/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 02:47:05,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 02:47:05,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 02:47:05,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 02:47:05,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 02:47:05,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 02:47:05,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 02:47:05,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 02:47:05,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 02:47:05,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 02:47:05,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 02:47:05,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 02:47:05,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 02:47:05,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 02:47:05,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 02:47:05,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 02:47:05,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 02:47:05,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 02:47:05,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 02:47:05,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 02:47:05,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 02:47:05,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 02:47:05,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 02:47:05,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 02:47:05,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 02:47:05,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 02:47:05,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 02:47:05,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 02:47:05,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 02:47:05,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 02:47:05,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 02:47:05,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 02:47:05,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 02:47:05,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 02:47:05,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 02:47:05,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 02:47:05,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 02:47:05,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 02:47:05,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 02:47:05,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 02:47:05,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 02:47:05,410 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-RepeatedVariableLbe.epf [2021-03-25 02:47:05,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 02:47:05,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 02:47:05,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 02:47:05,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 02:47:05,449 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 02:47:05,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 02:47:05,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 02:47:05,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 02:47:05,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 02:47:05,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 02:47:05,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 02:47:05,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 02:47:05,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 02:47:05,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 02:47:05,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 02:47:05,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 02:47:05,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 02:47:05,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 02:47:05,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 02:47:05,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 02:47:05,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 02:47:05,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 02:47:05,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 02:47:05,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 02:47:05,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 02:47:05,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 02:47:05,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 02:47:05,712 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 02:47:05,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2021-03-25 02:47:05,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ee930d9/83ac5f086a8a4c4e9b9f85160ed428d2/FLAG9d8053dbc [2021-03-25 02:47:07,015 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 02:47:07,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2021-03-25 02:47:07,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ee930d9/83ac5f086a8a4c4e9b9f85160ed428d2/FLAG9d8053dbc [2021-03-25 02:47:07,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ee930d9/83ac5f086a8a4c4e9b9f85160ed428d2 [2021-03-25 02:47:07,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 02:47:07,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 02:47:07,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 02:47:07,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 02:47:07,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 02:47:07,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8ab63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07, skipping insertion in model container [2021-03-25 02:47:07,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 02:47:07,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 02:47:07,699 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-2.i[30929,30942] [2021-03-25 02:47:07,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 02:47:07,706 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 02:47:07,741 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-2.i[30929,30942] [2021-03-25 02:47:07,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 02:47:07,781 INFO L208 MainTranslator]: Completed translation [2021-03-25 02:47:07,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07 WrapperNode [2021-03-25 02:47:07,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 02:47:07,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 02:47:07,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 02:47:07,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 02:47:07,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 02:47:07,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 02:47:07,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 02:47:07,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 02:47:07,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (1/1) ... [2021-03-25 02:47:07,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 02:47:07,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 02:47:07,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 02:47:07,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 02:47:07,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (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 02:47:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-03-25 02:47:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-03-25 02:47:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-03-25 02:47:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-03-25 02:47:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 02:47:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 02:47:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 02:47:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 02:47:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 02:47:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 02:47:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 02:47:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 02:47:07,876 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 02:47:08,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 02:47:08,094 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-25 02:47:08,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:47:08 BoogieIcfgContainer [2021-03-25 02:47:08,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 02:47:08,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 02:47:08,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 02:47:08,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 02:47:08,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 02:47:07" (1/3) ... [2021-03-25 02:47:08,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d0d496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:47:08, skipping insertion in model container [2021-03-25 02:47:08,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:47:07" (2/3) ... [2021-03-25 02:47:08,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d0d496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:47:08, skipping insertion in model container [2021-03-25 02:47:08,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:47:08" (3/3) ... [2021-03-25 02:47:08,099 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-2.i [2021-03-25 02:47:08,102 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 02:47:08,105 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 02:47:08,106 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 02:47:08,119 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,120 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,121 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,122 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,123 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,123 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,123 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,123 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,123 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,123 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,123 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,123 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,124 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,125 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,126 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,126 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,126 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,126 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,126 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,126 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,127 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,127 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,128 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,128 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,128 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,128 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,131 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,131 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,131 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,131 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,131 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,131 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 02:47:08,132 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 02:47:08,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 02:47:08,156 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 02:47:08,156 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 02:47:08,156 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 02:47:08,156 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 02:47:08,156 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 02:47:08,156 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 02:47:08,157 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 02:47:08,157 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 02:47:08,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 134 flow [2021-03-25 02:47:08,182 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-25 02:47:08,182 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 02:47:08,184 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 02:47:08,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 134 flow [2021-03-25 02:47:08,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 126 flow [2021-03-25 02:47:08,188 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:08,194 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-25 02:47:08,196 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-25 02:47:08,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 126 flow [2021-03-25 02:47:08,206 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-25 02:47:08,206 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 02:47:08,207 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 02:47:08,208 INFO L142 LiptonReduction]: Number of co-enabled transitions 1080 [2021-03-25 02:47:09,428 INFO L154 LiptonReduction]: Checked pairs total: 666 [2021-03-25 02:47:09,428 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 02:47:09,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1243 [2021-03-25 02:47:09,437 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-25 02:47:09,437 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 02:47:09,438 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:09,438 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:09,438 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:09,443 INFO L82 PathProgramCache]: Analyzing trace with hash -86387381, now seen corresponding path program 1 times [2021-03-25 02:47:09,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:09,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215449889] [2021-03-25 02:47:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:09,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:09,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:47:09,599 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 02:47:09,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:09,605 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-25 02:47:09,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:09,613 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 02:47:09,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215449889] [2021-03-25 02:47:09,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:09,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 02:47:09,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217097574] [2021-03-25 02:47:09,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 02:47:09,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:09,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 02:47:09,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 02:47:09,628 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2021-03-25 02:47:09,629 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 02:47:09,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:09,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2021-03-25 02:47:09,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:09,672 INFO L129 PetriNetUnfolder]: 40/127 cut-off events. [2021-03-25 02:47:09,672 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 02:47:09,673 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 02:47:09,674 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 5 selfloop transitions, 7 changer transitions 7/36 dead transitions. [2021-03-25 02:47:09,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 114 flow [2021-03-25 02:47:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 02:47:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 02:47:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2021-03-25 02:47:09,682 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7838383838383839 [2021-03-25 02:47:09,683 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2021-03-25 02:47:09,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2021-03-25 02:47:09,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:09,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2021-03-25 02:47:09,687 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 02:47:09,691 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 02:47:09,691 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 02:47:09,692 INFO L185 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 5 states and 388 transitions. [2021-03-25 02:47:09,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 114 flow [2021-03-25 02:47:09,694 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 02:47:09,695 INFO L241 Difference]: Finished difference. Result has 35 places, 28 transitions, 95 flow [2021-03-25 02:47:09,696 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 02:47:09,696 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-25 02:47:09,697 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:09,697 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 28 transitions, 95 flow [2021-03-25 02:47:09,697 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 28 transitions, 95 flow [2021-03-25 02:47:09,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 95 flow [2021-03-25 02:47:09,702 INFO L129 PetriNetUnfolder]: 13/64 cut-off events. [2021-03-25 02:47:09,702 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-25 02:47:09,703 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 02:47:09,703 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-25 02:47:09,848 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-25 02:47:10,077 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-25 02:47:10,587 INFO L154 LiptonReduction]: Checked pairs total: 83 [2021-03-25 02:47:10,587 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 02:47:10,587 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 890 [2021-03-25 02:47:10,588 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 83 flow [2021-03-25 02:47:10,588 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 02:47:10,588 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:10,588 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:10,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 02:47:10,589 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:10,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1815707967, now seen corresponding path program 1 times [2021-03-25 02:47:10,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:10,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887216378] [2021-03-25 02:47:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:10,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:10,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:47:10,657 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:10,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:10,663 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 02:47:10,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:10,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:10,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:10,678 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 02:47:10,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887216378] [2021-03-25 02:47:10,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:10,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:10,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829017821] [2021-03-25 02:47:10,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 02:47:10,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:10,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 02:47:10,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 02:47:10,682 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2021-03-25 02:47:10,683 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 02:47:10,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:10,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2021-03-25 02:47:10,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:10,727 INFO L129 PetriNetUnfolder]: 38/104 cut-off events. [2021-03-25 02:47:10,727 INFO L130 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2021-03-25 02:47:10,727 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 02:47:10,728 INFO L132 encePairwiseOnDemand]: 100/107 looper letters, 5 selfloop transitions, 14 changer transitions 0/30 dead transitions. [2021-03-25 02:47:10,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 160 flow [2021-03-25 02:47:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 02:47:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 02:47:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 560 transitions. [2021-03-25 02:47:10,730 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7476635514018691 [2021-03-25 02:47:10,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 560 transitions. [2021-03-25 02:47:10,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 560 transitions. [2021-03-25 02:47:10,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:10,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 560 transitions. [2021-03-25 02:47:10,731 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 02:47:10,733 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 02:47:10,733 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 02:47:10,733 INFO L185 Difference]: Start difference. First operand has 26 places, 22 transitions, 83 flow. Second operand 7 states and 560 transitions. [2021-03-25 02:47:10,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 160 flow [2021-03-25 02:47:10,734 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 02:47:10,734 INFO L241 Difference]: Finished difference. Result has 35 places, 29 transitions, 168 flow [2021-03-25 02:47:10,734 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 02:47:10,735 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-25 02:47:10,735 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:10,735 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-25 02:47:10,735 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-25 02:47:10,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 168 flow [2021-03-25 02:47:10,741 INFO L129 PetriNetUnfolder]: 24/86 cut-off events. [2021-03-25 02:47:10,741 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2021-03-25 02:47:10,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 86 events. 24/86 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 322 event pairs, 3 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 245. Up to 30 conditions per place. [2021-03-25 02:47:10,745 INFO L142 LiptonReduction]: Number of co-enabled transitions 204 [2021-03-25 02:47:10,849 INFO L154 LiptonReduction]: Checked pairs total: 96 [2021-03-25 02:47:10,849 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 02:47:10,849 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 114 [2021-03-25 02:47:10,850 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 168 flow [2021-03-25 02:47:10,850 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 02:47:10,850 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:10,850 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:10,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 02:47:10,850 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:10,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:10,851 INFO L82 PathProgramCache]: Analyzing trace with hash 289856118, now seen corresponding path program 1 times [2021-03-25 02:47:10,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:10,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833917147] [2021-03-25 02:47:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:10,884 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:10,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:10,889 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 02:47:10,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:10,895 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:10,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:10,900 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 02:47:10,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833917147] [2021-03-25 02:47:10,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:10,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 02:47:10,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420229191] [2021-03-25 02:47:10,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 02:47:10,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:10,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 02:47:10,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 02:47:10,902 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 115 [2021-03-25 02:47:10,902 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 02:47:10,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:10,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 115 [2021-03-25 02:47:10,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:10,933 INFO L129 PetriNetUnfolder]: 40/108 cut-off events. [2021-03-25 02:47:10,933 INFO L130 PetriNetUnfolder]: For 285/291 co-relation queries the response was YES. [2021-03-25 02:47:10,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 108 events. 40/108 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 424 event pairs, 3 based on Foata normal form. 8/98 useless extension candidates. Maximal degree in co-relation 376. Up to 59 conditions per place. [2021-03-25 02:47:10,934 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 12 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2021-03-25 02:47:10,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 236 flow [2021-03-25 02:47:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 02:47:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 02:47:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2021-03-25 02:47:10,935 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6991304347826087 [2021-03-25 02:47:10,935 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2021-03-25 02:47:10,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2021-03-25 02:47:10,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:10,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2021-03-25 02:47:10,936 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 02:47:10,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:10,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:10,938 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 168 flow. Second operand 5 states and 402 transitions. [2021-03-25 02:47:10,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 236 flow [2021-03-25 02:47:10,939 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 02:47:10,940 INFO L241 Difference]: Finished difference. Result has 38 places, 30 transitions, 178 flow [2021-03-25 02:47:10,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, 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 02:47:10,940 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-25 02:47:10,940 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:10,940 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-25 02:47:10,940 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-25 02:47:10,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 178 flow [2021-03-25 02:47:10,946 INFO L129 PetriNetUnfolder]: 30/104 cut-off events. [2021-03-25 02:47:10,946 INFO L130 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2021-03-25 02:47:10,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 104 events. 30/104 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 439 event pairs, 3 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 294. Up to 31 conditions per place. [2021-03-25 02:47:10,947 INFO L142 LiptonReduction]: Number of co-enabled transitions 208 [2021-03-25 02:47:11,026 INFO L154 LiptonReduction]: Checked pairs total: 63 [2021-03-25 02:47:11,027 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 02:47:11,027 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 87 [2021-03-25 02:47:11,027 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 176 flow [2021-03-25 02:47:11,028 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 02:47:11,028 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:11,028 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:11,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 02:47:11,028 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:11,028 INFO L82 PathProgramCache]: Analyzing trace with hash 287081109, now seen corresponding path program 1 times [2021-03-25 02:47:11,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:11,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685053298] [2021-03-25 02:47:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:11,065 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:11,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,069 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 02:47:11,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:11,081 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:11,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,086 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 02:47:11,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685053298] [2021-03-25 02:47:11,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:11,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 02:47:11,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820685649] [2021-03-25 02:47:11,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 02:47:11,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:11,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 02:47:11,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 02:47:11,088 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 120 [2021-03-25 02:47:11,089 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 02:47:11,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:11,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 120 [2021-03-25 02:47:11,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:11,149 INFO L129 PetriNetUnfolder]: 36/98 cut-off events. [2021-03-25 02:47:11,149 INFO L130 PetriNetUnfolder]: For 267/273 co-relation queries the response was YES. [2021-03-25 02:47:11,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 98 events. 36/98 cut-off events. For 267/273 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 362 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 02:47:11,150 INFO L132 encePairwiseOnDemand]: 109/120 looper letters, 12 selfloop transitions, 16 changer transitions 0/38 dead transitions. [2021-03-25 02:47:11,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 299 flow [2021-03-25 02:47:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 02:47:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 02:47:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 562 transitions. [2021-03-25 02:47:11,152 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.669047619047619 [2021-03-25 02:47:11,152 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 562 transitions. [2021-03-25 02:47:11,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 562 transitions. [2021-03-25 02:47:11,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:11,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 562 transitions. [2021-03-25 02:47:11,153 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 02:47:11,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:11,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:11,154 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 176 flow. Second operand 7 states and 562 transitions. [2021-03-25 02:47:11,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 299 flow [2021-03-25 02:47:11,156 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 02:47:11,156 INFO L241 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2021-03-25 02:47:11,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, 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 02:47:11,156 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2021-03-25 02:47:11,157 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:11,157 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-25 02:47:11,157 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-25 02:47:11,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 267 flow [2021-03-25 02:47:11,178 INFO L129 PetriNetUnfolder]: 34/96 cut-off events. [2021-03-25 02:47:11,178 INFO L130 PetriNetUnfolder]: For 347/347 co-relation queries the response was YES. [2021-03-25 02:47:11,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 96 events. 34/96 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 367 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 02:47:11,179 INFO L142 LiptonReduction]: Number of co-enabled transitions 230 [2021-03-25 02:47:11,250 INFO L154 LiptonReduction]: Checked pairs total: 54 [2021-03-25 02:47:11,251 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 02:47:11,251 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-03-25 02:47:11,251 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 265 flow [2021-03-25 02:47:11,252 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 02:47:11,252 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:11,252 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:11,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 02:47:11,252 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:11,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2115172427, now seen corresponding path program 1 times [2021-03-25 02:47:11,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:11,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267112284] [2021-03-25 02:47:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:11,282 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:11,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,287 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-03-25 02:47:11,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,292 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 02:47:11,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:11,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:11,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,306 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 02:47:11,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267112284] [2021-03-25 02:47:11,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438073401] [2021-03-25 02:47:11,307 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 02:47:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:11,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 02:47:11,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:11,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:11,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:11,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:11,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:11,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:11,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:11,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:11,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:11,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:11,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:11,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:11,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:11,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:11,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:11,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:11,440 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 02:47:11,443 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 02:47:11,445 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:11,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:11,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:11,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:11,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:11,463 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 02:47:11,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:11,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 02:47:11,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145799796] [2021-03-25 02:47:11,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 02:47:11,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:11,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 02:47:11,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 02:47:11,465 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 124 [2021-03-25 02:47:11,465 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 02:47:11,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:11,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 124 [2021-03-25 02:47:11,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:11,593 INFO L129 PetriNetUnfolder]: 42/123 cut-off events. [2021-03-25 02:47:11,593 INFO L130 PetriNetUnfolder]: For 625/628 co-relation queries the response was YES. [2021-03-25 02:47:11,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 123 events. 42/123 cut-off events. For 625/628 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 463 event pairs, 0 based on Foata normal form. 6/106 useless extension candidates. Maximal degree in co-relation 510. Up to 53 conditions per place. [2021-03-25 02:47:11,595 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 13 selfloop transitions, 29 changer transitions 0/51 dead transitions. [2021-03-25 02:47:11,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 513 flow [2021-03-25 02:47:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 02:47:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 02:47:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 887 transitions. [2021-03-25 02:47:11,597 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6502932551319648 [2021-03-25 02:47:11,597 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 887 transitions. [2021-03-25 02:47:11,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 887 transitions. [2021-03-25 02:47:11,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:11,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 887 transitions. [2021-03-25 02:47:11,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 80.63636363636364) internal successors, (887), 11 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:11,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 124.0) internal successors, (1488), 12 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:11,600 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 124.0) internal successors, (1488), 12 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:11,600 INFO L185 Difference]: Start difference. First operand has 41 places, 35 transitions, 265 flow. Second operand 11 states and 887 transitions. [2021-03-25 02:47:11,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 513 flow [2021-03-25 02:47:11,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 478 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-25 02:47:11,604 INFO L241 Difference]: Finished difference. Result has 52 places, 51 transitions, 482 flow [2021-03-25 02:47:11,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=482, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2021-03-25 02:47:11,604 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2021-03-25 02:47:11,604 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:11,604 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 51 transitions, 482 flow [2021-03-25 02:47:11,604 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 51 transitions, 482 flow [2021-03-25 02:47:11,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 51 transitions, 482 flow [2021-03-25 02:47:11,619 INFO L129 PetriNetUnfolder]: 42/123 cut-off events. [2021-03-25 02:47:11,620 INFO L130 PetriNetUnfolder]: For 694/694 co-relation queries the response was YES. [2021-03-25 02:47:11,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 123 events. 42/123 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 441 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 503. Up to 41 conditions per place. [2021-03-25 02:47:11,621 INFO L142 LiptonReduction]: Number of co-enabled transitions 298 [2021-03-25 02:47:11,815 INFO L154 LiptonReduction]: Checked pairs total: 245 [2021-03-25 02:47:11,815 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-25 02:47:11,815 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 211 [2021-03-25 02:47:11,816 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 475 flow [2021-03-25 02:47:11,816 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 02:47:11,817 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:11,817 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:12,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:47:12,031 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:12,031 INFO L82 PathProgramCache]: Analyzing trace with hash 309759606, now seen corresponding path program 1 times [2021-03-25 02:47:12,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:12,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33927457] [2021-03-25 02:47:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:12,065 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:12,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,069 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-25 02:47:12,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:12,077 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-25 02:47:12,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:12,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:12,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,092 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 02:47:12,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33927457] [2021-03-25 02:47:12,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423819977] [2021-03-25 02:47:12,093 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 02:47:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:12,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 02:47:12,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:12,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:12,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:12,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:12,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:12,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:12,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:12,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:12,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:12,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:12,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:12,205 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-25 02:47:12,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:12,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:12,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:12,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:12,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:12,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:12,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:12,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:12,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:12,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,230 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 02:47:12,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:12,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 02:47:12,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18908575] [2021-03-25 02:47:12,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 02:47:12,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 02:47:12,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-25 02:47:12,232 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 134 [2021-03-25 02:47:12,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 475 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 02:47:12,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:12,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 134 [2021-03-25 02:47:12,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:12,359 INFO L129 PetriNetUnfolder]: 43/128 cut-off events. [2021-03-25 02:47:12,359 INFO L130 PetriNetUnfolder]: For 935/948 co-relation queries the response was YES. [2021-03-25 02:47:12,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 128 events. 43/128 cut-off events. For 935/948 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 519 event pairs, 0 based on Foata normal form. 10/113 useless extension candidates. Maximal degree in co-relation 603. Up to 58 conditions per place. [2021-03-25 02:47:12,361 INFO L132 encePairwiseOnDemand]: 117/134 looper letters, 27 selfloop transitions, 20 changer transitions 0/56 dead transitions. [2021-03-25 02:47:12,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 656 flow [2021-03-25 02:47:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 02:47:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 02:47:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 572 transitions. [2021-03-25 02:47:12,362 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6098081023454158 [2021-03-25 02:47:12,362 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 572 transitions. [2021-03-25 02:47:12,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 572 transitions. [2021-03-25 02:47:12,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:12,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 572 transitions. [2021-03-25 02:47:12,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:12,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:12,365 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:12,365 INFO L185 Difference]: Start difference. First operand has 52 places, 50 transitions, 475 flow. Second operand 7 states and 572 transitions. [2021-03-25 02:47:12,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 656 flow [2021-03-25 02:47:12,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 503 flow, removed 64 selfloop flow, removed 6 redundant places. [2021-03-25 02:47:12,369 INFO L241 Difference]: Finished difference. Result has 53 places, 51 transitions, 428 flow [2021-03-25 02:47:12,369 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2021-03-25 02:47:12,369 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-25 02:47:12,369 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:12,369 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 51 transitions, 428 flow [2021-03-25 02:47:12,369 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 51 transitions, 428 flow [2021-03-25 02:47:12,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 51 transitions, 428 flow [2021-03-25 02:47:12,377 INFO L129 PetriNetUnfolder]: 43/126 cut-off events. [2021-03-25 02:47:12,377 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-25 02:47:12,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 126 events. 43/126 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 492 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 450. Up to 45 conditions per place. [2021-03-25 02:47:12,379 INFO L142 LiptonReduction]: Number of co-enabled transitions 294 [2021-03-25 02:47:12,493 INFO L154 LiptonReduction]: Checked pairs total: 115 [2021-03-25 02:47:12,493 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 02:47:12,494 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 125 [2021-03-25 02:47:12,498 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 433 flow [2021-03-25 02:47:12,499 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 02:47:12,499 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:12,499 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:12,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:47:12,714 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:12,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1000213740, now seen corresponding path program 1 times [2021-03-25 02:47:12,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:12,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526756901] [2021-03-25 02:47:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:12,755 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:12,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,761 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:12,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:12,771 INFO L142 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-03-25 02:47:12,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:12,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:12,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,786 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 02:47:12,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526756901] [2021-03-25 02:47:12,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:12,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:12,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885715032] [2021-03-25 02:47:12,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 02:47:12,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:12,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 02:47:12,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 02:47:12,789 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 139 [2021-03-25 02:47:12,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 433 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 02:47:12,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:12,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 139 [2021-03-25 02:47:12,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:12,866 INFO L129 PetriNetUnfolder]: 44/132 cut-off events. [2021-03-25 02:47:12,866 INFO L130 PetriNetUnfolder]: For 563/583 co-relation queries the response was YES. [2021-03-25 02:47:12,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 132 events. 44/132 cut-off events. For 563/583 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 567 event pairs, 0 based on Foata normal form. 16/121 useless extension candidates. Maximal degree in co-relation 546. Up to 53 conditions per place. [2021-03-25 02:47:12,868 INFO L132 encePairwiseOnDemand]: 116/139 looper letters, 18 selfloop transitions, 28 changer transitions 0/55 dead transitions. [2021-03-25 02:47:12,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 564 flow [2021-03-25 02:47:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 02:47:12,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 02:47:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2021-03-25 02:47:12,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5899280575539568 [2021-03-25 02:47:12,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 574 transitions. [2021-03-25 02:47:12,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 574 transitions. [2021-03-25 02:47:12,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:12,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 574 transitions. [2021-03-25 02:47:12,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:12,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:12,873 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:12,873 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 433 flow. Second operand 7 states and 574 transitions. [2021-03-25 02:47:12,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 564 flow [2021-03-25 02:47:12,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 521 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-03-25 02:47:12,878 INFO L241 Difference]: Finished difference. Result has 55 places, 53 transitions, 497 flow [2021-03-25 02:47:12,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=497, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2021-03-25 02:47:12,878 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-25 02:47:12,878 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:12,878 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 53 transitions, 497 flow [2021-03-25 02:47:12,878 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 53 transitions, 497 flow [2021-03-25 02:47:12,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 497 flow [2021-03-25 02:47:12,885 INFO L129 PetriNetUnfolder]: 44/130 cut-off events. [2021-03-25 02:47:12,885 INFO L130 PetriNetUnfolder]: For 531/533 co-relation queries the response was YES. [2021-03-25 02:47:12,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 130 events. 44/130 cut-off events. For 531/533 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 557 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 501. Up to 47 conditions per place. [2021-03-25 02:47:12,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 304 [2021-03-25 02:47:12,908 INFO L154 LiptonReduction]: Checked pairs total: 22 [2021-03-25 02:47:12,908 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 02:47:12,908 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-25 02:47:12,908 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 497 flow [2021-03-25 02:47:12,908 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 02:47:12,908 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:12,908 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:12,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 02:47:12,909 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:12,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:12,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1117543052, now seen corresponding path program 1 times [2021-03-25 02:47:12,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:12,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996799710] [2021-03-25 02:47:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:12,946 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:12,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,950 INFO L142 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-03-25 02:47:12,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:12,956 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 02:47:12,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:12,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:12,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:12,970 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 02:47:12,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996799710] [2021-03-25 02:47:12,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386488506] [2021-03-25 02:47:12,970 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 02:47:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:13,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 02:47:13,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:13,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:13,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:13,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:13,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:13,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:13,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:13,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:13,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:13,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:13,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:13,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:13,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:13,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:13,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:13,081 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 02:47:13,083 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 02:47:13,084 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:13,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:13,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:13,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:13,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:13,098 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 02:47:13,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:13,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 02:47:13,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739324110] [2021-03-25 02:47:13,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 02:47:13,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:13,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 02:47:13,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 02:47:13,103 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 140 [2021-03-25 02:47:13,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 497 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 02:47:13,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:13,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 140 [2021-03-25 02:47:13,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:13,280 INFO L129 PetriNetUnfolder]: 52/156 cut-off events. [2021-03-25 02:47:13,280 INFO L130 PetriNetUnfolder]: For 841/871 co-relation queries the response was YES. [2021-03-25 02:47:13,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 156 events. 52/156 cut-off events. For 841/871 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 692 event pairs, 0 based on Foata normal form. 13/137 useless extension candidates. Maximal degree in co-relation 684. Up to 65 conditions per place. [2021-03-25 02:47:13,281 INFO L132 encePairwiseOnDemand]: 117/140 looper letters, 16 selfloop transitions, 43 changer transitions 0/68 dead transitions. [2021-03-25 02:47:13,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 781 flow [2021-03-25 02:47:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 02:47:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 02:47:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 901 transitions. [2021-03-25 02:47:13,284 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5850649350649351 [2021-03-25 02:47:13,284 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 901 transitions. [2021-03-25 02:47:13,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 901 transitions. [2021-03-25 02:47:13,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:13,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 901 transitions. [2021-03-25 02:47:13,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 81.9090909090909) internal successors, (901), 11 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:13,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 140.0) internal successors, (1680), 12 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:13,287 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 140.0) internal successors, (1680), 12 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:13,287 INFO L185 Difference]: Start difference. First operand has 55 places, 53 transitions, 497 flow. Second operand 11 states and 901 transitions. [2021-03-25 02:47:13,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 781 flow [2021-03-25 02:47:13,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 723 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-25 02:47:13,291 INFO L241 Difference]: Finished difference. Result has 61 places, 68 transitions, 735 flow [2021-03-25 02:47:13,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=735, PETRI_PLACES=61, PETRI_TRANSITIONS=68} [2021-03-25 02:47:13,291 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2021-03-25 02:47:13,291 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:13,291 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 68 transitions, 735 flow [2021-03-25 02:47:13,291 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 68 transitions, 735 flow [2021-03-25 02:47:13,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 68 transitions, 735 flow [2021-03-25 02:47:13,301 INFO L129 PetriNetUnfolder]: 52/154 cut-off events. [2021-03-25 02:47:13,301 INFO L130 PetriNetUnfolder]: For 761/767 co-relation queries the response was YES. [2021-03-25 02:47:13,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 154 events. 52/154 cut-off events. For 761/767 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 682 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 652. Up to 60 conditions per place. [2021-03-25 02:47:13,302 INFO L142 LiptonReduction]: Number of co-enabled transitions 398 [2021-03-25 02:47:13,479 INFO L154 LiptonReduction]: Checked pairs total: 246 [2021-03-25 02:47:13,479 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 02:47:13,480 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 189 [2021-03-25 02:47:13,480 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 68 transitions, 738 flow [2021-03-25 02:47:13,480 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 02:47:13,480 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:13,481 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:13,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:47:13,688 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:13,688 INFO L82 PathProgramCache]: Analyzing trace with hash -2070233080, now seen corresponding path program 1 times [2021-03-25 02:47:13,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:13,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654314916] [2021-03-25 02:47:13,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:13,717 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:13,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,723 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:13,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:13,728 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-25 02:47:13,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:13,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:13,738 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 02:47:13,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654314916] [2021-03-25 02:47:13,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:13,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:13,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520353157] [2021-03-25 02:47:13,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 02:47:13,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:13,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 02:47:13,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 02:47:13,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 148 [2021-03-25 02:47:13,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 738 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 02:47:13,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:13,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 148 [2021-03-25 02:47:13,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:13,874 INFO L129 PetriNetUnfolder]: 59/179 cut-off events. [2021-03-25 02:47:13,874 INFO L130 PetriNetUnfolder]: For 1150/1211 co-relation queries the response was YES. [2021-03-25 02:47:13,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 179 events. 59/179 cut-off events. For 1150/1211 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 898 event pairs, 0 based on Foata normal form. 20/161 useless extension candidates. Maximal degree in co-relation 866. Up to 73 conditions per place. [2021-03-25 02:47:13,876 INFO L132 encePairwiseOnDemand]: 113/148 looper letters, 18 selfloop transitions, 53 changer transitions 0/80 dead transitions. [2021-03-25 02:47:13,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 1056 flow [2021-03-25 02:47:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 02:47:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 02:47:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 747 transitions. [2021-03-25 02:47:13,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2021-03-25 02:47:13,878 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 747 transitions. [2021-03-25 02:47:13,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 747 transitions. [2021-03-25 02:47:13,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:13,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 747 transitions. [2021-03-25 02:47:13,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:13,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:13,881 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:13,881 INFO L185 Difference]: Start difference. First operand has 61 places, 68 transitions, 738 flow. Second operand 9 states and 747 transitions. [2021-03-25 02:47:13,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 1056 flow [2021-03-25 02:47:13,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 928 flow, removed 47 selfloop flow, removed 5 redundant places. [2021-03-25 02:47:13,885 INFO L241 Difference]: Finished difference. Result has 67 places, 77 transitions, 933 flow [2021-03-25 02:47:13,886 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=67, PETRI_TRANSITIONS=77} [2021-03-25 02:47:13,886 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2021-03-25 02:47:13,886 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:13,886 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 77 transitions, 933 flow [2021-03-25 02:47:13,886 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 77 transitions, 933 flow [2021-03-25 02:47:13,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 77 transitions, 933 flow [2021-03-25 02:47:13,898 INFO L129 PetriNetUnfolder]: 59/175 cut-off events. [2021-03-25 02:47:13,898 INFO L130 PetriNetUnfolder]: For 1178/1184 co-relation queries the response was YES. [2021-03-25 02:47:13,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 175 events. 59/175 cut-off events. For 1178/1184 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 860 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 841. Up to 67 conditions per place. [2021-03-25 02:47:13,899 INFO L142 LiptonReduction]: Number of co-enabled transitions 438 [2021-03-25 02:47:14,043 INFO L154 LiptonReduction]: Checked pairs total: 257 [2021-03-25 02:47:14,044 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 02:47:14,044 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 158 [2021-03-25 02:47:14,044 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 77 transitions, 938 flow [2021-03-25 02:47:14,044 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 02:47:14,044 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:14,044 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:14,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 02:47:14,045 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:14,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1621682125, now seen corresponding path program 1 times [2021-03-25 02:47:14,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:14,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049333203] [2021-03-25 02:47:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:14,072 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:14,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,076 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:14,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,082 INFO L142 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-03-25 02:47:14,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:14,091 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:14,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,096 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 02:47:14,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049333203] [2021-03-25 02:47:14,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:14,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:14,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440480893] [2021-03-25 02:47:14,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 02:47:14,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:14,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 02:47:14,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 02:47:14,098 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 155 [2021-03-25 02:47:14,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 938 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 02:47:14,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:14,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 155 [2021-03-25 02:47:14,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:14,208 INFO L129 PetriNetUnfolder]: 60/183 cut-off events. [2021-03-25 02:47:14,209 INFO L130 PetriNetUnfolder]: For 1385/1465 co-relation queries the response was YES. [2021-03-25 02:47:14,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 183 events. 60/183 cut-off events. For 1385/1465 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 926 event pairs, 0 based on Foata normal form. 22/166 useless extension candidates. Maximal degree in co-relation 974. Up to 72 conditions per place. [2021-03-25 02:47:14,210 INFO L132 encePairwiseOnDemand]: 123/155 looper letters, 34 selfloop transitions, 40 changer transitions 0/83 dead transitions. [2021-03-25 02:47:14,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 1165 flow [2021-03-25 02:47:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 02:47:14,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 02:47:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2021-03-25 02:47:14,211 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.543778801843318 [2021-03-25 02:47:14,211 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2021-03-25 02:47:14,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2021-03-25 02:47:14,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:14,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2021-03-25 02:47:14,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:14,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:14,216 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:14,216 INFO L185 Difference]: Start difference. First operand has 67 places, 77 transitions, 938 flow. Second operand 7 states and 590 transitions. [2021-03-25 02:47:14,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 1165 flow [2021-03-25 02:47:14,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 1092 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-25 02:47:14,223 INFO L241 Difference]: Finished difference. Result has 69 places, 78 transitions, 997 flow [2021-03-25 02:47:14,224 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=997, PETRI_PLACES=69, PETRI_TRANSITIONS=78} [2021-03-25 02:47:14,224 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2021-03-25 02:47:14,224 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:14,224 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 78 transitions, 997 flow [2021-03-25 02:47:14,224 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 78 transitions, 997 flow [2021-03-25 02:47:14,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 78 transitions, 997 flow [2021-03-25 02:47:14,237 INFO L129 PetriNetUnfolder]: 60/181 cut-off events. [2021-03-25 02:47:14,237 INFO L130 PetriNetUnfolder]: For 1378/1411 co-relation queries the response was YES. [2021-03-25 02:47:14,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 181 events. 60/181 cut-off events. For 1378/1411 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 896 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 900. Up to 67 conditions per place. [2021-03-25 02:47:14,238 INFO L142 LiptonReduction]: Number of co-enabled transitions 442 [2021-03-25 02:47:14,261 INFO L154 LiptonReduction]: Checked pairs total: 34 [2021-03-25 02:47:14,261 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 02:47:14,261 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 02:47:14,262 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 78 transitions, 997 flow [2021-03-25 02:47:14,262 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 02:47:14,262 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:14,262 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:14,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 02:47:14,262 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:14,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1862267236, now seen corresponding path program 1 times [2021-03-25 02:47:14,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:14,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609714791] [2021-03-25 02:47:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:14,282 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:14,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,286 INFO L142 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-03-25 02:47:14,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,291 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-25 02:47:14,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:14,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:14,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,305 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 02:47:14,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609714791] [2021-03-25 02:47:14,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096468834] [2021-03-25 02:47:14,305 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 02:47:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:14,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 02:47:14,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:14,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:14,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:14,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:14,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:14,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:14,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:14,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:14,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:14,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:14,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:14,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:14,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:14,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:14,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:14,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:14,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:14,413 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-25 02:47:14,414 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-25 02:47:14,414 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:14,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:14,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:14,427 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 02:47:14,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:14,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 02:47:14,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757773921] [2021-03-25 02:47:14,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 02:47:14,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:14,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 02:47:14,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-25 02:47:14,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2021-03-25 02:47:14,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 78 transitions, 997 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 02:47:14,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:14,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2021-03-25 02:47:14,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:14,631 INFO L129 PetriNetUnfolder]: 70/215 cut-off events. [2021-03-25 02:47:14,631 INFO L130 PetriNetUnfolder]: For 1945/2035 co-relation queries the response was YES. [2021-03-25 02:47:14,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 215 events. 70/215 cut-off events. For 1945/2035 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1123 event pairs, 0 based on Foata normal form. 17/186 useless extension candidates. Maximal degree in co-relation 1186. Up to 86 conditions per place. [2021-03-25 02:47:14,642 INFO L132 encePairwiseOnDemand]: 124/156 looper letters, 25 selfloop transitions, 62 changer transitions 0/96 dead transitions. [2021-03-25 02:47:14,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 1462 flow [2021-03-25 02:47:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 02:47:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 02:47:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 919 transitions. [2021-03-25 02:47:14,644 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5355477855477856 [2021-03-25 02:47:14,644 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 919 transitions. [2021-03-25 02:47:14,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 919 transitions. [2021-03-25 02:47:14,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:14,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 919 transitions. [2021-03-25 02:47:14,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.54545454545455) internal successors, (919), 11 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:14,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:14,647 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:14,647 INFO L185 Difference]: Start difference. First operand has 69 places, 78 transitions, 997 flow. Second operand 11 states and 919 transitions. [2021-03-25 02:47:14,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 1462 flow [2021-03-25 02:47:14,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 1382 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-25 02:47:14,656 INFO L241 Difference]: Finished difference. Result has 78 places, 96 transitions, 1390 flow [2021-03-25 02:47:14,656 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=78, PETRI_TRANSITIONS=96} [2021-03-25 02:47:14,656 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2021-03-25 02:47:14,656 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:14,656 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 96 transitions, 1390 flow [2021-03-25 02:47:14,656 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 96 transitions, 1390 flow [2021-03-25 02:47:14,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 96 transitions, 1390 flow [2021-03-25 02:47:14,671 INFO L129 PetriNetUnfolder]: 70/209 cut-off events. [2021-03-25 02:47:14,671 INFO L130 PetriNetUnfolder]: For 1724/1752 co-relation queries the response was YES. [2021-03-25 02:47:14,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 209 events. 70/209 cut-off events. For 1724/1752 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1061 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 1113. Up to 85 conditions per place. [2021-03-25 02:47:14,673 INFO L142 LiptonReduction]: Number of co-enabled transitions 550 [2021-03-25 02:47:14,848 INFO L154 LiptonReduction]: Checked pairs total: 408 [2021-03-25 02:47:14,848 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 02:47:14,848 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 192 [2021-03-25 02:47:14,848 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 1395 flow [2021-03-25 02:47:14,849 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 02:47:14,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:14,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:15,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:47:15,052 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash -755726762, now seen corresponding path program 1 times [2021-03-25 02:47:15,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:15,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40479766] [2021-03-25 02:47:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:15,069 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:15,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:15,073 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:15,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:15,077 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 02:47:15,078 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 02:47:15,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:15,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:15,094 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 02:47:15,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40479766] [2021-03-25 02:47:15,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:15,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:15,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918369814] [2021-03-25 02:47:15,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 02:47:15,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:15,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 02:47:15,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 02:47:15,096 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 165 [2021-03-25 02:47:15,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 1395 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 02:47:15,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:15,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 165 [2021-03-25 02:47:15,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:15,219 INFO L129 PetriNetUnfolder]: 71/217 cut-off events. [2021-03-25 02:47:15,220 INFO L130 PetriNetUnfolder]: For 2045/2187 co-relation queries the response was YES. [2021-03-25 02:47:15,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 217 events. 71/217 cut-off events. For 2045/2187 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1160 event pairs, 0 based on Foata normal form. 29/199 useless extension candidates. Maximal degree in co-relation 1268. Up to 88 conditions per place. [2021-03-25 02:47:15,221 INFO L132 encePairwiseOnDemand]: 129/165 looper letters, 41 selfloop transitions, 50 changer transitions 0/100 dead transitions. [2021-03-25 02:47:15,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 100 transitions, 1638 flow [2021-03-25 02:47:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 02:47:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 02:47:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2021-03-25 02:47:15,223 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5177489177489177 [2021-03-25 02:47:15,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2021-03-25 02:47:15,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2021-03-25 02:47:15,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:15,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2021-03-25 02:47:15,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,226 INFO L185 Difference]: Start difference. First operand has 78 places, 96 transitions, 1395 flow. Second operand 7 states and 598 transitions. [2021-03-25 02:47:15,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 100 transitions, 1638 flow [2021-03-25 02:47:15,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 100 transitions, 1514 flow, removed 49 selfloop flow, removed 3 redundant places. [2021-03-25 02:47:15,235 INFO L241 Difference]: Finished difference. Result has 82 places, 97 transitions, 1428 flow [2021-03-25 02:47:15,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1428, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2021-03-25 02:47:15,235 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2021-03-25 02:47:15,235 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:15,235 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 97 transitions, 1428 flow [2021-03-25 02:47:15,235 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 97 transitions, 1428 flow [2021-03-25 02:47:15,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 97 transitions, 1428 flow [2021-03-25 02:47:15,249 INFO L129 PetriNetUnfolder]: 71/215 cut-off events. [2021-03-25 02:47:15,249 INFO L130 PetriNetUnfolder]: For 1928/1957 co-relation queries the response was YES. [2021-03-25 02:47:15,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 215 events. 71/215 cut-off events. For 1928/1957 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1164 event pairs, 0 based on Foata normal form. 1/168 useless extension candidates. Maximal degree in co-relation 1169. Up to 82 conditions per place. [2021-03-25 02:47:15,251 INFO L142 LiptonReduction]: Number of co-enabled transitions 554 [2021-03-25 02:47:15,341 INFO L154 LiptonReduction]: Checked pairs total: 179 [2021-03-25 02:47:15,341 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 02:47:15,341 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 106 [2021-03-25 02:47:15,341 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 96 transitions, 1431 flow [2021-03-25 02:47:15,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:15,342 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:15,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 02:47:15,342 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:15,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:15,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1073290598, now seen corresponding path program 1 times [2021-03-25 02:47:15,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:15,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037022961] [2021-03-25 02:47:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:15,360 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:15,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:15,364 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:15,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:15,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-25 02:47:15,369 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 02:47:15,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:15,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:15,382 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 02:47:15,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037022961] [2021-03-25 02:47:15,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:15,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:15,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412683056] [2021-03-25 02:47:15,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 02:47:15,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 02:47:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 02:47:15,384 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 169 [2021-03-25 02:47:15,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 96 transitions, 1431 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 02:47:15,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:15,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 169 [2021-03-25 02:47:15,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:15,542 INFO L129 PetriNetUnfolder]: 76/237 cut-off events. [2021-03-25 02:47:15,543 INFO L130 PetriNetUnfolder]: For 2503/2669 co-relation queries the response was YES. [2021-03-25 02:47:15,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 237 events. 76/237 cut-off events. For 2503/2669 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1331 event pairs, 0 based on Foata normal form. 33/217 useless extension candidates. Maximal degree in co-relation 1427. Up to 94 conditions per place. [2021-03-25 02:47:15,545 INFO L132 encePairwiseOnDemand]: 115/169 looper letters, 13 selfloop transitions, 83 changer transitions 0/105 dead transitions. [2021-03-25 02:47:15,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 1801 flow [2021-03-25 02:47:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 02:47:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 02:47:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 767 transitions. [2021-03-25 02:47:15,547 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2021-03-25 02:47:15,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 767 transitions. [2021-03-25 02:47:15,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 767 transitions. [2021-03-25 02:47:15,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:15,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 767 transitions. [2021-03-25 02:47:15,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.22222222222223) internal successors, (767), 9 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,552 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 169.0) internal successors, (1690), 10 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,552 INFO L185 Difference]: Start difference. First operand has 82 places, 96 transitions, 1431 flow. Second operand 9 states and 767 transitions. [2021-03-25 02:47:15,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 1801 flow [2021-03-25 02:47:15,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 105 transitions, 1714 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-03-25 02:47:15,560 INFO L241 Difference]: Finished difference. Result has 87 places, 104 transitions, 1767 flow [2021-03-25 02:47:15,560 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1767, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2021-03-25 02:47:15,561 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2021-03-25 02:47:15,561 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:15,561 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 104 transitions, 1767 flow [2021-03-25 02:47:15,561 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 104 transitions, 1767 flow [2021-03-25 02:47:15,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 104 transitions, 1767 flow [2021-03-25 02:47:15,575 INFO L129 PetriNetUnfolder]: 76/235 cut-off events. [2021-03-25 02:47:15,575 INFO L130 PetriNetUnfolder]: For 2864/2942 co-relation queries the response was YES. [2021-03-25 02:47:15,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 235 events. 76/235 cut-off events. For 2864/2942 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1315 event pairs, 0 based on Foata normal form. 2/186 useless extension candidates. Maximal degree in co-relation 1437. Up to 94 conditions per place. [2021-03-25 02:47:15,578 INFO L142 LiptonReduction]: Number of co-enabled transitions 580 [2021-03-25 02:47:15,672 INFO L154 LiptonReduction]: Checked pairs total: 272 [2021-03-25 02:47:15,673 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 02:47:15,673 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 112 [2021-03-25 02:47:15,673 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 1767 flow [2021-03-25 02:47:15,673 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 02:47:15,673 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:15,673 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:15,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 02:47:15,674 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:15,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1972849706, now seen corresponding path program 1 times [2021-03-25 02:47:15,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:15,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415282606] [2021-03-25 02:47:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:15,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:15,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:47:15,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:15,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:47:15,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:15,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:47:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:47:15,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415282606] [2021-03-25 02:47:15,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:15,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 02:47:15,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681324509] [2021-03-25 02:47:15,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 02:47:15,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:15,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 02:47:15,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 02:47:15,685 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 174 [2021-03-25 02:47:15,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 1767 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:15,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 174 [2021-03-25 02:47:15,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:15,727 INFO L129 PetriNetUnfolder]: 69/221 cut-off events. [2021-03-25 02:47:15,727 INFO L130 PetriNetUnfolder]: For 2613/2680 co-relation queries the response was YES. [2021-03-25 02:47:15,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 221 events. 69/221 cut-off events. For 2613/2680 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1215 event pairs, 0 based on Foata normal form. 9/182 useless extension candidates. Maximal degree in co-relation 1446. Up to 121 conditions per place. [2021-03-25 02:47:15,729 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 25 selfloop transitions, 11 changer transitions 0/103 dead transitions. [2021-03-25 02:47:15,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 1834 flow [2021-03-25 02:47:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 02:47:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 02:47:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2021-03-25 02:47:15,731 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7758620689655172 [2021-03-25 02:47:15,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2021-03-25 02:47:15,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2021-03-25 02:47:15,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:15,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2021-03-25 02:47:15,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:15,732 INFO L185 Difference]: Start difference. First operand has 87 places, 104 transitions, 1767 flow. Second operand 3 states and 405 transitions. [2021-03-25 02:47:15,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 1834 flow [2021-03-25 02:47:15,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 103 transitions, 1703 flow, removed 25 selfloop flow, removed 7 redundant places. [2021-03-25 02:47:15,744 INFO L241 Difference]: Finished difference. Result has 82 places, 102 transitions, 1666 flow [2021-03-25 02:47:15,744 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1666, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2021-03-25 02:47:15,744 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2021-03-25 02:47:15,745 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:15,745 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 102 transitions, 1666 flow [2021-03-25 02:47:15,745 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 102 transitions, 1666 flow [2021-03-25 02:47:15,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 102 transitions, 1666 flow [2021-03-25 02:47:15,758 INFO L129 PetriNetUnfolder]: 69/219 cut-off events. [2021-03-25 02:47:15,759 INFO L130 PetriNetUnfolder]: For 2246/2260 co-relation queries the response was YES. [2021-03-25 02:47:15,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 219 events. 69/219 cut-off events. For 2246/2260 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1223 event pairs, 0 based on Foata normal form. 6/210 useless extension candidates. Maximal degree in co-relation 1315. Up to 83 conditions per place. [2021-03-25 02:47:15,761 INFO L142 LiptonReduction]: Number of co-enabled transitions 536 [2021-03-25 02:47:16,069 INFO L154 LiptonReduction]: Checked pairs total: 128 [2021-03-25 02:47:16,070 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 02:47:16,070 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 325 [2021-03-25 02:47:16,070 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 1674 flow [2021-03-25 02:47:16,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,070 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:16,070 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:16,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 02:47:16,070 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:16,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:16,071 INFO L82 PathProgramCache]: Analyzing trace with hash -470623955, now seen corresponding path program 1 times [2021-03-25 02:47:16,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:16,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893227613] [2021-03-25 02:47:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:16,095 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:16,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,099 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:16,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:16,103 INFO L142 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-03-25 02:47:16,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:16,113 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:16,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,118 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 02:47:16,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893227613] [2021-03-25 02:47:16,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:16,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:16,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788484969] [2021-03-25 02:47:16,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 02:47:16,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:16,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 02:47:16,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 02:47:16,120 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 182 [2021-03-25 02:47:16,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 1674 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 02:47:16,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:16,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 182 [2021-03-25 02:47:16,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:16,250 INFO L129 PetriNetUnfolder]: 70/223 cut-off events. [2021-03-25 02:47:16,250 INFO L130 PetriNetUnfolder]: For 2670/2790 co-relation queries the response was YES. [2021-03-25 02:47:16,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 223 events. 70/223 cut-off events. For 2670/2790 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1207 event pairs, 0 based on Foata normal form. 32/239 useless extension candidates. Maximal degree in co-relation 1466. Up to 85 conditions per place. [2021-03-25 02:47:16,252 INFO L132 encePairwiseOnDemand]: 140/182 looper letters, 39 selfloop transitions, 59 changer transitions 0/107 dead transitions. [2021-03-25 02:47:16,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 107 transitions, 1964 flow [2021-03-25 02:47:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 02:47:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 02:47:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2021-03-25 02:47:16,253 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4740973312401884 [2021-03-25 02:47:16,253 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2021-03-25 02:47:16,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2021-03-25 02:47:16,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:16,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2021-03-25 02:47:16,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,256 INFO L185 Difference]: Start difference. First operand has 82 places, 102 transitions, 1674 flow. Second operand 7 states and 604 transitions. [2021-03-25 02:47:16,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 107 transitions, 1964 flow [2021-03-25 02:47:16,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 107 transitions, 1928 flow, removed 16 selfloop flow, removed 1 redundant places. [2021-03-25 02:47:16,265 INFO L241 Difference]: Finished difference. Result has 88 places, 103 transitions, 1823 flow [2021-03-25 02:47:16,266 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1823, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2021-03-25 02:47:16,266 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2021-03-25 02:47:16,266 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:16,266 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 103 transitions, 1823 flow [2021-03-25 02:47:16,266 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 103 transitions, 1823 flow [2021-03-25 02:47:16,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 103 transitions, 1823 flow [2021-03-25 02:47:16,279 INFO L129 PetriNetUnfolder]: 70/223 cut-off events. [2021-03-25 02:47:16,280 INFO L130 PetriNetUnfolder]: For 2741/2817 co-relation queries the response was YES. [2021-03-25 02:47:16,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 223 events. 70/223 cut-off events. For 2741/2817 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1254 event pairs, 0 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 1412. Up to 85 conditions per place. [2021-03-25 02:47:16,282 INFO L142 LiptonReduction]: Number of co-enabled transitions 540 [2021-03-25 02:47:16,306 INFO L154 LiptonReduction]: Checked pairs total: 45 [2021-03-25 02:47:16,306 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 02:47:16,306 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-25 02:47:16,309 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 1823 flow [2021-03-25 02:47:16,309 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 02:47:16,309 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:16,309 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:16,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 02:47:16,310 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:16,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:16,310 INFO L82 PathProgramCache]: Analyzing trace with hash 311530481, now seen corresponding path program 1 times [2021-03-25 02:47:16,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:16,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694039156] [2021-03-25 02:47:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:16,331 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:16,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,335 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:16,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:16,341 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:16,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,346 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:16,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,351 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 02:47:16,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694039156] [2021-03-25 02:47:16,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:16,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:16,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475196286] [2021-03-25 02:47:16,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 02:47:16,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 02:47:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 02:47:16,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2021-03-25 02:47:16,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 1823 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 02:47:16,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:16,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2021-03-25 02:47:16,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:16,506 INFO L129 PetriNetUnfolder]: 75/238 cut-off events. [2021-03-25 02:47:16,506 INFO L130 PetriNetUnfolder]: For 3434/3700 co-relation queries the response was YES. [2021-03-25 02:47:16,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 238 events. 75/238 cut-off events. For 3434/3700 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1348 event pairs, 0 based on Foata normal form. 33/255 useless extension candidates. Maximal degree in co-relation 1658. Up to 94 conditions per place. [2021-03-25 02:47:16,508 INFO L132 encePairwiseOnDemand]: 125/183 looper letters, 13 selfloop transitions, 89 changer transitions 0/111 dead transitions. [2021-03-25 02:47:16,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 111 transitions, 2210 flow [2021-03-25 02:47:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 02:47:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 02:47:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 772 transitions. [2021-03-25 02:47:16,509 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.46873102610807527 [2021-03-25 02:47:16,509 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 772 transitions. [2021-03-25 02:47:16,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 772 transitions. [2021-03-25 02:47:16,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:16,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 772 transitions. [2021-03-25 02:47:16,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.77777777777777) internal successors, (772), 9 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,512 INFO L185 Difference]: Start difference. First operand has 88 places, 103 transitions, 1823 flow. Second operand 9 states and 772 transitions. [2021-03-25 02:47:16,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 111 transitions, 2210 flow [2021-03-25 02:47:16,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 111 transitions, 2142 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-25 02:47:16,522 INFO L241 Difference]: Finished difference. Result has 95 places, 110 transitions, 2194 flow [2021-03-25 02:47:16,522 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2194, PETRI_PLACES=95, PETRI_TRANSITIONS=110} [2021-03-25 02:47:16,522 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2021-03-25 02:47:16,522 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:16,522 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 110 transitions, 2194 flow [2021-03-25 02:47:16,523 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 110 transitions, 2194 flow [2021-03-25 02:47:16,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 110 transitions, 2194 flow [2021-03-25 02:47:16,537 INFO L129 PetriNetUnfolder]: 75/238 cut-off events. [2021-03-25 02:47:16,537 INFO L130 PetriNetUnfolder]: For 3660/3733 co-relation queries the response was YES. [2021-03-25 02:47:16,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1713 conditions, 238 events. 75/238 cut-off events. For 3660/3733 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1368 event pairs, 0 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 1675. Up to 94 conditions per place. [2021-03-25 02:47:16,540 INFO L142 LiptonReduction]: Number of co-enabled transitions 572 [2021-03-25 02:47:16,609 INFO L154 LiptonReduction]: Checked pairs total: 216 [2021-03-25 02:47:16,609 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 02:47:16,609 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 87 [2021-03-25 02:47:16,609 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 110 transitions, 2194 flow [2021-03-25 02:47:16,609 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 02:47:16,610 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:16,610 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:16,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 02:47:16,610 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:16,610 INFO L82 PathProgramCache]: Analyzing trace with hash 309850653, now seen corresponding path program 1 times [2021-03-25 02:47:16,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:16,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010882150] [2021-03-25 02:47:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:16,621 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:16,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,625 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 02:47:16,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:16,630 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:16,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,635 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:16,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,640 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 02:47:16,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010882150] [2021-03-25 02:47:16,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:16,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 02:47:16,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788378265] [2021-03-25 02:47:16,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 02:47:16,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:16,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 02:47:16,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 02:47:16,641 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2021-03-25 02:47:16,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 110 transitions, 2194 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 02:47:16,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:16,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2021-03-25 02:47:16,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:16,784 INFO L129 PetriNetUnfolder]: 81/259 cut-off events. [2021-03-25 02:47:16,784 INFO L130 PetriNetUnfolder]: For 4736/5253 co-relation queries the response was YES. [2021-03-25 02:47:16,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2015 conditions, 259 events. 81/259 cut-off events. For 4736/5253 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1469 event pairs, 0 based on Foata normal form. 28/270 useless extension candidates. Maximal degree in co-relation 1975. Up to 103 conditions per place. [2021-03-25 02:47:16,786 INFO L132 encePairwiseOnDemand]: 144/187 looper letters, 44 selfloop transitions, 66 changer transitions 0/119 dead transitions. [2021-03-25 02:47:16,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 119 transitions, 2636 flow [2021-03-25 02:47:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 02:47:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 02:47:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 773 transitions. [2021-03-25 02:47:16,788 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4592988710635769 [2021-03-25 02:47:16,788 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 773 transitions. [2021-03-25 02:47:16,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 773 transitions. [2021-03-25 02:47:16,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:16,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 773 transitions. [2021-03-25 02:47:16,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,790 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:16,790 INFO L185 Difference]: Start difference. First operand has 95 places, 110 transitions, 2194 flow. Second operand 9 states and 773 transitions. [2021-03-25 02:47:16,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 119 transitions, 2636 flow [2021-03-25 02:47:16,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 119 transitions, 2528 flow, removed 31 selfloop flow, removed 4 redundant places. [2021-03-25 02:47:16,805 INFO L241 Difference]: Finished difference. Result has 102 places, 118 transitions, 2496 flow [2021-03-25 02:47:16,806 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2496, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2021-03-25 02:47:16,806 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2021-03-25 02:47:16,806 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:16,806 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 118 transitions, 2496 flow [2021-03-25 02:47:16,806 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 118 transitions, 2496 flow [2021-03-25 02:47:16,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 118 transitions, 2496 flow [2021-03-25 02:47:16,823 INFO L129 PetriNetUnfolder]: 81/257 cut-off events. [2021-03-25 02:47:16,823 INFO L130 PetriNetUnfolder]: For 4799/4888 co-relation queries the response was YES. [2021-03-25 02:47:16,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 257 events. 81/257 cut-off events. For 4799/4888 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1472 event pairs, 0 based on Foata normal form. 5/245 useless extension candidates. Maximal degree in co-relation 1935. Up to 100 conditions per place. [2021-03-25 02:47:16,826 INFO L142 LiptonReduction]: Number of co-enabled transitions 608 [2021-03-25 02:47:16,953 INFO L154 LiptonReduction]: Checked pairs total: 325 [2021-03-25 02:47:16,953 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 02:47:16,954 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 148 [2021-03-25 02:47:16,954 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 2496 flow [2021-03-25 02:47:16,954 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 02:47:16,954 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:16,954 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:16,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 02:47:16,954 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:16,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:16,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1834940807, now seen corresponding path program 1 times [2021-03-25 02:47:16,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:16,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265899583] [2021-03-25 02:47:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:16,972 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:16,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:16,976 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:16,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:16,981 INFO L142 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-03-25 02:47:16,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:16,990 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-25 02:47:16,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:16,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:16,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,002 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 02:47:17,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265899583] [2021-03-25 02:47:17,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036325140] [2021-03-25 02:47:17,003 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 02:47:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:17,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 02:47:17,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:17,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:17,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:17,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:17,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:17,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:17,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:17,071 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 02:47:17,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 02:47:17,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 02:47:17,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:17,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:17,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:17,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:17,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:17,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:17,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:17,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:17,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:17,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:17,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,098 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 02:47:17,099 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 02:47:17,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:17,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:17,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 02:47:17,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:17,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:17,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 02:47:17,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:17,124 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 02:47:17,125 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 02:47:17,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:17,138 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 02:47:17,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:17,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 02:47:17,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628931203] [2021-03-25 02:47:17,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 02:47:17,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:17,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 02:47:17,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-03-25 02:47:17,140 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 193 [2021-03-25 02:47:17,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 2496 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 02:47:17,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:17,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 193 [2021-03-25 02:47:17,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:17,423 INFO L129 PetriNetUnfolder]: 84/269 cut-off events. [2021-03-25 02:47:17,424 INFO L130 PetriNetUnfolder]: For 5536/5695 co-relation queries the response was YES. [2021-03-25 02:47:17,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 269 events. 84/269 cut-off events. For 5536/5695 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1600 event pairs, 0 based on Foata normal form. 28/279 useless extension candidates. Maximal degree in co-relation 2161. Up to 106 conditions per place. [2021-03-25 02:47:17,426 INFO L132 encePairwiseOnDemand]: 144/193 looper letters, 46 selfloop transitions, 73 changer transitions 0/128 dead transitions. [2021-03-25 02:47:17,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 128 transitions, 2967 flow [2021-03-25 02:47:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 02:47:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 02:47:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 857 transitions. [2021-03-25 02:47:17,428 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4440414507772021 [2021-03-25 02:47:17,428 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 857 transitions. [2021-03-25 02:47:17,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 857 transitions. [2021-03-25 02:47:17,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:17,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 857 transitions. [2021-03-25 02:47:17,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.7) internal successors, (857), 10 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:17,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 193.0) internal successors, (2123), 11 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:17,431 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 193.0) internal successors, (2123), 11 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:17,431 INFO L185 Difference]: Start difference. First operand has 102 places, 118 transitions, 2496 flow. Second operand 10 states and 857 transitions. [2021-03-25 02:47:17,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 128 transitions, 2967 flow [2021-03-25 02:47:17,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 128 transitions, 2899 flow, removed 26 selfloop flow, removed 3 redundant places. [2021-03-25 02:47:17,449 INFO L241 Difference]: Finished difference. Result has 110 places, 125 transitions, 2804 flow [2021-03-25 02:47:17,449 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2804, PETRI_PLACES=110, PETRI_TRANSITIONS=125} [2021-03-25 02:47:17,449 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2021-03-25 02:47:17,449 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:17,449 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 125 transitions, 2804 flow [2021-03-25 02:47:17,450 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 125 transitions, 2804 flow [2021-03-25 02:47:17,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 125 transitions, 2804 flow [2021-03-25 02:47:17,467 INFO L129 PetriNetUnfolder]: 84/269 cut-off events. [2021-03-25 02:47:17,468 INFO L130 PetriNetUnfolder]: For 5258/5398 co-relation queries the response was YES. [2021-03-25 02:47:17,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2139 conditions, 269 events. 84/269 cut-off events. For 5258/5398 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1612 event pairs, 0 based on Foata normal form. 5/255 useless extension candidates. Maximal degree in co-relation 2094. Up to 106 conditions per place. [2021-03-25 02:47:17,471 INFO L142 LiptonReduction]: Number of co-enabled transitions 640 [2021-03-25 02:47:17,534 INFO L154 LiptonReduction]: Checked pairs total: 59 [2021-03-25 02:47:17,534 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 02:47:17,534 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 85 [2021-03-25 02:47:17,535 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 125 transitions, 2808 flow [2021-03-25 02:47:17,535 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 02:47:17,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:17,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:17,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-03-25 02:47:17,754 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:17,754 INFO L82 PathProgramCache]: Analyzing trace with hash 922098050, now seen corresponding path program 1 times [2021-03-25 02:47:17,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:17,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079666901] [2021-03-25 02:47:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:17,766 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:17,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,770 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 02:47:17,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:17,775 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 02:47:17,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:17,780 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:17,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,786 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:17,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:17,791 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 02:47:17,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079666901] [2021-03-25 02:47:17,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:17,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 02:47:17,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529729915] [2021-03-25 02:47:17,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 02:47:17,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:17,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 02:47:17,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-25 02:47:17,793 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 195 [2021-03-25 02:47:17,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 125 transitions, 2808 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 02:47:17,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:17,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 195 [2021-03-25 02:47:17,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:18,020 INFO L129 PetriNetUnfolder]: 100/323 cut-off events. [2021-03-25 02:47:18,020 INFO L130 PetriNetUnfolder]: For 8023/8600 co-relation queries the response was YES. [2021-03-25 02:47:18,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2781 conditions, 323 events. 100/323 cut-off events. For 8023/8600 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1980 event pairs, 0 based on Foata normal form. 43/345 useless extension candidates. Maximal degree in co-relation 2734. Up to 132 conditions per place. [2021-03-25 02:47:18,023 INFO L132 encePairwiseOnDemand]: 132/195 looper letters, 31 selfloop transitions, 112 changer transitions 0/152 dead transitions. [2021-03-25 02:47:18,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 152 transitions, 3758 flow [2021-03-25 02:47:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 02:47:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 02:47:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 954 transitions. [2021-03-25 02:47:18,025 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.44475524475524475 [2021-03-25 02:47:18,025 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 954 transitions. [2021-03-25 02:47:18,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 954 transitions. [2021-03-25 02:47:18,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:18,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 954 transitions. [2021-03-25 02:47:18,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 86.72727272727273) internal successors, (954), 11 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:18,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:18,028 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:18,028 INFO L185 Difference]: Start difference. First operand has 110 places, 125 transitions, 2808 flow. Second operand 11 states and 954 transitions. [2021-03-25 02:47:18,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 152 transitions, 3758 flow [2021-03-25 02:47:18,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 152 transitions, 3594 flow, removed 42 selfloop flow, removed 5 redundant places. [2021-03-25 02:47:18,049 INFO L241 Difference]: Finished difference. Result has 120 places, 152 transitions, 3696 flow [2021-03-25 02:47:18,049 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2656, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3696, PETRI_PLACES=120, PETRI_TRANSITIONS=152} [2021-03-25 02:47:18,049 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2021-03-25 02:47:18,049 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:18,049 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 152 transitions, 3696 flow [2021-03-25 02:47:18,049 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 152 transitions, 3696 flow [2021-03-25 02:47:18,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 152 transitions, 3696 flow [2021-03-25 02:47:18,072 INFO L129 PetriNetUnfolder]: 100/325 cut-off events. [2021-03-25 02:47:18,073 INFO L130 PetriNetUnfolder]: For 8017/8126 co-relation queries the response was YES. [2021-03-25 02:47:18,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 325 events. 100/325 cut-off events. For 8017/8126 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2023 event pairs, 0 based on Foata normal form. 5/310 useless extension candidates. Maximal degree in co-relation 2719. Up to 124 conditions per place. [2021-03-25 02:47:18,076 INFO L142 LiptonReduction]: Number of co-enabled transitions 760 [2021-03-25 02:47:18,267 INFO L154 LiptonReduction]: Checked pairs total: 884 [2021-03-25 02:47:18,267 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-25 02:47:18,267 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 218 [2021-03-25 02:47:18,267 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 152 transitions, 3738 flow [2021-03-25 02:47:18,268 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 02:47:18,268 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:18,268 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:18,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 02:47:18,268 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:18,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1064379245, now seen corresponding path program 1 times [2021-03-25 02:47:18,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:18,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768757781] [2021-03-25 02:47:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:18,279 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:18,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,294 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:18,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:18,299 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 02:47:18,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:18,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-25 02:47:18,305 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 02:47:18,314 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-25 02:47:18,314 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-25 02:47:18,334 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 02:47:18,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768757781] [2021-03-25 02:47:18,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549885124] [2021-03-25 02:47:18,335 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 02:47:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:18,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 02:47:18,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:18,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:18,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:18,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:18,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:18,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:18,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:18,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:18,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:18,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:18,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:18,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:18,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,412 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 02:47:18,413 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 02:47:18,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:18,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:18,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 02:47:18,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:18,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 02:47:18,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:18,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:18,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 02:47:18,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 02:47:18,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 02:47:18,443 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-25 02:47:18,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,448 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-25 02:47:18,448 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,452 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-25 02:47:18,453 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-25 02:47:18,454 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-25 02:47:18,455 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:18,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:18,456 INFO L142 QuantifierPusher]: treesize reduction -4, result has 105.7 percent of original size [2021-03-25 02:47:18,492 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:18,498 INFO L147 QuantifierPusher]: treesize reduction 17, result has 99.4 percent of original size 2624 [2021-03-25 02:47:18,504 INFO L147 QuantifierPusher]: treesize reduction 17, result has 99.4 percent of original size 2624 [2021-03-25 02:47:18,510 INFO L142 QuantifierPusher]: treesize reduction 17, result has 99.4 percent of original size [2021-03-25 02:47:18,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2624 [2021-03-25 02:47:18,700 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 27 [2021-03-25 02:47:18,701 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 02:47:18,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:18,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 02:47:18,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018576588] [2021-03-25 02:47:18,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 02:47:18,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:18,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 02:47:18,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-03-25 02:47:18,703 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 206 [2021-03-25 02:47:18,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 152 transitions, 3738 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 02:47:18,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:18,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 206 [2021-03-25 02:47:18,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:19,316 INFO L129 PetriNetUnfolder]: 115/385 cut-off events. [2021-03-25 02:47:19,316 INFO L130 PetriNetUnfolder]: For 13120/13453 co-relation queries the response was YES. [2021-03-25 02:47:19,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 385 events. 115/385 cut-off events. For 13120/13453 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2542 event pairs, 0 based on Foata normal form. 54/410 useless extension candidates. Maximal degree in co-relation 3456. Up to 154 conditions per place. [2021-03-25 02:47:19,321 INFO L132 encePairwiseOnDemand]: 125/206 looper letters, 15 selfloop transitions, 157 changer transitions 0/181 dead transitions. [2021-03-25 02:47:19,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 181 transitions, 4868 flow [2021-03-25 02:47:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-25 02:47:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-25 02:47:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1524 transitions. [2021-03-25 02:47:19,323 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4110032362459547 [2021-03-25 02:47:19,323 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1524 transitions. [2021-03-25 02:47:19,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1524 transitions. [2021-03-25 02:47:19,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:19,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1524 transitions. [2021-03-25 02:47:19,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 84.66666666666667) internal successors, (1524), 18 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:19,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:19,327 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:19,327 INFO L185 Difference]: Start difference. First operand has 120 places, 152 transitions, 3738 flow. Second operand 18 states and 1524 transitions. [2021-03-25 02:47:19,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 181 transitions, 4868 flow [2021-03-25 02:47:19,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 181 transitions, 4628 flow, removed 110 selfloop flow, removed 2 redundant places. [2021-03-25 02:47:19,353 INFO L241 Difference]: Finished difference. Result has 142 places, 179 transitions, 4758 flow [2021-03-25 02:47:19,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3556, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4758, PETRI_PLACES=142, PETRI_TRANSITIONS=179} [2021-03-25 02:47:19,353 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2021-03-25 02:47:19,353 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:19,353 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 179 transitions, 4758 flow [2021-03-25 02:47:19,354 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 179 transitions, 4758 flow [2021-03-25 02:47:19,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 179 transitions, 4758 flow [2021-03-25 02:47:19,384 INFO L129 PetriNetUnfolder]: 115/385 cut-off events. [2021-03-25 02:47:19,384 INFO L130 PetriNetUnfolder]: For 9729/9837 co-relation queries the response was YES. [2021-03-25 02:47:19,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 385 events. 115/385 cut-off events. For 9729/9837 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2553 event pairs, 0 based on Foata normal form. 11/366 useless extension candidates. Maximal degree in co-relation 3322. Up to 148 conditions per place. [2021-03-25 02:47:19,389 INFO L142 LiptonReduction]: Number of co-enabled transitions 870 [2021-03-25 02:47:19,788 INFO L154 LiptonReduction]: Checked pairs total: 1085 [2021-03-25 02:47:19,788 INFO L156 LiptonReduction]: Total number of compositions: 16 [2021-03-25 02:47:19,788 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 435 [2021-03-25 02:47:19,789 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 178 transitions, 4760 flow [2021-03-25 02:47:19,789 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 02:47:19,789 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:19,789 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:19,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:47:19,992 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:19,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1860987079, now seen corresponding path program 1 times [2021-03-25 02:47:19,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:19,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423401424] [2021-03-25 02:47:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:20,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:47:20,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 02:47:20,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 02:47:20,008 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 02:47:20,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423401424] [2021-03-25 02:47:20,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:20,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 02:47:20,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304533821] [2021-03-25 02:47:20,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 02:47:20,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:20,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 02:47:20,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 02:47:20,010 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 222 [2021-03-25 02:47:20,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 178 transitions, 4760 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:20,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 222 [2021-03-25 02:47:20,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:20,090 INFO L129 PetriNetUnfolder]: 109/374 cut-off events. [2021-03-25 02:47:20,090 INFO L130 PetriNetUnfolder]: For 10700/10874 co-relation queries the response was YES. [2021-03-25 02:47:20,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3507 conditions, 374 events. 109/374 cut-off events. For 10700/10874 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2522 event pairs, 0 based on Foata normal form. 29/370 useless extension candidates. Maximal degree in co-relation 3447. Up to 144 conditions per place. [2021-03-25 02:47:20,095 INFO L132 encePairwiseOnDemand]: 217/222 looper letters, 60 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2021-03-25 02:47:20,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 169 transitions, 4619 flow [2021-03-25 02:47:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 02:47:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 02:47:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2021-03-25 02:47:20,096 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7057057057057057 [2021-03-25 02:47:20,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2021-03-25 02:47:20,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2021-03-25 02:47:20,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:20,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2021-03-25 02:47:20,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,098 INFO L185 Difference]: Start difference. First operand has 141 places, 178 transitions, 4760 flow. Second operand 3 states and 470 transitions. [2021-03-25 02:47:20,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 169 transitions, 4619 flow [2021-03-25 02:47:20,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 169 transitions, 3625 flow, removed 350 selfloop flow, removed 15 redundant places. [2021-03-25 02:47:20,134 INFO L241 Difference]: Finished difference. Result has 130 places, 169 transitions, 3513 flow [2021-03-25 02:47:20,134 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=3499, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3513, PETRI_PLACES=130, PETRI_TRANSITIONS=169} [2021-03-25 02:47:20,134 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2021-03-25 02:47:20,134 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:20,134 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 169 transitions, 3513 flow [2021-03-25 02:47:20,135 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 169 transitions, 3513 flow [2021-03-25 02:47:20,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 130 places, 169 transitions, 3513 flow [2021-03-25 02:47:20,160 INFO L129 PetriNetUnfolder]: 109/374 cut-off events. [2021-03-25 02:47:20,160 INFO L130 PetriNetUnfolder]: For 5128/5231 co-relation queries the response was YES. [2021-03-25 02:47:20,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 374 events. 109/374 cut-off events. For 5128/5231 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2565 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 2667. Up to 108 conditions per place. [2021-03-25 02:47:20,164 INFO L142 LiptonReduction]: Number of co-enabled transitions 770 [2021-03-25 02:47:20,263 INFO L154 LiptonReduction]: Checked pairs total: 332 [2021-03-25 02:47:20,263 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 02:47:20,263 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 129 [2021-03-25 02:47:20,264 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 169 transitions, 3517 flow [2021-03-25 02:47:20,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,264 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:20,264 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:20,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 02:47:20,265 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1860987141, now seen corresponding path program 1 times [2021-03-25 02:47:20,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:20,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174447447] [2021-03-25 02:47:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:20,280 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:20,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,284 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:20,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,288 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 02:47:20,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:20,294 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:20,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,299 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 02:47:20,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174447447] [2021-03-25 02:47:20,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349746930] [2021-03-25 02:47:20,300 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 02:47:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:20,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 02:47:20,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:20,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:20,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:20,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:20,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:20,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:20,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:20,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:20,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:20,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:20,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:20,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:20,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,376 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 02:47:20,376 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 02:47:20,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:20,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:20,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 02:47:20,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:20,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:20,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 02:47:20,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:20,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:20,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:20,397 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 02:47:20,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:20,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 02:47:20,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312080506] [2021-03-25 02:47:20,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 02:47:20,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:20,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 02:47:20,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-25 02:47:20,398 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 226 [2021-03-25 02:47:20,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 169 transitions, 3517 flow. Second operand has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:20,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 226 [2021-03-25 02:47:20,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:20,759 INFO L129 PetriNetUnfolder]: 123/426 cut-off events. [2021-03-25 02:47:20,759 INFO L130 PetriNetUnfolder]: For 7563/7719 co-relation queries the response was YES. [2021-03-25 02:47:20,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 426 events. 123/426 cut-off events. For 7563/7719 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2968 event pairs, 0 based on Foata normal form. 18/405 useless extension candidates. Maximal degree in co-relation 3318. Up to 141 conditions per place. [2021-03-25 02:47:20,763 INFO L132 encePairwiseOnDemand]: 145/226 looper letters, 52 selfloop transitions, 123 changer transitions 0/184 dead transitions. [2021-03-25 02:47:20,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 184 transitions, 4220 flow [2021-03-25 02:47:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 02:47:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 02:47:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 884 transitions. [2021-03-25 02:47:20,764 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.43461160275319566 [2021-03-25 02:47:20,764 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 884 transitions. [2021-03-25 02:47:20,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 884 transitions. [2021-03-25 02:47:20,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:20,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 884 transitions. [2021-03-25 02:47:20,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.22222222222223) internal successors, (884), 9 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,767 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,767 INFO L185 Difference]: Start difference. First operand has 130 places, 169 transitions, 3517 flow. Second operand 9 states and 884 transitions. [2021-03-25 02:47:20,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 184 transitions, 4220 flow [2021-03-25 02:47:20,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 184 transitions, 4218 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 02:47:20,792 INFO L241 Difference]: Finished difference. Result has 139 places, 182 transitions, 4133 flow [2021-03-25 02:47:20,793 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4133, PETRI_PLACES=139, PETRI_TRANSITIONS=182} [2021-03-25 02:47:20,793 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2021-03-25 02:47:20,793 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:20,793 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 182 transitions, 4133 flow [2021-03-25 02:47:20,793 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 182 transitions, 4133 flow [2021-03-25 02:47:20,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 182 transitions, 4133 flow [2021-03-25 02:47:20,824 INFO L129 PetriNetUnfolder]: 123/426 cut-off events. [2021-03-25 02:47:20,824 INFO L130 PetriNetUnfolder]: For 7528/7650 co-relation queries the response was YES. [2021-03-25 02:47:20,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 426 events. 123/426 cut-off events. For 7528/7650 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2981 event pairs, 1 based on Foata normal form. 3/331 useless extension candidates. Maximal degree in co-relation 3337. Up to 131 conditions per place. [2021-03-25 02:47:20,828 INFO L142 LiptonReduction]: Number of co-enabled transitions 820 [2021-03-25 02:47:20,973 INFO L154 LiptonReduction]: Checked pairs total: 550 [2021-03-25 02:47:20,973 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 02:47:20,973 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 180 [2021-03-25 02:47:20,973 INFO L480 AbstractCegarLoop]: Abstraction has has 139 places, 182 transitions, 4153 flow [2021-03-25 02:47:20,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:20,974 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:20,974 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:21,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-03-25 02:47:21,177 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash 397705893, now seen corresponding path program 1 times [2021-03-25 02:47:21,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:21,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777055967] [2021-03-25 02:47:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:21,194 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:21,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,198 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 02:47:21,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:21,203 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-25 02:47:21,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:21,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:21,214 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:21,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,234 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 02:47:21,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777055967] [2021-03-25 02:47:21,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926749126] [2021-03-25 02:47:21,234 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 02:47:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:21,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 02:47:21,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:21,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:21,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:21,301 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 02:47:21,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:21,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:21,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:21,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:21,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:21,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:21,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:21,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:21,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:21,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:21,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:21,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:21,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:21,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:21,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:21,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:21,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:21,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:21,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:21,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:21,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:21,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 02:47:21,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:21,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:21,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:21,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:21,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:21,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:21,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:21,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,350 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 02:47:21,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:21,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 02:47:21,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950947178] [2021-03-25 02:47:21,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 02:47:21,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 02:47:21,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-03-25 02:47:21,351 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 233 [2021-03-25 02:47:21,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 182 transitions, 4153 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 02:47:21,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:21,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 233 [2021-03-25 02:47:21,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:21,594 INFO L129 PetriNetUnfolder]: 129/448 cut-off events. [2021-03-25 02:47:21,594 INFO L130 PetriNetUnfolder]: For 8504/8700 co-relation queries the response was YES. [2021-03-25 02:47:21,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 448 events. 129/448 cut-off events. For 8504/8700 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3199 event pairs, 1 based on Foata normal form. 27/374 useless extension candidates. Maximal degree in co-relation 3767. Up to 219 conditions per place. [2021-03-25 02:47:21,598 INFO L132 encePairwiseOnDemand]: 205/233 looper letters, 152 selfloop transitions, 38 changer transitions 0/199 dead transitions. [2021-03-25 02:47:21,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 199 transitions, 4896 flow [2021-03-25 02:47:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 02:47:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 02:47:21,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 730 transitions. [2021-03-25 02:47:21,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3916309012875536 [2021-03-25 02:47:21,599 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 730 transitions. [2021-03-25 02:47:21,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 730 transitions. [2021-03-25 02:47:21,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:21,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 730 transitions. [2021-03-25 02:47:21,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.25) internal successors, (730), 8 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 02:47:21,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:21,602 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:21,602 INFO L185 Difference]: Start difference. First operand has 139 places, 182 transitions, 4153 flow. Second operand 8 states and 730 transitions. [2021-03-25 02:47:21,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 199 transitions, 4896 flow [2021-03-25 02:47:21,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 199 transitions, 4805 flow, removed 26 selfloop flow, removed 2 redundant places. [2021-03-25 02:47:21,632 INFO L241 Difference]: Finished difference. Result has 147 places, 190 transitions, 4390 flow [2021-03-25 02:47:21,632 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=4062, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4390, PETRI_PLACES=147, PETRI_TRANSITIONS=190} [2021-03-25 02:47:21,632 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2021-03-25 02:47:21,633 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:21,633 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 190 transitions, 4390 flow [2021-03-25 02:47:21,633 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 190 transitions, 4390 flow [2021-03-25 02:47:21,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 190 transitions, 4390 flow [2021-03-25 02:47:21,665 INFO L129 PetriNetUnfolder]: 129/448 cut-off events. [2021-03-25 02:47:21,666 INFO L130 PetriNetUnfolder]: For 7877/7982 co-relation queries the response was YES. [2021-03-25 02:47:21,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 448 events. 129/448 cut-off events. For 7877/7982 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3241 event pairs, 1 based on Foata normal form. 5/350 useless extension candidates. Maximal degree in co-relation 3521. Up to 126 conditions per place. [2021-03-25 02:47:21,670 INFO L142 LiptonReduction]: Number of co-enabled transitions 848 [2021-03-25 02:47:21,768 INFO L154 LiptonReduction]: Checked pairs total: 268 [2021-03-25 02:47:21,768 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 02:47:21,768 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-03-25 02:47:21,769 INFO L480 AbstractCegarLoop]: Abstraction has has 147 places, 190 transitions, 4397 flow [2021-03-25 02:47:21,769 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 02:47:21,769 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:21,769 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:21,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-03-25 02:47:21,969 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash 287198800, now seen corresponding path program 1 times [2021-03-25 02:47:21,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:21,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357563991] [2021-03-25 02:47:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:21,980 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:21,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,984 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-25 02:47:21,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:21,989 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 02:47:21,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:21,994 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 02:47:21,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357563991] [2021-03-25 02:47:21,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 02:47:21,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 02:47:21,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727492285] [2021-03-25 02:47:21,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 02:47:21,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:21,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 02:47:21,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 02:47:21,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 237 [2021-03-25 02:47:21,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 190 transitions, 4397 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:21,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:21,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 237 [2021-03-25 02:47:21,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:22,260 INFO L129 PetriNetUnfolder]: 131/456 cut-off events. [2021-03-25 02:47:22,261 INFO L130 PetriNetUnfolder]: For 8774/8951 co-relation queries the response was YES. [2021-03-25 02:47:22,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3897 conditions, 456 events. 131/456 cut-off events. For 8774/8951 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3355 event pairs, 1 based on Foata normal form. 18/371 useless extension candidates. Maximal degree in co-relation 3835. Up to 224 conditions per place. [2021-03-25 02:47:22,267 INFO L132 encePairwiseOnDemand]: 190/237 looper letters, 132 selfloop transitions, 55 changer transitions 0/196 dead transitions. [2021-03-25 02:47:22,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 196 transitions, 4890 flow [2021-03-25 02:47:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 02:47:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 02:47:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 536 transitions. [2021-03-25 02:47:22,269 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.45232067510548524 [2021-03-25 02:47:22,269 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 536 transitions. [2021-03-25 02:47:22,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 536 transitions. [2021-03-25 02:47:22,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:22,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 536 transitions. [2021-03-25 02:47:22,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:22,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:22,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:22,272 INFO L185 Difference]: Start difference. First operand has 147 places, 190 transitions, 4397 flow. Second operand 5 states and 536 transitions. [2021-03-25 02:47:22,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 196 transitions, 4890 flow [2021-03-25 02:47:22,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 196 transitions, 4829 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-25 02:47:22,307 INFO L241 Difference]: Finished difference. Result has 149 places, 196 transitions, 4623 flow [2021-03-25 02:47:22,307 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=4336, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4623, PETRI_PLACES=149, PETRI_TRANSITIONS=196} [2021-03-25 02:47:22,307 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2021-03-25 02:47:22,307 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:22,307 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 196 transitions, 4623 flow [2021-03-25 02:47:22,307 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 196 transitions, 4623 flow [2021-03-25 02:47:22,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 196 transitions, 4623 flow [2021-03-25 02:47:22,348 INFO L129 PetriNetUnfolder]: 131/456 cut-off events. [2021-03-25 02:47:22,348 INFO L130 PetriNetUnfolder]: For 8763/8962 co-relation queries the response was YES. [2021-03-25 02:47:22,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 456 events. 131/456 cut-off events. For 8763/8962 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3356 event pairs, 1 based on Foata normal form. 9/356 useless extension candidates. Maximal degree in co-relation 3658. Up to 129 conditions per place. [2021-03-25 02:47:22,354 INFO L142 LiptonReduction]: Number of co-enabled transitions 868 [2021-03-25 02:47:22,455 INFO L154 LiptonReduction]: Checked pairs total: 448 [2021-03-25 02:47:22,455 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 02:47:22,455 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 148 [2021-03-25 02:47:22,455 INFO L480 AbstractCegarLoop]: Abstraction has has 149 places, 196 transitions, 4625 flow [2021-03-25 02:47:22,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:22,455 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:22,455 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:22,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 02:47:22,456 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:22,456 INFO L82 PathProgramCache]: Analyzing trace with hash 401277465, now seen corresponding path program 1 times [2021-03-25 02:47:22,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:22,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195668266] [2021-03-25 02:47:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:22,472 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:22,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,476 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-25 02:47:22,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:22,481 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-25 02:47:22,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:22,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:22,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 02:47:22,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,499 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 02:47:22,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195668266] [2021-03-25 02:47:22,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806845702] [2021-03-25 02:47:22,499 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 02:47:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:22,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 02:47:22,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:22,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:22,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:22,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:22,555 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-25 02:47:22,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:22,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:22,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:22,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:22,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:22,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 02:47:22,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:22,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:22,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:22,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:22,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:22,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:22,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:22,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:22,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:22,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:22,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:22,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:22,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:22,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:22,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,583 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 02:47:22,583 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 02:47:22,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:22,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:22,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:22,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 02:47:22,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:22,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:22,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 02:47:22,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:22,609 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-25 02:47:22,609 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-25 02:47:22,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:22,619 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 02:47:22,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:22,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 02:47:22,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854905404] [2021-03-25 02:47:22,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 02:47:22,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:22,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 02:47:22,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-03-25 02:47:22,620 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 242 [2021-03-25 02:47:22,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 196 transitions, 4625 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 02:47:22,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:22,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 242 [2021-03-25 02:47:22,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:23,004 INFO L129 PetriNetUnfolder]: 133/464 cut-off events. [2021-03-25 02:47:23,004 INFO L130 PetriNetUnfolder]: For 9366/9783 co-relation queries the response was YES. [2021-03-25 02:47:23,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4033 conditions, 464 events. 133/464 cut-off events. For 9366/9783 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3429 event pairs, 1 based on Foata normal form. 30/389 useless extension candidates. Maximal degree in co-relation 3970. Up to 223 conditions per place. [2021-03-25 02:47:23,008 INFO L132 encePairwiseOnDemand]: 211/242 looper letters, 156 selfloop transitions, 41 changer transitions 0/206 dead transitions. [2021-03-25 02:47:23,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 206 transitions, 5210 flow [2021-03-25 02:47:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 02:47:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 02:47:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 740 transitions. [2021-03-25 02:47:23,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3822314049586777 [2021-03-25 02:47:23,012 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 740 transitions. [2021-03-25 02:47:23,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 740 transitions. [2021-03-25 02:47:23,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:23,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 740 transitions. [2021-03-25 02:47:23,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:23,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 242.0) internal successors, (2178), 9 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:23,015 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 242.0) internal successors, (2178), 9 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:23,015 INFO L185 Difference]: Start difference. First operand has 149 places, 196 transitions, 4625 flow. Second operand 8 states and 740 transitions. [2021-03-25 02:47:23,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 206 transitions, 5210 flow [2021-03-25 02:47:23,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 206 transitions, 5187 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 02:47:23,051 INFO L241 Difference]: Finished difference. Result has 156 places, 198 transitions, 4759 flow [2021-03-25 02:47:23,051 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=4602, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4759, PETRI_PLACES=156, PETRI_TRANSITIONS=198} [2021-03-25 02:47:23,052 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2021-03-25 02:47:23,052 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:23,052 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 198 transitions, 4759 flow [2021-03-25 02:47:23,052 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 198 transitions, 4759 flow [2021-03-25 02:47:23,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 198 transitions, 4759 flow [2021-03-25 02:47:23,097 INFO L129 PetriNetUnfolder]: 133/464 cut-off events. [2021-03-25 02:47:23,098 INFO L130 PetriNetUnfolder]: For 9414/9579 co-relation queries the response was YES. [2021-03-25 02:47:23,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3852 conditions, 464 events. 133/464 cut-off events. For 9414/9579 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3427 event pairs, 1 based on Foata normal form. 10/366 useless extension candidates. Maximal degree in co-relation 3788. Up to 133 conditions per place. [2021-03-25 02:47:23,103 INFO L142 LiptonReduction]: Number of co-enabled transitions 876 [2021-03-25 02:47:23,136 INFO L154 LiptonReduction]: Checked pairs total: 87 [2021-03-25 02:47:23,136 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 02:47:23,137 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 85 [2021-03-25 02:47:23,137 INFO L480 AbstractCegarLoop]: Abstraction has has 156 places, 198 transitions, 4759 flow [2021-03-25 02:47:23,137 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 02:47:23,137 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:23,137 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:23,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:47:23,343 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:23,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash 313064903, now seen corresponding path program 1 times [2021-03-25 02:47:23,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:23,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48112209] [2021-03-25 02:47:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:23,355 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:23,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,359 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 02:47:23,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,365 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-03-25 02:47:23,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:23,373 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 02:47:23,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48112209] [2021-03-25 02:47:23,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090713101] [2021-03-25 02:47:23,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:47:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:23,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-25 02:47:23,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:23,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:23,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:23,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:23,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:23,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:23,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:23,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:23,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:23,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:23,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 02:47:23,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:23,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:23,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:23,466 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 02:47:23,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:23,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-03-25 02:47:23,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771371432] [2021-03-25 02:47:23,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 02:47:23,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:23,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 02:47:23,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-25 02:47:23,467 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 243 [2021-03-25 02:47:23,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 198 transitions, 4759 flow. Second operand has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:23,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:23,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 243 [2021-03-25 02:47:23,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:23,822 INFO L129 PetriNetUnfolder]: 135/472 cut-off events. [2021-03-25 02:47:23,822 INFO L130 PetriNetUnfolder]: For 9711/10128 co-relation queries the response was YES. [2021-03-25 02:47:23,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 472 events. 135/472 cut-off events. For 9711/10128 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3448 event pairs, 1 based on Foata normal form. 19/384 useless extension candidates. Maximal degree in co-relation 4102. Up to 246 conditions per place. [2021-03-25 02:47:23,827 INFO L132 encePairwiseOnDemand]: 215/243 looper letters, 161 selfloop transitions, 34 changer transitions 0/204 dead transitions. [2021-03-25 02:47:23,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 204 transitions, 5303 flow [2021-03-25 02:47:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 02:47:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 02:47:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 625 transitions. [2021-03-25 02:47:23,828 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4286694101508916 [2021-03-25 02:47:23,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 625 transitions. [2021-03-25 02:47:23,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 625 transitions. [2021-03-25 02:47:23,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:23,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 625 transitions. [2021-03-25 02:47:23,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:23,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:23,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:23,830 INFO L185 Difference]: Start difference. First operand has 156 places, 198 transitions, 4759 flow. Second operand 6 states and 625 transitions. [2021-03-25 02:47:23,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 204 transitions, 5303 flow [2021-03-25 02:47:23,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 204 transitions, 5258 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-25 02:47:23,870 INFO L241 Difference]: Finished difference. Result has 160 places, 204 transitions, 4965 flow [2021-03-25 02:47:23,870 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=4715, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4965, PETRI_PLACES=160, PETRI_TRANSITIONS=204} [2021-03-25 02:47:23,870 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2021-03-25 02:47:23,870 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:23,871 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 204 transitions, 4965 flow [2021-03-25 02:47:23,871 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 204 transitions, 4965 flow [2021-03-25 02:47:23,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 204 transitions, 4965 flow [2021-03-25 02:47:23,906 INFO L129 PetriNetUnfolder]: 135/472 cut-off events. [2021-03-25 02:47:23,906 INFO L130 PetriNetUnfolder]: For 9237/9350 co-relation queries the response was YES. [2021-03-25 02:47:23,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 472 events. 135/472 cut-off events. For 9237/9350 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3488 event pairs, 1 based on Foata normal form. 9/374 useless extension candidates. Maximal degree in co-relation 3883. Up to 137 conditions per place. [2021-03-25 02:47:23,911 INFO L142 LiptonReduction]: Number of co-enabled transitions 884 [2021-03-25 02:47:23,946 INFO L154 LiptonReduction]: Checked pairs total: 89 [2021-03-25 02:47:23,946 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 02:47:23,946 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-03-25 02:47:23,946 INFO L480 AbstractCegarLoop]: Abstraction has has 160 places, 204 transitions, 4965 flow [2021-03-25 02:47:23,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:23,946 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:23,947 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:24,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:47:24,147 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:24,148 INFO L82 PathProgramCache]: Analyzing trace with hash 312901037, now seen corresponding path program 1 times [2021-03-25 02:47:24,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:24,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315595428] [2021-03-25 02:47:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:24,164 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:24,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,168 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 02:47:24,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:24,173 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 02:47:24,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:24,178 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-25 02:47:24,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,185 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 02:47:24,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315595428] [2021-03-25 02:47:24,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647405311] [2021-03-25 02:47:24,185 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 02:47:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:24,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 02:47:24,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:24,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:24,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:24,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:24,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:24,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:24,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:24,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:24,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:24,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:24,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:24,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:24,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:24,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:24,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:24,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:24,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,277 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 02:47:24,278 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 02:47:24,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:24,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:24,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:24,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 02:47:24,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:24,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:24,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 02:47:24,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:24,291 INFO L147 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size 20 [2021-03-25 02:47:24,291 INFO L142 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size [2021-03-25 02:47:24,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 02:47:24,301 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 02:47:24,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:24,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 02:47:24,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101495976] [2021-03-25 02:47:24,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 02:47:24,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:24,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 02:47:24,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-03-25 02:47:24,302 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 244 [2021-03-25 02:47:24,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 204 transitions, 4965 flow. Second operand has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:24,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:24,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 244 [2021-03-25 02:47:24,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:24,720 INFO L129 PetriNetUnfolder]: 164/568 cut-off events. [2021-03-25 02:47:24,720 INFO L130 PetriNetUnfolder]: For 12778/13196 co-relation queries the response was YES. [2021-03-25 02:47:24,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5060 conditions, 568 events. 164/568 cut-off events. For 12778/13196 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4342 event pairs, 1 based on Foata normal form. 70/510 useless extension candidates. Maximal degree in co-relation 4992. Up to 226 conditions per place. [2021-03-25 02:47:24,732 INFO L132 encePairwiseOnDemand]: 153/244 looper letters, 102 selfloop transitions, 133 changer transitions 0/244 dead transitions. [2021-03-25 02:47:24,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 244 transitions, 6414 flow [2021-03-25 02:47:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 02:47:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 02:47:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 922 transitions. [2021-03-25 02:47:24,733 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4198542805100182 [2021-03-25 02:47:24,733 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 922 transitions. [2021-03-25 02:47:24,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 922 transitions. [2021-03-25 02:47:24,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:24,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 922 transitions. [2021-03-25 02:47:24,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:24,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:24,736 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:24,736 INFO L185 Difference]: Start difference. First operand has 160 places, 204 transitions, 4965 flow. Second operand 9 states and 922 transitions. [2021-03-25 02:47:24,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 244 transitions, 6414 flow [2021-03-25 02:47:24,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 244 transitions, 6208 flow, removed 83 selfloop flow, removed 4 redundant places. [2021-03-25 02:47:24,785 INFO L241 Difference]: Finished difference. Result has 166 places, 240 transitions, 6047 flow [2021-03-25 02:47:24,785 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=4777, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6047, PETRI_PLACES=166, PETRI_TRANSITIONS=240} [2021-03-25 02:47:24,785 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2021-03-25 02:47:24,785 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:24,785 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 240 transitions, 6047 flow [2021-03-25 02:47:24,786 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 240 transitions, 6047 flow [2021-03-25 02:47:24,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 166 places, 240 transitions, 6047 flow [2021-03-25 02:47:24,832 INFO L129 PetriNetUnfolder]: 164/568 cut-off events. [2021-03-25 02:47:24,832 INFO L130 PetriNetUnfolder]: For 13930/14105 co-relation queries the response was YES. [2021-03-25 02:47:24,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 568 events. 164/568 cut-off events. For 13930/14105 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4386 event pairs, 1 based on Foata normal form. 14/452 useless extension candidates. Maximal degree in co-relation 4896. Up to 163 conditions per place. [2021-03-25 02:47:24,838 INFO L142 LiptonReduction]: Number of co-enabled transitions 1028 [2021-03-25 02:47:24,993 INFO L154 LiptonReduction]: Checked pairs total: 964 [2021-03-25 02:47:24,994 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 02:47:24,994 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 209 [2021-03-25 02:47:24,994 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 240 transitions, 6059 flow [2021-03-25 02:47:24,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:24,994 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:24,994 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:25,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-03-25 02:47:25,195 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:25,195 INFO L82 PathProgramCache]: Analyzing trace with hash 313229730, now seen corresponding path program 1 times [2021-03-25 02:47:25,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:25,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443480972] [2021-03-25 02:47:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:25,209 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:25,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,213 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-25 02:47:25,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:25,217 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 02:47:25,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:25,223 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-25 02:47:25,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 02:47:25,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443480972] [2021-03-25 02:47:25,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356183051] [2021-03-25 02:47:25,229 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 02:47:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:25,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-25 02:47:25,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:25,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:25,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:25,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:25,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:25,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:25,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:25,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:25,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:25,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:25,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:25,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:25,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:25,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 02:47:25,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,312 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-25 02:47:25,312 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-25 02:47:25,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 02:47:25,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:25,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:25,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 02:47:25,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:25,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:25,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 02:47:25,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:25,330 INFO L147 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size 20 [2021-03-25 02:47:25,330 INFO L142 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size [2021-03-25 02:47:25,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 02:47:25,339 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 02:47:25,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 02:47:25,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 02:47:25,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461702665] [2021-03-25 02:47:25,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 02:47:25,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 02:47:25,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 02:47:25,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-03-25 02:47:25,341 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 252 [2021-03-25 02:47:25,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 240 transitions, 6059 flow. Second operand has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:25,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 02:47:25,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 252 [2021-03-25 02:47:25,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 02:47:25,742 INFO L129 PetriNetUnfolder]: 166/576 cut-off events. [2021-03-25 02:47:25,742 INFO L130 PetriNetUnfolder]: For 14288/14727 co-relation queries the response was YES. [2021-03-25 02:47:25,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 576 events. 166/576 cut-off events. For 14288/14727 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4504 event pairs, 1 based on Foata normal form. 53/499 useless extension candidates. Maximal degree in co-relation 5299. Up to 221 conditions per place. [2021-03-25 02:47:25,746 INFO L132 encePairwiseOnDemand]: 150/252 looper letters, 97 selfloop transitions, 142 changer transitions 0/248 dead transitions. [2021-03-25 02:47:25,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 248 transitions, 6814 flow [2021-03-25 02:47:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 02:47:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 02:47:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 930 transitions. [2021-03-25 02:47:25,748 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2021-03-25 02:47:25,748 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 930 transitions. [2021-03-25 02:47:25,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 930 transitions. [2021-03-25 02:47:25,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 02:47:25,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 930 transitions. [2021-03-25 02:47:25,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.33333333333333) internal successors, (930), 9 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:25,754 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 02:47:25,754 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 02:47:25,754 INFO L185 Difference]: Start difference. First operand has 166 places, 240 transitions, 6059 flow. Second operand 9 states and 930 transitions. [2021-03-25 02:47:25,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 248 transitions, 6814 flow [2021-03-25 02:47:25,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 248 transitions, 6735 flow, removed 27 selfloop flow, removed 2 redundant places. [2021-03-25 02:47:25,805 INFO L241 Difference]: Finished difference. Result has 174 places, 244 transitions, 6544 flow [2021-03-25 02:47:25,805 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=5980, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6544, PETRI_PLACES=174, PETRI_TRANSITIONS=244} [2021-03-25 02:47:25,805 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2021-03-25 02:47:25,805 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 02:47:25,805 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 244 transitions, 6544 flow [2021-03-25 02:47:25,806 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 244 transitions, 6544 flow [2021-03-25 02:47:25,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 174 places, 244 transitions, 6544 flow [2021-03-25 02:47:25,854 INFO L129 PetriNetUnfolder]: 166/576 cut-off events. [2021-03-25 02:47:25,854 INFO L130 PetriNetUnfolder]: For 14912/15068 co-relation queries the response was YES. [2021-03-25 02:47:25,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 576 events. 166/576 cut-off events. For 14912/15068 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4525 event pairs, 1 based on Foata normal form. 14/460 useless extension candidates. Maximal degree in co-relation 5201. Up to 155 conditions per place. [2021-03-25 02:47:25,860 INFO L142 LiptonReduction]: Number of co-enabled transitions 1044 [2021-03-25 02:47:25,951 INFO L154 LiptonReduction]: Checked pairs total: 468 [2021-03-25 02:47:25,951 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 02:47:25,951 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 146 [2021-03-25 02:47:25,951 INFO L480 AbstractCegarLoop]: Abstraction has has 174 places, 244 transitions, 6548 flow [2021-03-25 02:47:25,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 02:47:25,952 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 02:47:25,952 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 02:47:26,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 02:47:26,156 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 02:47:26,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 02:47:26,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1439443941, now seen corresponding path program 1 times [2021-03-25 02:47:26,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 02:47:26,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088149520] [2021-03-25 02:47:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 02:47:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:26,167 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:26,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,170 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-25 02:47:26,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,175 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 02:47:26,175 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-25 02:47:26,186 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-25 02:47:26,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:26,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 02:47:26,199 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 02:47:26,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,206 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 02:47:26,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088149520] [2021-03-25 02:47:26,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109828564] [2021-03-25 02:47:26,206 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 02:47:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 02:47:26,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-25 02:47:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 02:47:26,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 02:47:26,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:26,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:26,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 02:47:26,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:26,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 02:47:26,275 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-25 02:47:26,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 02:47:26,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 02:47:26,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:26,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:26,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:26,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 02:47:26,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:26,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:26,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 02:47:26,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 02:47:26,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,302 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-25 02:47:26,303 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-25 02:47:26,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 02:47:26,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:26,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 02:47:26,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 02:47:26,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 02:47:26,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,317 INFO L147 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size 23 [2021-03-25 02:47:26,319 INFO L142 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size [2021-03-25 02:47:26,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 02:47:26,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 02:47:26,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-25 02:47:26,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-25 02:47:26,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-25 02:47:26,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,348 INFO L147 QuantifierPusher]: treesize reduction -1, result has 103.4 percent of original size 30 [2021-03-25 02:47:26,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,348 INFO L142 QuantifierPusher]: treesize reduction -1, result has 103.0 percent of original size [2021-03-25 02:47:26,349 INFO L147 QuantifierPusher]: treesize reduction -2, result has 106.5 percent of original size 33 [2021-03-25 02:47:26,368 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:26,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 02:47:26,385 INFO L147 QuantifierPusher]: treesize reduction -2, result has 103.8 percent of original size 54 [2021-03-25 02:47:26,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,386 INFO L142 QuantifierPusher]: treesize reduction -2, result has 103.4 percent of original size [2021-03-25 02:47:26,429 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:26,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,524 INFO L142 QuantifierPusher]: treesize reduction -3, result has 106.8 percent of original size [2021-03-25 02:47:26,525 INFO L147 QuantifierPusher]: treesize reduction -2, result has 103.6 percent of original size 57 [2021-03-25 02:47:26,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,528 INFO L142 QuantifierPusher]: treesize reduction 40, result has 91.9 percent of original size [2021-03-25 02:47:26,537 INFO L147 QuantifierPusher]: treesize reduction -89, result has 103.3 percent of original size 2779 [2021-03-25 02:47:26,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,544 INFO L142 QuantifierPusher]: treesize reduction -72, result has 103.1 percent of original size [2021-03-25 02:47:26,557 INFO L147 QuantifierPusher]: treesize reduction -108, result has 102.1 percent of original size 5365 [2021-03-25 02:47:26,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 02:47:26,566 INFO L142 QuantifierPusher]: treesize reduction -110, result has 101.8 percent of original size [2021-03-25 02:47:27,613 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:29,707 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:32,353 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:35,989 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:41,056 INFO L842 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:47,012 INFO L842 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:47:53,725 INFO L842 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:48:01,402 INFO L842 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:48:11,626 INFO L842 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:48:22,078 INFO L842 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:48:33,611 INFO L842 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:48:46,197 INFO L842 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:48:59,909 INFO L842 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:49:14,612 INFO L842 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:49:31,033 INFO L842 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:49:49,612 INFO L842 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:50:10,301 INFO L842 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:50:33,815 INFO L842 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:50:55,611 INFO L842 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:51:19,600 INFO L842 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:51:46,587 INFO L842 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:52:16,838 INFO L842 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:52:50,522 INFO L842 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:53:23,940 INFO L842 QuantifierPusher]: Run 240 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:54:02,487 INFO L842 QuantifierPusher]: Run 250 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:54:42,570 INFO L842 QuantifierPusher]: Run 260 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:55:39,485 INFO L842 QuantifierPusher]: Run 270 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:56:55,067 INFO L842 QuantifierPusher]: Run 280 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:58:04,462 INFO L842 QuantifierPusher]: Run 290 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 02:59:21,975 INFO L842 QuantifierPusher]: Run 300 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-25 03:00:41,655 INFO L842 QuantifierPusher]: Run 310 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown