:21:29,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662820729] [2021-03-25 22:21:29,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955269089] [2021-03-25 22:21:29,699 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 22:21:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:29,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 22:21:29,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:29,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:29,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:29,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:29,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:29,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:29,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:29,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:29,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:29,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:29,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:29,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:29,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:29,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:29,826 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 22:21:29,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:29,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:29,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:29,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:29,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:29,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:29,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:29,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:29,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,856 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 22:21:29,857 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 22:21:29,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:29,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:29,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:29,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:29,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:29,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 22:21:29,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:29,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:29,882 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 22:21:29,883 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 22:21:29,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:29,890 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 22:21:29,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:29,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-25 22:21:29,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112667566] [2021-03-25 22:21:29,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 22:21:29,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:29,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 22:21:29,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-03-25 22:21:29,892 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 306 [2021-03-25 22:21:29,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 503 transitions, 16872 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 22:21:29,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:29,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 306 [2021-03-25 22:21:29,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:31,081 INFO L129 PetriNetUnfolder]: 359/1160 cut-off events. [2021-03-25 22:21:31,081 INFO L130 PetriNetUnfolder]: For 40724/40941 co-relation queries the response was YES. [2021-03-25 22:21:31,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13260 conditions, 1160 events. 359/1160 cut-off events. For 40724/40941 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10034 event pairs, 0 based on Foata normal form. 65/1221 useless extension candidates. Maximal degree in co-relation 13161. Up to 482 conditions per place. [2021-03-25 22:21:31,093 INFO L132 encePairwiseOnDemand]: 185/306 looper letters, 273 selfloop transitions, 255 changer transitions 0/539 dead transitions. [2021-03-25 22:21:31,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 539 transitions, 18794 flow [2021-03-25 22:21:31,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-25 22:21:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-03-25 22:21:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1862 transitions. [2021-03-25 22:21:31,096 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.289760348583878 [2021-03-25 22:21:31,096 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1862 transitions. [2021-03-25 22:21:31,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1862 transitions. [2021-03-25 22:21:31,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:31,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1862 transitions. [2021-03-25 22:21:31,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 88.66666666666667) internal successors, (1862), 21 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:31,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 306.0) internal successors, (6732), 22 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:31,100 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 306.0) internal successors, (6732), 22 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:31,100 INFO L185 Difference]: Start difference. First operand has 270 places, 503 transitions, 16872 flow. Second operand 21 states and 1862 transitions. [2021-03-25 22:21:31,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 539 transitions, 18794 flow [2021-03-25 22:21:31,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 539 transitions, 18323 flow, removed 161 selfloop flow, removed 16 redundant places. [2021-03-25 22:21:31,347 INFO L241 Difference]: Finished difference. Result has 277 places, 513 transitions, 17463 flow [2021-03-25 22:21:31,347 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=16445, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=17463, PETRI_PLACES=277, PETRI_TRANSITIONS=513} [2021-03-25 22:21:31,347 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2021-03-25 22:21:31,347 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:31,347 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 513 transitions, 17463 flow [2021-03-25 22:21:31,348 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 513 transitions, 17463 flow [2021-03-25 22:21:31,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 277 places, 513 transitions, 17463 flow [2021-03-25 22:21:31,536 INFO L129 PetriNetUnfolder]: 359/1162 cut-off events. [2021-03-25 22:21:31,536 INFO L130 PetriNetUnfolder]: For 39766/40287 co-relation queries the response was YES. [2021-03-25 22:21:31,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12647 conditions, 1162 events. 359/1162 cut-off events. For 39766/40287 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10341 event pairs, 0 based on Foata normal form. 102/1257 useless extension candidates. Maximal degree in co-relation 12550. Up to 468 conditions per place. [2021-03-25 22:21:31,556 INFO L142 LiptonReduction]: Number of co-enabled transitions 2014 [2021-03-25 22:21:31,801 INFO L154 LiptonReduction]: Checked pairs total: 673 [2021-03-25 22:21:31,801 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 22:21:31,801 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 454 [2021-03-25 22:21:31,803 INFO L480 AbstractCegarLoop]: Abstraction has has 277 places, 512 transitions, 17467 flow [2021-03-25 22:21:31,803 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 22:21:31,803 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:31,803 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:32,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-03-25 22:21:32,004 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:32,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2137259810, now seen corresponding path program 1 times [2021-03-25 22:21:32,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:32,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352961168] [2021-03-25 22:21:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:32,020 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:32,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:32,031 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:32,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,039 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 22:21:32,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:32,047 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 22:21:32,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,055 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:32,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,062 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 22:21:32,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352961168] [2021-03-25 22:21:32,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442365893] [2021-03-25 22:21:32,063 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 22:21:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:32,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 22:21:32,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:32,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:32,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:32,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:32,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:32,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:32,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:32,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:32,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:32,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:32,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:32,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:32,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,171 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 22:21:32,172 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 22:21:32,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:32,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:21:32,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:32,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:21:32,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:32,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:21:32,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:32,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 22:21:32,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:32,213 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-25 22:21:32,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,215 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-25 22:21:32,216 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,218 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.4 percent of original size 58 [2021-03-25 22:21:32,219 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.4 percent of original size 58 [2021-03-25 22:21:32,220 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-25 22:21:32,221 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:32,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:32,222 INFO L142 QuantifierPusher]: treesize reduction -4, result has 105.9 percent of original size [2021-03-25 22:21:32,240 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:32,278 INFO L147 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size 2624 [2021-03-25 22:21:32,283 INFO L147 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size 2624 [2021-03-25 22:21:32,289 INFO L142 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size [2021-03-25 22:21:32,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2624 [2021-03-25 22:21:32,390 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 22:21:32,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:32,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-25 22:21:32,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439566044] [2021-03-25 22:21:32,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 22:21:32,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:32,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 22:21:32,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-03-25 22:21:32,392 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 309 [2021-03-25 22:21:32,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 512 transitions, 17467 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 22:21:32,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:32,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 309 [2021-03-25 22:21:32,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:33,847 INFO L129 PetriNetUnfolder]: 399/1291 cut-off events. [2021-03-25 22:21:33,847 INFO L130 PetriNetUnfolder]: For 49400/49652 co-relation queries the response was YES. [2021-03-25 22:21:33,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14755 conditions, 1291 events. 399/1291 cut-off events. For 49400/49652 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11383 event pairs, 0 based on Foata normal form. 65/1350 useless extension candidates. Maximal degree in co-relation 14656. Up to 536 conditions per place. [2021-03-25 22:21:33,860 INFO L132 encePairwiseOnDemand]: 142/309 looper letters, 87 selfloop transitions, 469 changer transitions 0/567 dead transitions. [2021-03-25 22:21:33,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 567 transitions, 20326 flow [2021-03-25 22:21:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-25 22:21:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-03-25 22:21:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2290 transitions. [2021-03-25 22:21:33,863 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2850385860094598 [2021-03-25 22:21:33,863 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2290 transitions. [2021-03-25 22:21:33,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2290 transitions. [2021-03-25 22:21:33,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:33,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2290 transitions. [2021-03-25 22:21:33,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 88.07692307692308) internal successors, (2290), 26 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 22:21:33,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 309.0) internal successors, (8343), 27 states have internal predecessors, (8343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:33,869 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 309.0) internal successors, (8343), 27 states have internal predecessors, (8343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:33,869 INFO L185 Difference]: Start difference. First operand has 277 places, 512 transitions, 17467 flow. Second operand 26 states and 2290 transitions. [2021-03-25 22:21:33,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 567 transitions, 20326 flow [2021-03-25 22:21:34,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 567 transitions, 20034 flow, removed 97 selfloop flow, removed 11 redundant places. [2021-03-25 22:21:34,099 INFO L241 Difference]: Finished difference. Result has 296 places, 562 transitions, 20239 flow [2021-03-25 22:21:34,100 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=17175, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=20239, PETRI_PLACES=296, PETRI_TRANSITIONS=562} [2021-03-25 22:21:34,100 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2021-03-25 22:21:34,100 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:34,100 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 562 transitions, 20239 flow [2021-03-25 22:21:34,100 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 562 transitions, 20239 flow [2021-03-25 22:21:34,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 296 places, 562 transitions, 20239 flow [2021-03-25 22:21:34,288 INFO L129 PetriNetUnfolder]: 400/1290 cut-off events. [2021-03-25 22:21:34,288 INFO L130 PetriNetUnfolder]: For 49458/49920 co-relation queries the response was YES. [2021-03-25 22:21:34,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14847 conditions, 1290 events. 400/1290 cut-off events. For 49458/49920 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11536 event pairs, 0 based on Foata normal form. 81/1364 useless extension candidates. Maximal degree in co-relation 14745. Up to 528 conditions per place. [2021-03-25 22:21:34,343 INFO L142 LiptonReduction]: Number of co-enabled transitions 2196 [2021-03-25 22:21:34,928 INFO L154 LiptonReduction]: Checked pairs total: 5840 [2021-03-25 22:21:34,928 INFO L156 LiptonReduction]: Total number of compositions: 16 [2021-03-25 22:21:34,928 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 828 [2021-03-25 22:21:34,930 INFO L480 AbstractCegarLoop]: Abstraction has has 296 places, 562 transitions, 20239 flow [2021-03-25 22:21:34,930 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 22:21:34,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:34,931 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:35,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:21:35,132 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2070315697, now seen corresponding path program 1 times [2021-03-25 22:21:35,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:35,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098647913] [2021-03-25 22:21:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:35,149 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:35,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,154 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-25 22:21:35,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:35,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:35,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:21:35,184 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:35,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,192 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 22:21:35,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098647913] [2021-03-25 22:21:35,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80258683] [2021-03-25 22:21:35,192 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 22:21:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:35,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 22:21:35,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:35,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:35,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:35,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:35,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:35,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:35,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:35,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:35,295 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 22:21:35,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:35,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:35,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:35,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:35,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:35,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:35,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:35,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:35,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:35,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:35,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:35,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:35,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,333 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 22:21:35,334 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 22:21:35,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:35,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:35,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:35,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:35,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:35,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 22:21:35,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:21:35,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:21:35,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:35,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:35,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 22:21:35,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:35,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 22:21:35,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 22:21:35,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:35,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:35,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:21:35,378 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 22:21:35,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:21:35,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-25 22:21:35,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041248891] [2021-03-25 22:21:35,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 22:21:35,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:21:35,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 22:21:35,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-03-25 22:21:35,380 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 325 [2021-03-25 22:21:35,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 562 transitions, 20239 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 22:21:35,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:21:35,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 325 [2021-03-25 22:21:35,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:21:36,638 INFO L129 PetriNetUnfolder]: 411/1328 cut-off events. [2021-03-25 22:21:36,638 INFO L130 PetriNetUnfolder]: For 51496/51706 co-relation queries the response was YES. [2021-03-25 22:21:36,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16100 conditions, 1328 events. 411/1328 cut-off events. For 51496/51706 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11811 event pairs, 0 based on Foata normal form. 63/1385 useless extension candidates. Maximal degree in co-relation 15996. Up to 567 conditions per place. [2021-03-25 22:21:36,654 INFO L132 encePairwiseOnDemand]: 217/325 looper letters, 373 selfloop transitions, 217 changer transitions 0/601 dead transitions. [2021-03-25 22:21:36,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 601 transitions, 22568 flow [2021-03-25 22:21:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-25 22:21:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-03-25 22:21:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1792 transitions. [2021-03-25 22:21:36,656 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2756923076923077 [2021-03-25 22:21:36,657 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1792 transitions. [2021-03-25 22:21:36,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1792 transitions. [2021-03-25 22:21:36,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:21:36,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1792 transitions. [2021-03-25 22:21:36,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 89.6) internal successors, (1792), 20 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:36,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 325.0) internal successors, (6825), 21 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:36,662 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 325.0) internal successors, (6825), 21 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:21:36,663 INFO L185 Difference]: Start difference. First operand has 296 places, 562 transitions, 20239 flow. Second operand 20 states and 1792 transitions. [2021-03-25 22:21:36,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 601 transitions, 22568 flow [2021-03-25 22:21:36,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 601 transitions, 21865 flow, removed 219 selfloop flow, removed 19 redundant places. [2021-03-25 22:21:36,925 INFO L241 Difference]: Finished difference. Result has 299 places, 574 transitions, 20686 flow [2021-03-25 22:21:36,925 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=19630, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20686, PETRI_PLACES=299, PETRI_TRANSITIONS=574} [2021-03-25 22:21:36,925 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2021-03-25 22:21:36,925 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:21:36,926 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 574 transitions, 20686 flow [2021-03-25 22:21:36,926 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 574 transitions, 20686 flow [2021-03-25 22:21:36,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 299 places, 574 transitions, 20686 flow [2021-03-25 22:21:37,141 INFO L129 PetriNetUnfolder]: 410/1321 cut-off events. [2021-03-25 22:21:37,141 INFO L130 PetriNetUnfolder]: For 50855/51197 co-relation queries the response was YES. [2021-03-25 22:21:37,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15193 conditions, 1321 events. 410/1321 cut-off events. For 50855/51197 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11987 event pairs, 0 based on Foata normal form. 46/1359 useless extension candidates. Maximal degree in co-relation 15090. Up to 520 conditions per place. [2021-03-25 22:21:37,167 INFO L142 LiptonReduction]: Number of co-enabled transitions 2240 [2021-03-25 22:21:37,449 INFO L154 LiptonReduction]: Checked pairs total: 371 [2021-03-25 22:21:37,449 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:21:37,449 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 524 [2021-03-25 22:21:37,451 INFO L480 AbstractCegarLoop]: Abstraction has has 299 places, 574 transitions, 20686 flow [2021-03-25 22:21:37,452 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 22:21:37,452 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:21:37,452 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:21:37,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-03-25 22:21:37,656 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:21:37,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:21:37,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2070409441, now seen corresponding path program 1 times [2021-03-25 22:21:37,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:21:37,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858375747] [2021-03-25 22:21:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:21:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:37,672 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 22:21:37,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,677 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-25 22:21:37,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:21:37,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:37,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:37,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:21:37,706 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 22:21:37,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,713 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 22:21:37,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858375747] [2021-03-25 22:21:37,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683396333] [2021-03-25 22:21:37,714 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 22:21:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:21:37,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 22:21:37,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:21:37,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:21:37,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:37,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:37,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:21:37,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:37,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:21:37,789 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 22:21:37,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:37,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 22:21:37,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:37,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:37,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:37,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:21:37,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:37,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:37,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:21:37,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 22:21:37,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,814 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 22:21:37,814 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 22:21:37,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:21:37,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 22:21:37,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:37,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 22:21:37,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 22:21:37,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,832 INFO L147 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size 23 [2021-03-25 22:21:37,832 INFO L142 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size [2021-03-25 22:21:37,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:21:37,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 22:21:37,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-25 22:21:37,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-25 22:21:37,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-25 22:21:37,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,862 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.8 percent of original size 55 [2021-03-25 22:21:37,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,863 INFO L142 QuantifierPusher]: treesize reduction -2, result has 104.7 percent of original size [2021-03-25 22:21:37,864 INFO L147 QuantifierPusher]: treesize reduction -1, result has 101.9 percent of original size 54 [2021-03-25 22:21:37,893 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:37,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,916 INFO L147 QuantifierPusher]: treesize reduction -1, result has 104.3 percent of original size 24 [2021-03-25 22:21:37,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,918 INFO L147 QuantifierPusher]: treesize reduction -1, result has 104.5 percent of original size 23 [2021-03-25 22:21:37,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,920 INFO L147 QuantifierPusher]: treesize reduction -2, result has 107.4 percent of original size 29 [2021-03-25 22:21:37,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,922 INFO L147 QuantifierPusher]: treesize reduction -1, result has 104.5 percent of original size 23 [2021-03-25 22:21:37,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,924 INFO L147 QuantifierPusher]: treesize reduction -4, result has 111.8 percent of original size 38 [2021-03-25 22:21:37,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,925 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.4 percent of original size 39 [2021-03-25 22:21:37,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,926 INFO L142 QuantifierPusher]: treesize reduction -2, result has 105.0 percent of original size [2021-03-25 22:21:37,927 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.1 percent of original size 41 [2021-03-25 22:21:37,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,929 INFO L147 QuantifierPusher]: treesize reduction -4, result has 113.3 percent of original size 34 [2021-03-25 22:21:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,930 INFO L142 QuantifierPusher]: treesize reduction -4, result has 107.0 percent of original size [2021-03-25 22:21:37,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-25 22:21:37,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-25 22:21:37,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:37,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 22:21:37,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:21:37,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:21:38,126 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:38,340 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:38,649 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:39,178 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:40,017 INFO L842 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:21:49,376 INFO L842 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:22:20,146 INFO L842 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:23:03,981 INFO L842 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:23:55,538 INFO L842 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:24:54,381 INFO L842 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:26:00,307 INFO L842 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:27:13,520 INFO L842 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:28:33,552 INFO L842 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:30:01,422 INFO L842 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:31:36,508 INFO L842 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:33:18,567 INFO L842 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 22:35:08,235 INFO L842 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown