/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-RepeatedSemanticLbeWithDisjunctivePredicates.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 [2021-03-26 08:08:37,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 08:08:37,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 08:08:37,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 08:08:37,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 08:08:37,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 08:08:37,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 08:08:37,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 08:08:37,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 08:08:37,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 08:08:37,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 08:08:37,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 08:08:37,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 08:08:37,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 08:08:37,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 08:08:37,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 08:08:37,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 08:08:37,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 08:08:37,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 08:08:37,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 08:08:37,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 08:08:37,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 08:08:37,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 08:08:37,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 08:08:37,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 08:08:37,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 08:08:37,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 08:08:37,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 08:08:37,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 08:08:37,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 08:08:37,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 08:08:37,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 08:08:37,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 08:08:37,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 08:08:37,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 08:08:37,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 08:08:37,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 08:08:37,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 08:08:37,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 08:08:37,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 08:08:37,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 08:08:37,203 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 08:08:37,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 08:08:37,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 08:08:37,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 08:08:37,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 08:08:37,235 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 08:08:37,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 08:08:37,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 08:08:37,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 08:08:37,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 08:08:37,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 08:08:37,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 08:08:37,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 08:08:37,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 08:08:37,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 08:08:37,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 08:08:37,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 08:08:37,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 08:08:37,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 08:08:37,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 08:08:37,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 08:08:37,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 08:08:37,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 08:08:37,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 08:08:37,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 08:08:37,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 08:08:37,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 08:08:37,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 08:08:37,238 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 08:08:37,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 08:08:37,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 08:08:37,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 08:08:37,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 08:08:37,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 08:08:37,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 08:08:37,493 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 08:08:37,494 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 08:08:37,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2021-03-26 08:08:37,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b0bea1d/4f707b564a064e80bf577942345a11e1/FLAG1d6dc8659 [2021-03-26 08:08:38,193 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 08:08:38,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2021-03-26 08:08:38,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b0bea1d/4f707b564a064e80bf577942345a11e1/FLAG1d6dc8659 [2021-03-26 08:08:38,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b0bea1d/4f707b564a064e80bf577942345a11e1 [2021-03-26 08:08:38,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 08:08:38,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 08:08:38,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 08:08:38,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 08:08:38,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 08:08:38,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:38,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7daad7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38, skipping insertion in model container [2021-03-26 08:08:38,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:38,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 08:08:38,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 08:08:38,849 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] [2021-03-26 08:08:38,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:08:38,859 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 08:08:38,904 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] [2021-03-26 08:08:38,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:08:38,954 INFO L208 MainTranslator]: Completed translation [2021-03-26 08:08:38,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38 WrapperNode [2021-03-26 08:08:38,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 08:08:38,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 08:08:38,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 08:08:38,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 08:08:38,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:38,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:38,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 08:08:38,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 08:08:38,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 08:08:38,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 08:08:39,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:39,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:39,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:39,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:39,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:39,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:39,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (1/1) ... [2021-03-26 08:08:39,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 08:08:39,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 08:08:39,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 08:08:39,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 08:08:39,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (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 [2021-03-26 08:08:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-03-26 08:08:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-03-26 08:08:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-03-26 08:08:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-03-26 08:08:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 08:08:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 08:08:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 08:08:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 08:08:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 08:08:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 08:08:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 08:08:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 08:08:39,071 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 08:08:39,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 08:08:39,253 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-26 08:08:39,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:08:39 BoogieIcfgContainer [2021-03-26 08:08:39,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 08:08:39,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 08:08:39,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 08:08:39,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 08:08:39,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 08:08:38" (1/3) ... [2021-03-26 08:08:39,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9462a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:08:39, skipping insertion in model container [2021-03-26 08:08:39,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:38" (2/3) ... [2021-03-26 08:08:39,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9462a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:08:39, skipping insertion in model container [2021-03-26 08:08:39,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:08:39" (3/3) ... [2021-03-26 08:08:39,258 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-2.i [2021-03-26 08:08:39,262 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 08:08:39,264 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 08:08:39,264 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 08:08:39,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,298 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,298 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,298 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,299 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,300 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,300 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,300 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,300 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,300 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,300 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,300 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,300 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,301 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,301 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,301 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,301 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,301 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,301 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,301 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,301 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,302 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,303 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,303 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,303 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,303 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,303 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,303 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,303 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,303 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,304 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,304 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,304 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,304 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,304 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,304 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,304 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,304 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,305 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,305 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,305 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,305 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,305 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,306 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,307 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,307 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,307 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,307 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,307 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,320 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,320 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,320 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,320 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,320 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,320 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:39,324 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 08:08:39,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 08:08:39,361 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 08:08:39,362 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 08:08:39,362 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 08:08:39,362 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 08:08:39,362 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 08:08:39,362 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 08:08:39,362 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 08:08:39,362 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 08:08:39,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 134 flow [2021-03-26 08:08:39,390 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-26 08:08:39,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:08:39,394 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. [2021-03-26 08:08:39,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 134 flow [2021-03-26 08:08:39,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 126 flow [2021-03-26 08:08:39,398 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:39,407 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-26 08:08:39,409 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-26 08:08:39,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 126 flow [2021-03-26 08:08:39,421 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-26 08:08:39,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:08:39,422 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. [2021-03-26 08:08:39,435 INFO L142 LiptonReduction]: Number of co-enabled transitions 1080 [2021-03-26 08:08:40,490 INFO L154 LiptonReduction]: Checked pairs total: 666 [2021-03-26 08:08:40,490 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-26 08:08:40,492 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1095 [2021-03-26 08:08:40,504 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-26 08:08:40,505 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:08:40,506 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:40,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:40,507 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:40,514 INFO L82 PathProgramCache]: Analyzing trace with hash -86387381, now seen corresponding path program 1 times [2021-03-26 08:08:40,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:40,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780929756] [2021-03-26 08:08:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:40,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:40,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:08:40,658 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-26 08:08:40,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:40,663 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-26 08:08:40,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:40,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780929756] [2021-03-26 08:08:40,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:40,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 08:08:40,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516510525] [2021-03-26 08:08:40,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 08:08:40,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:40,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 08:08:40,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 08:08:40,682 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2021-03-26 08:08:40,683 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) [2021-03-26 08:08:40,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:40,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2021-03-26 08:08:40,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:40,723 INFO L129 PetriNetUnfolder]: 40/127 cut-off events. [2021-03-26 08:08:40,723 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:08:40,724 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. [2021-03-26 08:08:40,725 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 5 selfloop transitions, 7 changer transitions 7/36 dead transitions. [2021-03-26 08:08:40,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 114 flow [2021-03-26 08:08:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:08:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:08:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2021-03-26 08:08:40,734 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7838383838383839 [2021-03-26 08:08:40,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2021-03-26 08:08:40,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2021-03-26 08:08:40,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:40,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2021-03-26 08:08:40,739 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) [2021-03-26 08:08:40,742 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) [2021-03-26 08:08:40,743 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) [2021-03-26 08:08:40,744 INFO L185 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 5 states and 388 transitions. [2021-03-26 08:08:40,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 114 flow [2021-03-26 08:08:40,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 08:08:40,746 INFO L241 Difference]: Finished difference. Result has 35 places, 28 transitions, 95 flow [2021-03-26 08:08:40,747 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} [2021-03-26 08:08:40,748 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-26 08:08:40,748 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:40,748 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 28 transitions, 95 flow [2021-03-26 08:08:40,748 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 28 transitions, 95 flow [2021-03-26 08:08:40,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 95 flow [2021-03-26 08:08:40,753 INFO L129 PetriNetUnfolder]: 13/64 cut-off events. [2021-03-26 08:08:40,753 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-26 08:08:40,754 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. [2021-03-26 08:08:40,754 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-26 08:08:40,885 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-26 08:08:41,100 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-26 08:08:41,593 INFO L154 LiptonReduction]: Checked pairs total: 83 [2021-03-26 08:08:41,594 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 08:08:41,594 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 846 [2021-03-26 08:08:41,595 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 83 flow [2021-03-26 08:08:41,595 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) [2021-03-26 08:08:41,595 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:41,595 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:41,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 08:08:41,595 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:41,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:41,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1815707967, now seen corresponding path program 1 times [2021-03-26 08:08:41,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:41,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734287127] [2021-03-26 08:08:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:41,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:41,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:08:41,638 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:08:41,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:41,644 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-26 08:08:41,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:41,653 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:41,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:41,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734287127] [2021-03-26 08:08:41,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:41,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:41,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509093163] [2021-03-26 08:08:41,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:08:41,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:41,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:08:41,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 08:08:41,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2021-03-26 08:08:41,664 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) [2021-03-26 08:08:41,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:41,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2021-03-26 08:08:41,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:41,705 INFO L129 PetriNetUnfolder]: 38/104 cut-off events. [2021-03-26 08:08:41,705 INFO L130 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2021-03-26 08:08:41,705 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. [2021-03-26 08:08:41,706 INFO L132 encePairwiseOnDemand]: 100/107 looper letters, 5 selfloop transitions, 14 changer transitions 0/30 dead transitions. [2021-03-26 08:08:41,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 160 flow [2021-03-26 08:08:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 560 transitions. [2021-03-26 08:08:41,709 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7476635514018691 [2021-03-26 08:08:41,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 560 transitions. [2021-03-26 08:08:41,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 560 transitions. [2021-03-26 08:08:41,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:41,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 560 transitions. [2021-03-26 08:08:41,710 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) [2021-03-26 08:08:41,712 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) [2021-03-26 08:08:41,712 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) [2021-03-26 08:08:41,713 INFO L185 Difference]: Start difference. First operand has 26 places, 22 transitions, 83 flow. Second operand 7 states and 560 transitions. [2021-03-26 08:08:41,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 160 flow [2021-03-26 08:08:41,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 08:08:41,714 INFO L241 Difference]: Finished difference. Result has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:41,714 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} [2021-03-26 08:08:41,714 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-26 08:08:41,714 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:41,714 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:41,715 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:41,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:41,720 INFO L129 PetriNetUnfolder]: 24/86 cut-off events. [2021-03-26 08:08:41,721 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2021-03-26 08:08:41,721 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. [2021-03-26 08:08:41,722 INFO L142 LiptonReduction]: Number of co-enabled transitions 204 [2021-03-26 08:08:41,828 INFO L154 LiptonReduction]: Checked pairs total: 96 [2021-03-26 08:08:41,828 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 08:08:41,829 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 115 [2021-03-26 08:08:41,829 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:41,830 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) [2021-03-26 08:08:41,830 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:41,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:41,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 08:08:41,830 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:41,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:41,834 INFO L82 PathProgramCache]: Analyzing trace with hash 289856118, now seen corresponding path program 1 times [2021-03-26 08:08:41,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:41,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287290108] [2021-03-26 08:08:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:41,876 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:41,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:41,881 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-26 08:08:41,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:41,887 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:41,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:41,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287290108] [2021-03-26 08:08:41,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:41,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 08:08:41,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986827039] [2021-03-26 08:08:41,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:08:41,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:41,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:08:41,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 08:08:41,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 115 [2021-03-26 08:08:41,894 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) [2021-03-26 08:08:41,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:41,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 115 [2021-03-26 08:08:41,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:41,924 INFO L129 PetriNetUnfolder]: 40/108 cut-off events. [2021-03-26 08:08:41,924 INFO L130 PetriNetUnfolder]: For 285/291 co-relation queries the response was YES. [2021-03-26 08:08:41,925 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. [2021-03-26 08:08:41,925 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 12 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2021-03-26 08:08:41,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 236 flow [2021-03-26 08:08:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:08:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:08:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2021-03-26 08:08:41,927 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6991304347826087 [2021-03-26 08:08:41,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2021-03-26 08:08:41,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2021-03-26 08:08:41,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:41,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2021-03-26 08:08:41,928 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) [2021-03-26 08:08:41,929 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) [2021-03-26 08:08:41,929 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) [2021-03-26 08:08:41,929 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 168 flow. Second operand 5 states and 402 transitions. [2021-03-26 08:08:41,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 236 flow [2021-03-26 08:08:41,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 209 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-26 08:08:41,931 INFO L241 Difference]: Finished difference. Result has 38 places, 30 transitions, 178 flow [2021-03-26 08:08:41,931 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} [2021-03-26 08:08:41,931 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-26 08:08:41,931 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:41,932 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-26 08:08:41,932 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-26 08:08:41,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 178 flow [2021-03-26 08:08:41,940 INFO L129 PetriNetUnfolder]: 30/104 cut-off events. [2021-03-26 08:08:41,940 INFO L130 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2021-03-26 08:08:41,940 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. [2021-03-26 08:08:41,941 INFO L142 LiptonReduction]: Number of co-enabled transitions 208 [2021-03-26 08:08:42,036 INFO L154 LiptonReduction]: Checked pairs total: 63 [2021-03-26 08:08:42,037 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:08:42,037 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 106 [2021-03-26 08:08:42,038 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 176 flow [2021-03-26 08:08:42,038 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) [2021-03-26 08:08:42,038 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:42,038 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:42,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 08:08:42,038 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:42,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:42,038 INFO L82 PathProgramCache]: Analyzing trace with hash 287081109, now seen corresponding path program 1 times [2021-03-26 08:08:42,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:42,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555277665] [2021-03-26 08:08:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:42,062 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:42,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,066 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 08:08:42,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:42,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:42,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:42,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555277665] [2021-03-26 08:08:42,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:42,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 08:08:42,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805649528] [2021-03-26 08:08:42,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:08:42,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:42,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:08:42,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 08:08:42,083 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 120 [2021-03-26 08:08:42,084 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) [2021-03-26 08:08:42,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:42,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 120 [2021-03-26 08:08:42,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:42,153 INFO L129 PetriNetUnfolder]: 36/98 cut-off events. [2021-03-26 08:08:42,153 INFO L130 PetriNetUnfolder]: For 267/273 co-relation queries the response was YES. [2021-03-26 08:08:42,154 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. [2021-03-26 08:08:42,154 INFO L132 encePairwiseOnDemand]: 109/120 looper letters, 12 selfloop transitions, 16 changer transitions 0/38 dead transitions. [2021-03-26 08:08:42,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 299 flow [2021-03-26 08:08:42,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:42,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:42,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 562 transitions. [2021-03-26 08:08:42,157 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.669047619047619 [2021-03-26 08:08:42,157 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 562 transitions. [2021-03-26 08:08:42,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 562 transitions. [2021-03-26 08:08:42,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:42,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 562 transitions. [2021-03-26 08:08:42,158 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) [2021-03-26 08:08:42,160 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) [2021-03-26 08:08:42,160 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) [2021-03-26 08:08:42,160 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 176 flow. Second operand 7 states and 562 transitions. [2021-03-26 08:08:42,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 299 flow [2021-03-26 08:08:42,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 280 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-26 08:08:42,162 INFO L241 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:42,162 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} [2021-03-26 08:08:42,162 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2021-03-26 08:08:42,162 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:42,163 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:42,163 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:42,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:42,169 INFO L129 PetriNetUnfolder]: 34/96 cut-off events. [2021-03-26 08:08:42,169 INFO L130 PetriNetUnfolder]: For 347/347 co-relation queries the response was YES. [2021-03-26 08:08:42,169 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. [2021-03-26 08:08:42,170 INFO L142 LiptonReduction]: Number of co-enabled transitions 230 [2021-03-26 08:08:42,251 INFO L154 LiptonReduction]: Checked pairs total: 54 [2021-03-26 08:08:42,251 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 08:08:42,252 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 90 [2021-03-26 08:08:42,252 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 265 flow [2021-03-26 08:08:42,252 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) [2021-03-26 08:08:42,253 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:42,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:42,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 08:08:42,253 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2115172427, now seen corresponding path program 1 times [2021-03-26 08:08:42,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:42,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789810150] [2021-03-26 08:08:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:42,291 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 08:08:42,291 INFO L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-03-26 08:08:42,297 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 08:08:42,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,302 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:08:42,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:42,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:42,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789810150] [2021-03-26 08:08:42,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205867510] [2021-03-26 08:08:42,312 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 [2021-03-26 08:08:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:42,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:42,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:42,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:42,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:42,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:42,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:42,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:42,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:42,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:42,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:42,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:42,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:42,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:42,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:42,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:42,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:42,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:42,515 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 08:08:42,517 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:08:42,519 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:42,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:42,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:42,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:42,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:42,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:42,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638214096] [2021-03-26 08:08:42,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:42,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:42,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:42,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:42,536 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 124 [2021-03-26 08:08:42,537 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) [2021-03-26 08:08:42,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:42,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 124 [2021-03-26 08:08:42,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:42,709 INFO L129 PetriNetUnfolder]: 53/159 cut-off events. [2021-03-26 08:08:42,709 INFO L130 PetriNetUnfolder]: For 911/914 co-relation queries the response was YES. [2021-03-26 08:08:42,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 159 events. 53/159 cut-off events. For 911/914 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 709 event pairs, 0 based on Foata normal form. 11/139 useless extension candidates. Maximal degree in co-relation 655. Up to 46 conditions per place. [2021-03-26 08:08:42,712 INFO L132 encePairwiseOnDemand]: 108/124 looper letters, 6 selfloop transitions, 42 changer transitions 0/57 dead transitions. [2021-03-26 08:08:42,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 587 flow [2021-03-26 08:08:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 08:08:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 08:08:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1208 transitions. [2021-03-26 08:08:42,715 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6494623655913978 [2021-03-26 08:08:42,715 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1208 transitions. [2021-03-26 08:08:42,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1208 transitions. [2021-03-26 08:08:42,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:42,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1208 transitions. [2021-03-26 08:08:42,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 80.53333333333333) internal successors, (1208), 15 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:42,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:42,719 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:42,719 INFO L185 Difference]: Start difference. First operand has 41 places, 35 transitions, 265 flow. Second operand 15 states and 1208 transitions. [2021-03-26 08:08:42,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 587 flow [2021-03-26 08:08:42,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 552 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-26 08:08:42,723 INFO L241 Difference]: Finished difference. Result has 58 places, 57 transitions, 592 flow [2021-03-26 08:08:42,724 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=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=592, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2021-03-26 08:08:42,724 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-26 08:08:42,724 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:42,724 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 57 transitions, 592 flow [2021-03-26 08:08:42,724 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 57 transitions, 592 flow [2021-03-26 08:08:42,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 592 flow [2021-03-26 08:08:42,735 INFO L129 PetriNetUnfolder]: 53/159 cut-off events. [2021-03-26 08:08:42,735 INFO L130 PetriNetUnfolder]: For 1017/1017 co-relation queries the response was YES. [2021-03-26 08:08:42,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 159 events. 53/159 cut-off events. For 1017/1017 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 709 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 677. Up to 43 conditions per place. [2021-03-26 08:08:42,738 INFO L142 LiptonReduction]: Number of co-enabled transitions 328 [2021-03-26 08:08:43,027 INFO L154 LiptonReduction]: Checked pairs total: 290 [2021-03-26 08:08:43,027 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-26 08:08:43,027 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 303 [2021-03-26 08:08:43,034 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 600 flow [2021-03-26 08:08:43,034 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) [2021-03-26 08:08:43,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:43,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:43,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:43,240 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:43,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:43,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1326203396, now seen corresponding path program 1 times [2021-03-26 08:08:43,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:43,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568654868] [2021-03-26 08:08:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:43,277 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:43,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,282 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:08:43,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:43,295 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-26 08:08:43,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:43,303 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:43,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,318 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:43,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:43,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568654868] [2021-03-26 08:08:43,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928961656] [2021-03-26 08:08:43,325 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 [2021-03-26 08:08:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:43,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:43,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:43,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:43,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:43,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:43,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:43,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:43,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:43,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:43,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:43,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:43,422 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-26 08:08:43,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:43,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:43,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:43,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:43,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:43,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:43,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:43,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:43,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:43,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:43,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:43,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:43,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:43,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:43,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:43,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:43,472 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:43,473 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:43,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:43,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:43,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:08:43,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621656240] [2021-03-26 08:08:43,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:08:43,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:43,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:08:43,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:08:43,480 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 136 [2021-03-26 08:08:43,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 600 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:43,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:43,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 136 [2021-03-26 08:08:43,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:43,589 INFO L129 PetriNetUnfolder]: 57/171 cut-off events. [2021-03-26 08:08:43,589 INFO L130 PetriNetUnfolder]: For 1389/1402 co-relation queries the response was YES. [2021-03-26 08:08:43,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 171 events. 57/171 cut-off events. For 1389/1402 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 806 event pairs, 0 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 841. Up to 78 conditions per place. [2021-03-26 08:08:43,590 INFO L132 encePairwiseOnDemand]: 118/136 looper letters, 34 selfloop transitions, 25 changer transitions 0/68 dead transitions. [2021-03-26 08:08:43,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 879 flow [2021-03-26 08:08:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 08:08:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 08:08:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 651 transitions. [2021-03-26 08:08:43,592 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5983455882352942 [2021-03-26 08:08:43,592 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 651 transitions. [2021-03-26 08:08:43,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 651 transitions. [2021-03-26 08:08:43,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:43,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 651 transitions. [2021-03-26 08:08:43,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.375) internal successors, (651), 8 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:43,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:43,595 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:43,595 INFO L185 Difference]: Start difference. First operand has 58 places, 57 transitions, 600 flow. Second operand 8 states and 651 transitions. [2021-03-26 08:08:43,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 879 flow [2021-03-26 08:08:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 615 flow, removed 113 selfloop flow, removed 9 redundant places. [2021-03-26 08:08:43,599 INFO L241 Difference]: Finished difference. Result has 58 places, 61 transitions, 531 flow [2021-03-26 08:08:43,599 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2021-03-26 08:08:43,599 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-26 08:08:43,600 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:43,600 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 61 transitions, 531 flow [2021-03-26 08:08:43,600 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 61 transitions, 531 flow [2021-03-26 08:08:43,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 61 transitions, 531 flow [2021-03-26 08:08:43,609 INFO L129 PetriNetUnfolder]: 57/173 cut-off events. [2021-03-26 08:08:43,609 INFO L130 PetriNetUnfolder]: For 443/443 co-relation queries the response was YES. [2021-03-26 08:08:43,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 173 events. 57/173 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 827 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 544. Up to 49 conditions per place. [2021-03-26 08:08:43,611 INFO L142 LiptonReduction]: Number of co-enabled transitions 348 [2021-03-26 08:08:43,756 INFO L154 LiptonReduction]: Checked pairs total: 203 [2021-03-26 08:08:43,756 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-26 08:08:43,757 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 158 [2021-03-26 08:08:43,757 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 536 flow [2021-03-26 08:08:43,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:43,759 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:43,759 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:43,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:43,972 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:43,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:43,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1026398200, now seen corresponding path program 1 times [2021-03-26 08:08:43,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:43,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569915328] [2021-03-26 08:08:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:44,011 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:44,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,016 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:08:44,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,021 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:44,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:44,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:44,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:44,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569915328] [2021-03-26 08:08:44,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392150793] [2021-03-26 08:08:44,032 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 [2021-03-26 08:08:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:44,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:44,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:44,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:44,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:44,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:44,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:44,111 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-26 08:08:44,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:44,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:44,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:44,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:44,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:44,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:44,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:44,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:44,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:44,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:44,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,131 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:44,131 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:44,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:44,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:44,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:44,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710725905] [2021-03-26 08:08:44,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:44,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:44,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:44,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:44,140 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 143 [2021-03-26 08:08:44,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 536 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) [2021-03-26 08:08:44,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:44,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 143 [2021-03-26 08:08:44,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:44,242 INFO L129 PetriNetUnfolder]: 60/179 cut-off events. [2021-03-26 08:08:44,242 INFO L130 PetriNetUnfolder]: For 667/689 co-relation queries the response was YES. [2021-03-26 08:08:44,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 179 events. 60/179 cut-off events. For 667/689 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 874 event pairs, 0 based on Foata normal form. 12/154 useless extension candidates. Maximal degree in co-relation 679. Up to 80 conditions per place. [2021-03-26 08:08:44,244 INFO L132 encePairwiseOnDemand]: 120/143 looper letters, 35 selfloop transitions, 31 changer transitions 0/75 dead transitions. [2021-03-26 08:08:44,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 765 flow [2021-03-26 08:08:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 583 transitions. [2021-03-26 08:08:44,245 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5824175824175825 [2021-03-26 08:08:44,245 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 583 transitions. [2021-03-26 08:08:44,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 583 transitions. [2021-03-26 08:08:44,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:44,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 583 transitions. [2021-03-26 08:08:44,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:44,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:44,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:44,248 INFO L185 Difference]: Start difference. First operand has 58 places, 61 transitions, 536 flow. Second operand 7 states and 583 transitions. [2021-03-26 08:08:44,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 765 flow [2021-03-26 08:08:44,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 715 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-26 08:08:44,252 INFO L241 Difference]: Finished difference. Result has 61 places, 68 transitions, 648 flow [2021-03-26 08:08:44,252 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=61, PETRI_TRANSITIONS=68} [2021-03-26 08:08:44,252 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2021-03-26 08:08:44,252 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:44,253 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 68 transitions, 648 flow [2021-03-26 08:08:44,253 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 68 transitions, 648 flow [2021-03-26 08:08:44,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 68 transitions, 648 flow [2021-03-26 08:08:44,262 INFO L129 PetriNetUnfolder]: 60/181 cut-off events. [2021-03-26 08:08:44,263 INFO L130 PetriNetUnfolder]: For 594/595 co-relation queries the response was YES. [2021-03-26 08:08:44,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 181 events. 60/181 cut-off events. For 594/595 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 896 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 625. Up to 54 conditions per place. [2021-03-26 08:08:44,264 INFO L142 LiptonReduction]: Number of co-enabled transitions 382 [2021-03-26 08:08:44,340 INFO L154 LiptonReduction]: Checked pairs total: 130 [2021-03-26 08:08:44,340 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 08:08:44,340 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 88 [2021-03-26 08:08:44,341 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 68 transitions, 648 flow [2021-03-26 08:08:44,341 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) [2021-03-26 08:08:44,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:44,341 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:44,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:44,552 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:44,552 INFO L82 PathProgramCache]: Analyzing trace with hash 372590480, now seen corresponding path program 1 times [2021-03-26 08:08:44,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:44,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148892413] [2021-03-26 08:08:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:44,595 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 08:08:44,596 INFO L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-03-26 08:08:44,603 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 08:08:44,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:44,607 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:08:44,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,612 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:44,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:44,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148892413] [2021-03-26 08:08:44,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581061377] [2021-03-26 08:08:44,617 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 [2021-03-26 08:08:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:44,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:44,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:44,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:44,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:44,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:44,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:44,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:44,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:44,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:44,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:44,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:44,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:44,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:44,742 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 08:08:44,742 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:08:44,743 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:44,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:44,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:44,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:44,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:44,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:44,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:44,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468778071] [2021-03-26 08:08:44,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:44,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:44,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:44,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:44,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 147 [2021-03-26 08:08:44,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 648 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) [2021-03-26 08:08:44,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:44,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 147 [2021-03-26 08:08:44,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:44,986 INFO L129 PetriNetUnfolder]: 80/247 cut-off events. [2021-03-26 08:08:44,987 INFO L130 PetriNetUnfolder]: For 1314/1334 co-relation queries the response was YES. [2021-03-26 08:08:44,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 247 events. 80/247 cut-off events. For 1314/1334 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1353 event pairs, 0 based on Foata normal form. 18/212 useless extension candidates. Maximal degree in co-relation 960. Up to 86 conditions per place. [2021-03-26 08:08:44,988 INFO L132 encePairwiseOnDemand]: 112/147 looper letters, 10 selfloop transitions, 83 changer transitions 0/102 dead transitions. [2021-03-26 08:08:44,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 1131 flow [2021-03-26 08:08:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 08:08:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 08:08:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1233 transitions. [2021-03-26 08:08:44,991 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2021-03-26 08:08:44,991 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1233 transitions. [2021-03-26 08:08:44,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1233 transitions. [2021-03-26 08:08:44,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:44,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1233 transitions. [2021-03-26 08:08:44,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 82.2) internal successors, (1233), 15 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:44,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 147.0) internal successors, (2352), 16 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:44,996 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 147.0) internal successors, (2352), 16 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:44,996 INFO L185 Difference]: Start difference. First operand has 61 places, 68 transitions, 648 flow. Second operand 15 states and 1233 transitions. [2021-03-26 08:08:44,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 1131 flow [2021-03-26 08:08:45,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 1096 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-26 08:08:45,002 INFO L241 Difference]: Finished difference. Result has 77 places, 102 transitions, 1175 flow [2021-03-26 08:08:45,002 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1175, PETRI_PLACES=77, PETRI_TRANSITIONS=102} [2021-03-26 08:08:45,002 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2021-03-26 08:08:45,002 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:45,002 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 102 transitions, 1175 flow [2021-03-26 08:08:45,003 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 102 transitions, 1175 flow [2021-03-26 08:08:45,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 102 transitions, 1175 flow [2021-03-26 08:08:45,016 INFO L129 PetriNetUnfolder]: 80/247 cut-off events. [2021-03-26 08:08:45,016 INFO L130 PetriNetUnfolder]: For 1207/1215 co-relation queries the response was YES. [2021-03-26 08:08:45,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 247 events. 80/247 cut-off events. For 1207/1215 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1372 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 998. Up to 86 conditions per place. [2021-03-26 08:08:45,018 INFO L142 LiptonReduction]: Number of co-enabled transitions 572 [2021-03-26 08:08:45,218 INFO L154 LiptonReduction]: Checked pairs total: 638 [2021-03-26 08:08:45,218 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-26 08:08:45,218 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 216 [2021-03-26 08:08:45,219 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 101 transitions, 1165 flow [2021-03-26 08:08:45,219 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) [2021-03-26 08:08:45,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:45,219 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:45,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:45,419 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:45,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1202846484, now seen corresponding path program 1 times [2021-03-26 08:08:45,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:45,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974631336] [2021-03-26 08:08:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:45,440 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:45,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,443 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:45,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:45,448 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:08:45,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:45,454 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:08:45,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:45,460 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:45,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:45,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974631336] [2021-03-26 08:08:45,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726008101] [2021-03-26 08:08:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-03-26 08:08:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:45,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:45,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:45,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:45,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:45,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:45,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:45,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:45,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:45,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:45,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:45,537 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-26 08:08:45,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 08:08:45,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 08:08:45,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:45,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:45,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:45,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:45,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:45,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:45,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:45,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:45,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:45,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:45,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:45,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:45,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:45,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:45,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:45,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:45,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:45,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:45,585 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:45,585 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:45,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:45,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:45,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:08:45,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609364254] [2021-03-26 08:08:45,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:08:45,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:45,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:08:45,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:08:45,593 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 159 [2021-03-26 08:08:45,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 101 transitions, 1165 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:45,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:45,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 159 [2021-03-26 08:08:45,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:45,825 INFO L129 PetriNetUnfolder]: 86/274 cut-off events. [2021-03-26 08:08:45,826 INFO L130 PetriNetUnfolder]: For 1628/1678 co-relation queries the response was YES. [2021-03-26 08:08:45,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 274 events. 86/274 cut-off events. For 1628/1678 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1657 event pairs, 0 based on Foata normal form. 17/231 useless extension candidates. Maximal degree in co-relation 1257. Up to 114 conditions per place. [2021-03-26 08:08:45,828 INFO L132 encePairwiseOnDemand]: 125/159 looper letters, 59 selfloop transitions, 49 changer transitions 0/117 dead transitions. [2021-03-26 08:08:45,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 117 transitions, 1592 flow [2021-03-26 08:08:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-26 08:08:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-26 08:08:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1146 transitions. [2021-03-26 08:08:45,830 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5148247978436657 [2021-03-26 08:08:45,830 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1146 transitions. [2021-03-26 08:08:45,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1146 transitions. [2021-03-26 08:08:45,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:45,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1146 transitions. [2021-03-26 08:08:45,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 81.85714285714286) internal successors, (1146), 14 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:45,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 159.0) internal successors, (2385), 15 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:45,834 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 159.0) internal successors, (2385), 15 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:45,834 INFO L185 Difference]: Start difference. First operand has 77 places, 101 transitions, 1165 flow. Second operand 14 states and 1146 transitions. [2021-03-26 08:08:45,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 117 transitions, 1592 flow [2021-03-26 08:08:45,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 117 transitions, 1452 flow, removed 49 selfloop flow, removed 6 redundant places. [2021-03-26 08:08:45,843 INFO L241 Difference]: Finished difference. Result has 88 places, 113 transitions, 1356 flow [2021-03-26 08:08:45,843 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1356, PETRI_PLACES=88, PETRI_TRANSITIONS=113} [2021-03-26 08:08:45,843 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2021-03-26 08:08:45,843 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:45,843 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 113 transitions, 1356 flow [2021-03-26 08:08:45,844 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 113 transitions, 1356 flow [2021-03-26 08:08:45,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 113 transitions, 1356 flow [2021-03-26 08:08:45,861 INFO L129 PetriNetUnfolder]: 86/274 cut-off events. [2021-03-26 08:08:45,861 INFO L130 PetriNetUnfolder]: For 1224/1231 co-relation queries the response was YES. [2021-03-26 08:08:45,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 274 events. 86/274 cut-off events. For 1224/1231 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1657 event pairs, 0 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 1113. Up to 92 conditions per place. [2021-03-26 08:08:45,863 INFO L142 LiptonReduction]: Number of co-enabled transitions 618 [2021-03-26 08:08:46,092 INFO L154 LiptonReduction]: Checked pairs total: 443 [2021-03-26 08:08:46,092 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-26 08:08:46,092 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 249 [2021-03-26 08:08:46,093 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 113 transitions, 1370 flow [2021-03-26 08:08:46,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:46,093 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:46,093 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:46,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-03-26 08:08:46,310 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:46,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1845797068, now seen corresponding path program 1 times [2021-03-26 08:08:46,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:46,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444371072] [2021-03-26 08:08:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:46,349 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:46,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,353 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:46,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,358 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:08:46,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:46,364 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:08:46,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:46,370 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:46,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:46,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444371072] [2021-03-26 08:08:46,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018171575] [2021-03-26 08:08:46,376 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 [2021-03-26 08:08:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:46,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:46,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:46,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:46,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:46,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:46,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:46,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:46,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:46,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:46,454 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:08:46,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:08:46,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:08:46,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:46,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:46,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:46,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:46,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:46,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:46,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:46,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:46,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:46,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:46,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,483 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:08:46,483 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:08:46,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:46,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:46,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:46,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:08:46,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:46,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:08:46,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:08:46,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:46,504 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:46,504 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:46,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:46,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:46,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:08:46,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569698256] [2021-03-26 08:08:46,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:08:46,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:46,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:08:46,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:08:46,512 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 169 [2021-03-26 08:08:46,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 113 transitions, 1370 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:46,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:46,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 169 [2021-03-26 08:08:46,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:46,802 INFO L129 PetriNetUnfolder]: 93/300 cut-off events. [2021-03-26 08:08:46,803 INFO L130 PetriNetUnfolder]: For 1714/1788 co-relation queries the response was YES. [2021-03-26 08:08:46,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 300 events. 93/300 cut-off events. For 1714/1788 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1902 event pairs, 0 based on Foata normal form. 27/260 useless extension candidates. Maximal degree in co-relation 1395. Up to 109 conditions per place. [2021-03-26 08:08:46,806 INFO L132 encePairwiseOnDemand]: 126/169 looper letters, 52 selfloop transitions, 67 changer transitions 0/128 dead transitions. [2021-03-26 08:08:46,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 128 transitions, 1793 flow [2021-03-26 08:08:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 08:08:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 08:08:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1236 transitions. [2021-03-26 08:08:46,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.48757396449704143 [2021-03-26 08:08:46,808 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1236 transitions. [2021-03-26 08:08:46,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1236 transitions. [2021-03-26 08:08:46,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:46,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1236 transitions. [2021-03-26 08:08:46,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 82.4) internal successors, (1236), 15 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:46,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 169.0) internal successors, (2704), 16 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:46,813 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 169.0) internal successors, (2704), 16 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:46,813 INFO L185 Difference]: Start difference. First operand has 88 places, 113 transitions, 1370 flow. Second operand 15 states and 1236 transitions. [2021-03-26 08:08:46,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 128 transitions, 1793 flow [2021-03-26 08:08:46,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 1734 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-26 08:08:46,824 INFO L241 Difference]: Finished difference. Result has 99 places, 123 transitions, 1650 flow [2021-03-26 08:08:46,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1650, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2021-03-26 08:08:46,824 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2021-03-26 08:08:46,824 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:46,824 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 123 transitions, 1650 flow [2021-03-26 08:08:46,825 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 123 transitions, 1650 flow [2021-03-26 08:08:46,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 123 transitions, 1650 flow [2021-03-26 08:08:46,843 INFO L129 PetriNetUnfolder]: 93/300 cut-off events. [2021-03-26 08:08:46,843 INFO L130 PetriNetUnfolder]: For 1607/1631 co-relation queries the response was YES. [2021-03-26 08:08:46,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 300 events. 93/300 cut-off events. For 1607/1631 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1937 event pairs, 0 based on Foata normal form. 3/235 useless extension candidates. Maximal degree in co-relation 1346. Up to 106 conditions per place. [2021-03-26 08:08:46,846 INFO L142 LiptonReduction]: Number of co-enabled transitions 666 [2021-03-26 08:08:46,922 INFO L154 LiptonReduction]: Checked pairs total: 115 [2021-03-26 08:08:46,922 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:08:46,922 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 98 [2021-03-26 08:08:46,923 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 1655 flow [2021-03-26 08:08:46,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:46,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:46,924 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:47,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:47,143 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:47,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:47,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1028546097, now seen corresponding path program 1 times [2021-03-26 08:08:47,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:47,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051194108] [2021-03-26 08:08:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:47,165 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:47,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,169 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:08:47,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,173 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:08:47,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,178 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:47,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:47,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:47,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051194108] [2021-03-26 08:08:47,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913349848] [2021-03-26 08:08:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-03-26 08:08:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:47,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:47,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:47,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:47,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:47,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:47,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:47,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:47,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:47,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:47,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:47,272 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-26 08:08:47,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:47,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:47,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:47,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:47,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,295 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:47,295 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:47,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:47,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:47,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:08:47,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088121858] [2021-03-26 08:08:47,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:08:47,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:47,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:08:47,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:08:47,306 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 172 [2021-03-26 08:08:47,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 1655 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) [2021-03-26 08:08:47,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:47,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 172 [2021-03-26 08:08:47,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:47,511 INFO L129 PetriNetUnfolder]: 98/320 cut-off events. [2021-03-26 08:08:47,511 INFO L130 PetriNetUnfolder]: For 2127/2196 co-relation queries the response was YES. [2021-03-26 08:08:47,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 320 events. 98/320 cut-off events. For 2127/2196 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2086 event pairs, 0 based on Foata normal form. 18/266 useless extension candidates. Maximal degree in co-relation 1612. Up to 132 conditions per place. [2021-03-26 08:08:47,514 INFO L132 encePairwiseOnDemand]: 136/172 looper letters, 76 selfloop transitions, 52 changer transitions 0/137 dead transitions. [2021-03-26 08:08:47,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 137 transitions, 2071 flow [2021-03-26 08:08:47,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:08:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:08:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 769 transitions. [2021-03-26 08:08:47,517 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4967700258397933 [2021-03-26 08:08:47,517 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 769 transitions. [2021-03-26 08:08:47,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 769 transitions. [2021-03-26 08:08:47,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:47,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 769 transitions. [2021-03-26 08:08:47,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.44444444444444) internal successors, (769), 9 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:47,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:47,521 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:47,521 INFO L185 Difference]: Start difference. First operand has 99 places, 123 transitions, 1655 flow. Second operand 9 states and 769 transitions. [2021-03-26 08:08:47,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 137 transitions, 2071 flow [2021-03-26 08:08:47,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 137 transitions, 1953 flow, removed 21 selfloop flow, removed 9 redundant places. [2021-03-26 08:08:47,533 INFO L241 Difference]: Finished difference. Result has 101 places, 132 transitions, 1821 flow [2021-03-26 08:08:47,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1821, PETRI_PLACES=101, PETRI_TRANSITIONS=132} [2021-03-26 08:08:47,533 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2021-03-26 08:08:47,533 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:47,534 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 132 transitions, 1821 flow [2021-03-26 08:08:47,534 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 132 transitions, 1821 flow [2021-03-26 08:08:47,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 132 transitions, 1821 flow [2021-03-26 08:08:47,553 INFO L129 PetriNetUnfolder]: 98/318 cut-off events. [2021-03-26 08:08:47,553 INFO L130 PetriNetUnfolder]: For 1844/1858 co-relation queries the response was YES. [2021-03-26 08:08:47,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 318 events. 98/318 cut-off events. For 1844/1858 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2064 event pairs, 0 based on Foata normal form. 3/250 useless extension candidates. Maximal degree in co-relation 1477. Up to 116 conditions per place. [2021-03-26 08:08:47,556 INFO L142 LiptonReduction]: Number of co-enabled transitions 708 [2021-03-26 08:08:47,599 INFO L154 LiptonReduction]: Checked pairs total: 141 [2021-03-26 08:08:47,599 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:08:47,599 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 66 [2021-03-26 08:08:47,601 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 132 transitions, 1821 flow [2021-03-26 08:08:47,601 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) [2021-03-26 08:08:47,601 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:47,601 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:47,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:47,816 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:47,816 INFO L82 PathProgramCache]: Analyzing trace with hash 399269998, now seen corresponding path program 1 times [2021-03-26 08:08:47,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:47,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299493079] [2021-03-26 08:08:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:47,830 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:47,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,834 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-26 08:08:47,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:47,840 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:47,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,846 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:47,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:47,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:47,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299493079] [2021-03-26 08:08:47,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943543845] [2021-03-26 08:08:47,858 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 [2021-03-26 08:08:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:47,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:47,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:47,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:47,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:47,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:47,930 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:08:47,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:47,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:47,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:47,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:47,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:47,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:47,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:47,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:47,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:47,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:47,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:47,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:47,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:47,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:47,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:47,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:47,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:47,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:47,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:47,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:47,971 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:47,971 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:47,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:47,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:47,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:08:47,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621520937] [2021-03-26 08:08:47,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:08:47,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:08:47,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:08:47,983 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 174 [2021-03-26 08:08:47,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 132 transitions, 1821 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) [2021-03-26 08:08:47,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:47,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 174 [2021-03-26 08:08:47,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:48,179 INFO L129 PetriNetUnfolder]: 101/330 cut-off events. [2021-03-26 08:08:48,179 INFO L130 PetriNetUnfolder]: For 2381/2452 co-relation queries the response was YES. [2021-03-26 08:08:48,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 330 events. 101/330 cut-off events. For 2381/2452 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2156 event pairs, 0 based on Foata normal form. 18/274 useless extension candidates. Maximal degree in co-relation 1715. Up to 163 conditions per place. [2021-03-26 08:08:48,181 INFO L132 encePairwiseOnDemand]: 152/174 looper letters, 102 selfloop transitions, 28 changer transitions 0/139 dead transitions. [2021-03-26 08:08:48,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 2174 flow [2021-03-26 08:08:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2021-03-26 08:08:48,183 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5032840722495895 [2021-03-26 08:08:48,183 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2021-03-26 08:08:48,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2021-03-26 08:08:48,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:48,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2021-03-26 08:08:48,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:48,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:48,186 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:48,186 INFO L185 Difference]: Start difference. First operand has 101 places, 132 transitions, 1821 flow. Second operand 7 states and 613 transitions. [2021-03-26 08:08:48,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 2174 flow [2021-03-26 08:08:48,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 139 transitions, 2102 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-26 08:08:48,198 INFO L241 Difference]: Finished difference. Result has 104 places, 136 transitions, 1900 flow [2021-03-26 08:08:48,198 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1900, PETRI_PLACES=104, PETRI_TRANSITIONS=136} [2021-03-26 08:08:48,198 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2021-03-26 08:08:48,199 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:48,199 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 136 transitions, 1900 flow [2021-03-26 08:08:48,199 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 136 transitions, 1900 flow [2021-03-26 08:08:48,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 136 transitions, 1900 flow [2021-03-26 08:08:48,218 INFO L129 PetriNetUnfolder]: 101/332 cut-off events. [2021-03-26 08:08:48,218 INFO L130 PetriNetUnfolder]: For 2135/2148 co-relation queries the response was YES. [2021-03-26 08:08:48,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 332 events. 101/332 cut-off events. For 2135/2148 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2224 event pairs, 0 based on Foata normal form. 3/260 useless extension candidates. Maximal degree in co-relation 1564. Up to 119 conditions per place. [2021-03-26 08:08:48,221 INFO L142 LiptonReduction]: Number of co-enabled transitions 726 [2021-03-26 08:08:48,285 INFO L154 LiptonReduction]: Checked pairs total: 63 [2021-03-26 08:08:48,285 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:08:48,285 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86 [2021-03-26 08:08:48,286 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 136 transitions, 1906 flow [2021-03-26 08:08:48,286 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) [2021-03-26 08:08:48,286 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:48,286 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:48,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-03-26 08:08:48,501 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash -325358055, now seen corresponding path program 1 times [2021-03-26 08:08:48,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:48,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491650746] [2021-03-26 08:08:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:48,520 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-26 08:08:48,520 INFO L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-03-26 08:08:48,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:08:48,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 08:08:48,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:48,537 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:08:48,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:48,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:48,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491650746] [2021-03-26 08:08:48,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116988770] [2021-03-26 08:08:48,549 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 [2021-03-26 08:08:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:48,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:48,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:48,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:48,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:48,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:48,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:48,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:48,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:48,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:48,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:08:48,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:48,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:48,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:08:48,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:48,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:48,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:48,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:48,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:48,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:48,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:48,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:48,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:48,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:48,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:48,665 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 08:08:48,666 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:08:48,667 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:48,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:48,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:48,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:48,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:48,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:48,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:08:48,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415501161] [2021-03-26 08:08:48,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:08:48,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:48,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:08:48,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:08:48,682 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2021-03-26 08:08:48,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 136 transitions, 1906 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) [2021-03-26 08:08:48,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:48,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2021-03-26 08:08:48,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:49,109 INFO L129 PetriNetUnfolder]: 130/437 cut-off events. [2021-03-26 08:08:49,109 INFO L130 PetriNetUnfolder]: For 4419/4490 co-relation queries the response was YES. [2021-03-26 08:08:49,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 437 events. 130/437 cut-off events. For 4419/4490 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3045 event pairs, 0 based on Foata normal form. 24/361 useless extension candidates. Maximal degree in co-relation 2279. Up to 166 conditions per place. [2021-03-26 08:08:49,112 INFO L132 encePairwiseOnDemand]: 115/176 looper letters, 18 selfloop transitions, 157 changer transitions 0/184 dead transitions. [2021-03-26 08:08:49,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 184 transitions, 2961 flow [2021-03-26 08:08:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-26 08:08:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-26 08:08:49,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1591 transitions. [2021-03-26 08:08:49,116 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.47577751196172247 [2021-03-26 08:08:49,116 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1591 transitions. [2021-03-26 08:08:49,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1591 transitions. [2021-03-26 08:08:49,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:49,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1591 transitions. [2021-03-26 08:08:49,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 83.73684210526316) internal successors, (1591), 19 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:49,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 176.0) internal successors, (3520), 20 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:49,122 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 176.0) internal successors, (3520), 20 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:49,122 INFO L185 Difference]: Start difference. First operand has 104 places, 136 transitions, 1906 flow. Second operand 19 states and 1591 transitions. [2021-03-26 08:08:49,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 184 transitions, 2961 flow [2021-03-26 08:08:49,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 184 transitions, 2907 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-26 08:08:49,136 INFO L241 Difference]: Finished difference. Result has 124 places, 183 transitions, 3037 flow [2021-03-26 08:08:49,137 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3037, PETRI_PLACES=124, PETRI_TRANSITIONS=183} [2021-03-26 08:08:49,137 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2021-03-26 08:08:49,137 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:49,137 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 183 transitions, 3037 flow [2021-03-26 08:08:49,137 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 183 transitions, 3037 flow [2021-03-26 08:08:49,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 183 transitions, 3037 flow [2021-03-26 08:08:49,164 INFO L129 PetriNetUnfolder]: 130/431 cut-off events. [2021-03-26 08:08:49,164 INFO L130 PetriNetUnfolder]: For 4056/4087 co-relation queries the response was YES. [2021-03-26 08:08:49,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2386 conditions, 431 events. 130/431 cut-off events. For 4056/4087 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2938 event pairs, 0 based on Foata normal form. 4/337 useless extension candidates. Maximal degree in co-relation 2338. Up to 165 conditions per place. [2021-03-26 08:08:49,168 INFO L142 LiptonReduction]: Number of co-enabled transitions 964 [2021-03-26 08:08:49,499 INFO L154 LiptonReduction]: Checked pairs total: 2001 [2021-03-26 08:08:49,499 INFO L156 LiptonReduction]: Total number of compositions: 19 [2021-03-26 08:08:49,499 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 362 [2021-03-26 08:08:49,499 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 183 transitions, 3037 flow [2021-03-26 08:08:49,500 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) [2021-03-26 08:08:49,500 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:49,500 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:49,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-03-26 08:08:49,716 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:49,716 INFO L82 PathProgramCache]: Analyzing trace with hash 981118143, now seen corresponding path program 1 times [2021-03-26 08:08:49,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:49,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643744289] [2021-03-26 08:08:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:49,742 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:49,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,745 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-26 08:08:49,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:49,751 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:49,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:49,757 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:49,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:49,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:49,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:49,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643744289] [2021-03-26 08:08:49,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635635702] [2021-03-26 08:08:49,769 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 [2021-03-26 08:08:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:49,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:49,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:49,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:49,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:49,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:49,822 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:08:49,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:49,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:49,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:49,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:49,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:49,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:49,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:49,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:49,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:49,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:49,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:49,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:49,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:08:49,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:49,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:08:49,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:49,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:49,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:49,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:49,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:49,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:49,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:49,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:49,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:49,858 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:49,858 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:49,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:49,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:49,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:08:49,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181830008] [2021-03-26 08:08:49,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:08:49,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:49,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:08:49,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:08:49,869 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 195 [2021-03-26 08:08:49,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 183 transitions, 3037 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) [2021-03-26 08:08:49,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:49,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 195 [2021-03-26 08:08:49,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:50,102 INFO L129 PetriNetUnfolder]: 132/441 cut-off events. [2021-03-26 08:08:50,103 INFO L130 PetriNetUnfolder]: For 4879/4966 co-relation queries the response was YES. [2021-03-26 08:08:50,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 441 events. 132/441 cut-off events. For 4879/4966 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3111 event pairs, 0 based on Foata normal form. 18/359 useless extension candidates. Maximal degree in co-relation 2627. Up to 214 conditions per place. [2021-03-26 08:08:50,106 INFO L132 encePairwiseOnDemand]: 169/195 looper letters, 148 selfloop transitions, 36 changer transitions 0/193 dead transitions. [2021-03-26 08:08:50,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 193 transitions, 3557 flow [2021-03-26 08:08:50,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2021-03-26 08:08:50,107 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.46373626373626375 [2021-03-26 08:08:50,107 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2021-03-26 08:08:50,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2021-03-26 08:08:50,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:50,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2021-03-26 08:08:50,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:50,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:50,109 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:50,109 INFO L185 Difference]: Start difference. First operand has 124 places, 183 transitions, 3037 flow. Second operand 7 states and 633 transitions. [2021-03-26 08:08:50,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 193 transitions, 3557 flow [2021-03-26 08:08:50,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 193 transitions, 3328 flow, removed 85 selfloop flow, removed 7 redundant places. [2021-03-26 08:08:50,129 INFO L241 Difference]: Finished difference. Result has 125 places, 186 transitions, 3001 flow [2021-03-26 08:08:50,130 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3001, PETRI_PLACES=125, PETRI_TRANSITIONS=186} [2021-03-26 08:08:50,130 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2021-03-26 08:08:50,130 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:50,130 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 186 transitions, 3001 flow [2021-03-26 08:08:50,130 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 186 transitions, 3001 flow [2021-03-26 08:08:50,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 125 places, 186 transitions, 3001 flow [2021-03-26 08:08:50,157 INFO L129 PetriNetUnfolder]: 132/445 cut-off events. [2021-03-26 08:08:50,157 INFO L130 PetriNetUnfolder]: For 3540/3551 co-relation queries the response was YES. [2021-03-26 08:08:50,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 445 events. 132/445 cut-off events. For 3540/3551 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3190 event pairs, 0 based on Foata normal form. 1/344 useless extension candidates. Maximal degree in co-relation 2288. Up to 163 conditions per place. [2021-03-26 08:08:50,161 INFO L142 LiptonReduction]: Number of co-enabled transitions 978 [2021-03-26 08:08:50,358 INFO L154 LiptonReduction]: Checked pairs total: 803 [2021-03-26 08:08:50,358 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-26 08:08:50,359 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 229 [2021-03-26 08:08:50,359 INFO L480 AbstractCegarLoop]: Abstraction has has 125 places, 185 transitions, 2991 flow [2021-03-26 08:08:50,360 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) [2021-03-26 08:08:50,360 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:50,360 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:50,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-26 08:08:50,576 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:50,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash 926580598, now seen corresponding path program 1 times [2021-03-26 08:08:50,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:50,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795991149] [2021-03-26 08:08:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:50,605 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:50,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,609 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:50,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:50,613 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:08:50,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:50,617 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:08:50,618 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:50,626 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:50,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:50,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795991149] [2021-03-26 08:08:50,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410394394] [2021-03-26 08:08:50,631 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 [2021-03-26 08:08:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:50,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:50,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:50,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:50,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:50,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:50,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:50,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:50,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:50,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:50,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:50,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:50,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:50,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:50,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:50,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:50,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:50,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:50,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:50,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:50,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:50,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:50,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:50,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:50,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:50,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:50,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:50,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:50,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:50,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:50,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:50,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:50,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:08:50,723 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-03-26 08:08:50,723 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:50,723 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:50,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:50,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:50,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:08:50,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153992042] [2021-03-26 08:08:50,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:08:50,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:50,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:08:50,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:08:50,732 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 204 [2021-03-26 08:08:50,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 185 transitions, 2991 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) [2021-03-26 08:08:50,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:50,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 204 [2021-03-26 08:08:50,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:51,348 INFO L129 PetriNetUnfolder]: 159/536 cut-off events. [2021-03-26 08:08:51,348 INFO L130 PetriNetUnfolder]: For 6359/6417 co-relation queries the response was YES. [2021-03-26 08:08:51,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 536 events. 159/536 cut-off events. For 6359/6417 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4016 event pairs, 0 based on Foata normal form. 27/440 useless extension candidates. Maximal degree in co-relation 3044. Up to 212 conditions per place. [2021-03-26 08:08:51,353 INFO L132 encePairwiseOnDemand]: 130/204 looper letters, 64 selfloop transitions, 162 changer transitions 0/235 dead transitions. [2021-03-26 08:08:51,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 235 transitions, 4225 flow [2021-03-26 08:08:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-26 08:08:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-03-26 08:08:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1928 transitions. [2021-03-26 08:08:51,355 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.41091219096334186 [2021-03-26 08:08:51,355 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1928 transitions. [2021-03-26 08:08:51,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1928 transitions. [2021-03-26 08:08:51,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:51,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1928 transitions. [2021-03-26 08:08:51,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 83.82608695652173) internal successors, (1928), 23 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 204.0) internal successors, (4896), 24 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,370 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 204.0) internal successors, (4896), 24 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,370 INFO L185 Difference]: Start difference. First operand has 125 places, 185 transitions, 2991 flow. Second operand 23 states and 1928 transitions. [2021-03-26 08:08:51,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 235 transitions, 4225 flow [2021-03-26 08:08:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 235 transitions, 4166 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-03-26 08:08:51,399 INFO L241 Difference]: Finished difference. Result has 150 places, 229 transitions, 4191 flow [2021-03-26 08:08:51,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=2932, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4191, PETRI_PLACES=150, PETRI_TRANSITIONS=229} [2021-03-26 08:08:51,399 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2021-03-26 08:08:51,399 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:51,400 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 229 transitions, 4191 flow [2021-03-26 08:08:51,400 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 229 transitions, 4191 flow [2021-03-26 08:08:51,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 229 transitions, 4191 flow [2021-03-26 08:08:51,438 INFO L129 PetriNetUnfolder]: 159/534 cut-off events. [2021-03-26 08:08:51,439 INFO L130 PetriNetUnfolder]: For 5620/5678 co-relation queries the response was YES. [2021-03-26 08:08:51,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 534 events. 159/534 cut-off events. For 5620/5678 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4038 event pairs, 0 based on Foata normal form. 8/421 useless extension candidates. Maximal degree in co-relation 3084. Up to 210 conditions per place. [2021-03-26 08:08:51,444 INFO L142 LiptonReduction]: Number of co-enabled transitions 1164 [2021-03-26 08:08:51,890 INFO L154 LiptonReduction]: Checked pairs total: 1566 [2021-03-26 08:08:51,890 INFO L156 LiptonReduction]: Total number of compositions: 18 [2021-03-26 08:08:51,890 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 491 [2021-03-26 08:08:51,891 INFO L480 AbstractCegarLoop]: Abstraction has has 150 places, 229 transitions, 4202 flow [2021-03-26 08:08:51,891 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) [2021-03-26 08:08:51,891 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:51,891 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:52,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-26 08:08:52,104 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:52,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:52,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1391574432, now seen corresponding path program 1 times [2021-03-26 08:08:52,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:52,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462034959] [2021-03-26 08:08:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:52,129 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:52,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,133 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:52,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,138 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:08:52,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:52,144 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:08:52,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:52,151 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:52,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:52,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462034959] [2021-03-26 08:08:52,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844260647] [2021-03-26 08:08:52,157 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 [2021-03-26 08:08:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:52,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:52,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:52,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:52,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:52,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:52,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:52,221 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:08:52,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:08:52,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:08:52,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:52,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:52,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:52,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:52,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:52,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:52,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:52,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:52,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,250 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:08:52,250 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:08:52,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:52,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:08:52,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:08:52,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:08:52,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,265 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:52,265 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:52,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:52,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:52,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:08:52,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640982785] [2021-03-26 08:08:52,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:08:52,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:52,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:08:52,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:08:52,272 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 222 [2021-03-26 08:08:52,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 229 transitions, 4202 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:52,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:52,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 222 [2021-03-26 08:08:52,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:52,778 INFO L129 PetriNetUnfolder]: 169/567 cut-off events. [2021-03-26 08:08:52,778 INFO L130 PetriNetUnfolder]: For 7551/7621 co-relation queries the response was YES. [2021-03-26 08:08:52,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3708 conditions, 567 events. 169/567 cut-off events. For 7551/7621 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4257 event pairs, 0 based on Foata normal form. 22/460 useless extension candidates. Maximal degree in co-relation 3650. Up to 229 conditions per place. [2021-03-26 08:08:52,783 INFO L132 encePairwiseOnDemand]: 157/222 looper letters, 119 selfloop transitions, 129 changer transitions 0/257 dead transitions. [2021-03-26 08:08:52,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 257 transitions, 5269 flow [2021-03-26 08:08:52,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-26 08:08:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-26 08:08:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1373 transitions. [2021-03-26 08:08:52,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3865427927927928 [2021-03-26 08:08:52,785 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1373 transitions. [2021-03-26 08:08:52,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1373 transitions. [2021-03-26 08:08:52,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:52,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1373 transitions. [2021-03-26 08:08:52,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 85.8125) internal successors, (1373), 16 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:52,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 222.0) internal successors, (3774), 17 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:52,789 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 222.0) internal successors, (3774), 17 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:52,789 INFO L185 Difference]: Start difference. First operand has 150 places, 229 transitions, 4202 flow. Second operand 16 states and 1373 transitions. [2021-03-26 08:08:52,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 257 transitions, 5269 flow [2021-03-26 08:08:52,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 257 transitions, 4773 flow, removed 208 selfloop flow, removed 12 redundant places. [2021-03-26 08:08:52,821 INFO L241 Difference]: Finished difference. Result has 157 places, 246 transitions, 4537 flow [2021-03-26 08:08:52,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=3788, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4537, PETRI_PLACES=157, PETRI_TRANSITIONS=246} [2021-03-26 08:08:52,821 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2021-03-26 08:08:52,821 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:52,822 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 246 transitions, 4537 flow [2021-03-26 08:08:52,822 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 246 transitions, 4537 flow [2021-03-26 08:08:52,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 246 transitions, 4537 flow [2021-03-26 08:08:52,876 INFO L129 PetriNetUnfolder]: 169/567 cut-off events. [2021-03-26 08:08:52,876 INFO L130 PetriNetUnfolder]: For 6418/6486 co-relation queries the response was YES. [2021-03-26 08:08:52,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 567 events. 169/567 cut-off events. For 6418/6486 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4352 event pairs, 0 based on Foata normal form. 5/443 useless extension candidates. Maximal degree in co-relation 3314. Up to 223 conditions per place. [2021-03-26 08:08:52,882 INFO L142 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-26 08:08:53,040 INFO L154 LiptonReduction]: Checked pairs total: 1048 [2021-03-26 08:08:53,041 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 08:08:53,041 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 220 [2021-03-26 08:08:53,041 INFO L480 AbstractCegarLoop]: Abstraction has has 157 places, 246 transitions, 4537 flow [2021-03-26 08:08:53,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:53,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:53,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:53,242 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:53,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1105821006, now seen corresponding path program 1 times [2021-03-26 08:08:53,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:53,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932995821] [2021-03-26 08:08:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:53,256 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:53,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,260 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:08:53,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:53,265 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:53,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:53,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:53,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:53,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932995821] [2021-03-26 08:08:53,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292707923] [2021-03-26 08:08:53,275 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 [2021-03-26 08:08:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:53,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:53,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:53,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:53,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:53,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:53,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:53,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:53,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:53,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:53,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:53,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:53,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:53,339 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-26 08:08:53,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:53,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:53,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:53,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:53,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:53,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:53,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:53,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:53,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:53,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:53,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:53,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:53,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,353 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:53,354 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:53,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:53,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:53,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:53,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718016658] [2021-03-26 08:08:53,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:53,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:53,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:53,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:53,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 230 [2021-03-26 08:08:53,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 246 transitions, 4537 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) [2021-03-26 08:08:53,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:53,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 230 [2021-03-26 08:08:53,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:53,765 INFO L129 PetriNetUnfolder]: 166/560 cut-off events. [2021-03-26 08:08:53,765 INFO L130 PetriNetUnfolder]: For 7067/7147 co-relation queries the response was YES. [2021-03-26 08:08:53,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3584 conditions, 560 events. 166/560 cut-off events. For 7067/7147 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4260 event pairs, 0 based on Foata normal form. 22/454 useless extension candidates. Maximal degree in co-relation 3525. Up to 245 conditions per place. [2021-03-26 08:08:53,770 INFO L132 encePairwiseOnDemand]: 185/230 looper letters, 175 selfloop transitions, 72 changer transitions 0/256 dead transitions. [2021-03-26 08:08:53,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 256 transitions, 5069 flow [2021-03-26 08:08:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 08:08:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 08:08:53,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 744 transitions. [2021-03-26 08:08:53,772 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4043478260869565 [2021-03-26 08:08:53,772 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 744 transitions. [2021-03-26 08:08:53,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 744 transitions. [2021-03-26 08:08:53,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:53,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 744 transitions. [2021-03-26 08:08:53,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 230.0) internal successors, (2070), 9 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,776 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 230.0) internal successors, (2070), 9 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,776 INFO L185 Difference]: Start difference. First operand has 157 places, 246 transitions, 4537 flow. Second operand 8 states and 744 transitions. [2021-03-26 08:08:53,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 256 transitions, 5069 flow [2021-03-26 08:08:53,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 256 transitions, 4958 flow, removed 26 selfloop flow, removed 8 redundant places. [2021-03-26 08:08:53,810 INFO L241 Difference]: Finished difference. Result has 156 places, 243 transitions, 4505 flow [2021-03-26 08:08:53,810 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4505, PETRI_PLACES=156, PETRI_TRANSITIONS=243} [2021-03-26 08:08:53,810 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2021-03-26 08:08:53,810 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:53,810 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 243 transitions, 4505 flow [2021-03-26 08:08:53,811 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 243 transitions, 4505 flow [2021-03-26 08:08:53,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 243 transitions, 4505 flow [2021-03-26 08:08:53,863 INFO L129 PetriNetUnfolder]: 166/560 cut-off events. [2021-03-26 08:08:53,863 INFO L130 PetriNetUnfolder]: For 6103/6153 co-relation queries the response was YES. [2021-03-26 08:08:53,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 560 events. 166/560 cut-off events. For 6103/6153 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4327 event pairs, 0 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 3285. Up to 219 conditions per place. [2021-03-26 08:08:53,868 INFO L142 LiptonReduction]: Number of co-enabled transitions 1228 [2021-03-26 08:08:53,941 INFO L154 LiptonReduction]: Checked pairs total: 364 [2021-03-26 08:08:53,941 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:08:53,942 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 132 [2021-03-26 08:08:53,942 INFO L480 AbstractCegarLoop]: Abstraction has has 156 places, 243 transitions, 4505 flow [2021-03-26 08:08:53,942 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) [2021-03-26 08:08:53,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:53,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:54,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-03-26 08:08:54,156 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1104915186, now seen corresponding path program 2 times [2021-03-26 08:08:54,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:54,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570075974] [2021-03-26 08:08:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:54,179 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:54,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,182 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:08:54,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,187 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-03-26 08:08:54,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:54,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:54,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:54,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570075974] [2021-03-26 08:08:54,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104176899] [2021-03-26 08:08:54,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:54,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-26 08:08:54,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-26 08:08:54,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:54,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:54,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:54,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:54,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:54,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:54,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:54,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:54,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:54,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:54,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:08:54,279 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-03-26 08:08:54,281 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:54,281 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:54,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:54,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:54,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:54,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014765928] [2021-03-26 08:08:54,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:54,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:54,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:54,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:54,290 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 233 [2021-03-26 08:08:54,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 243 transitions, 4505 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) [2021-03-26 08:08:54,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:54,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 233 [2021-03-26 08:08:54,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:54,745 INFO L129 PetriNetUnfolder]: 175/590 cut-off events. [2021-03-26 08:08:54,746 INFO L130 PetriNetUnfolder]: For 8812/8882 co-relation queries the response was YES. [2021-03-26 08:08:54,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 590 events. 175/590 cut-off events. For 8812/8882 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4550 event pairs, 0 based on Foata normal form. 24/479 useless extension candidates. Maximal degree in co-relation 3805. Up to 245 conditions per place. [2021-03-26 08:08:54,751 INFO L132 encePairwiseOnDemand]: 181/233 looper letters, 167 selfloop transitions, 96 changer transitions 0/272 dead transitions. [2021-03-26 08:08:54,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 272 transitions, 5557 flow [2021-03-26 08:08:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-26 08:08:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-26 08:08:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1073 transitions. [2021-03-26 08:08:54,754 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38376251788268956 [2021-03-26 08:08:54,754 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1073 transitions. [2021-03-26 08:08:54,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1073 transitions. [2021-03-26 08:08:54,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:54,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1073 transitions. [2021-03-26 08:08:54,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 89.41666666666667) internal successors, (1073), 12 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 233.0) internal successors, (3029), 13 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,762 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 233.0) internal successors, (3029), 13 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,762 INFO L185 Difference]: Start difference. First operand has 156 places, 243 transitions, 4505 flow. Second operand 12 states and 1073 transitions. [2021-03-26 08:08:54,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 272 transitions, 5557 flow [2021-03-26 08:08:54,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 272 transitions, 5456 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-26 08:08:54,796 INFO L241 Difference]: Finished difference. Result has 166 places, 261 transitions, 5113 flow [2021-03-26 08:08:54,797 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5113, PETRI_PLACES=166, PETRI_TRANSITIONS=261} [2021-03-26 08:08:54,797 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2021-03-26 08:08:54,797 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:54,797 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 261 transitions, 5113 flow [2021-03-26 08:08:54,797 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 261 transitions, 5113 flow [2021-03-26 08:08:54,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 166 places, 261 transitions, 5113 flow [2021-03-26 08:08:54,841 INFO L129 PetriNetUnfolder]: 175/588 cut-off events. [2021-03-26 08:08:54,841 INFO L130 PetriNetUnfolder]: For 7753/7818 co-relation queries the response was YES. [2021-03-26 08:08:54,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 588 events. 175/588 cut-off events. For 7753/7818 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4615 event pairs, 0 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 3615. Up to 235 conditions per place. [2021-03-26 08:08:54,847 INFO L142 LiptonReduction]: Number of co-enabled transitions 1320 [2021-03-26 08:08:54,980 INFO L154 LiptonReduction]: Checked pairs total: 794 [2021-03-26 08:08:54,981 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-26 08:08:54,981 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 184 [2021-03-26 08:08:54,981 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 260 transitions, 5100 flow [2021-03-26 08:08:54,981 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) [2021-03-26 08:08:54,981 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:54,981 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:55,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:55,189 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:55,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1106647869, now seen corresponding path program 1 times [2021-03-26 08:08:55,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:55,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314375404] [2021-03-26 08:08:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:55,203 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:55,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,207 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:08:55,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:08:55,212 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:55,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:55,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:55,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314375404] [2021-03-26 08:08:55,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:55,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:55,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304696625] [2021-03-26 08:08:55,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:08:55,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:55,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:08:55,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:08:55,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 239 [2021-03-26 08:08:55,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 260 transitions, 5100 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) [2021-03-26 08:08:55,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:55,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 239 [2021-03-26 08:08:55,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:55,520 INFO L129 PetriNetUnfolder]: 184/619 cut-off events. [2021-03-26 08:08:55,520 INFO L130 PetriNetUnfolder]: For 9361/9431 co-relation queries the response was YES. [2021-03-26 08:08:55,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 619 events. 184/619 cut-off events. For 9361/9431 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4864 event pairs, 0 based on Foata normal form. 22/500 useless extension candidates. Maximal degree in co-relation 4129. Up to 252 conditions per place. [2021-03-26 08:08:55,527 INFO L132 encePairwiseOnDemand]: 160/239 looper letters, 140 selfloop transitions, 138 changer transitions 0/287 dead transitions. [2021-03-26 08:08:55,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 287 transitions, 6098 flow [2021-03-26 08:08:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:08:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:08:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 851 transitions. [2021-03-26 08:08:55,528 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.39562993956299397 [2021-03-26 08:08:55,528 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 851 transitions. [2021-03-26 08:08:55,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 851 transitions. [2021-03-26 08:08:55,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:55,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 851 transitions. [2021-03-26 08:08:55,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:55,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:55,531 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:55,531 INFO L185 Difference]: Start difference. First operand has 166 places, 260 transitions, 5100 flow. Second operand 9 states and 851 transitions. [2021-03-26 08:08:55,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 287 transitions, 6098 flow [2021-03-26 08:08:55,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 287 transitions, 5835 flow, removed 107 selfloop flow, removed 4 redundant places. [2021-03-26 08:08:55,577 INFO L241 Difference]: Finished difference. Result has 173 places, 279 transitions, 5641 flow [2021-03-26 08:08:55,577 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=4845, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5641, PETRI_PLACES=173, PETRI_TRANSITIONS=279} [2021-03-26 08:08:55,577 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2021-03-26 08:08:55,577 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:55,578 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 279 transitions, 5641 flow [2021-03-26 08:08:55,578 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 279 transitions, 5641 flow [2021-03-26 08:08:55,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 279 transitions, 5641 flow [2021-03-26 08:08:55,625 INFO L129 PetriNetUnfolder]: 184/619 cut-off events. [2021-03-26 08:08:55,625 INFO L130 PetriNetUnfolder]: For 8601/8695 co-relation queries the response was YES. [2021-03-26 08:08:55,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4029 conditions, 619 events. 184/619 cut-off events. For 8601/8695 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4905 event pairs, 0 based on Foata normal form. 6/482 useless extension candidates. Maximal degree in co-relation 3962. Up to 239 conditions per place. [2021-03-26 08:08:55,631 INFO L142 LiptonReduction]: Number of co-enabled transitions 1394 [2021-03-26 08:08:55,861 INFO L154 LiptonReduction]: Checked pairs total: 1101 [2021-03-26 08:08:55,861 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-26 08:08:55,861 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 284 [2021-03-26 08:08:55,862 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 279 transitions, 5653 flow [2021-03-26 08:08:55,862 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) [2021-03-26 08:08:55,862 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:55,862 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:55,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-26 08:08:55,862 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1012708166, now seen corresponding path program 1 times [2021-03-26 08:08:55,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:55,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944950738] [2021-03-26 08:08:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:55,873 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:55,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,877 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:08:55,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:55,881 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-26 08:08:55,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:55,887 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:55,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:55,893 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:55,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:55,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944950738] [2021-03-26 08:08:55,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106445812] [2021-03-26 08:08:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:55,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:55,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:55,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:55,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:55,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:55,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:55,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:55,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:55,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:55,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:55,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:55,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:55,988 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-26 08:08:55,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:55,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:55,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:56,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:56,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:56,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:56,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:56,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:56,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:56,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:56,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:56,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:56,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:56,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:56,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:56,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:56,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,021 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:56,021 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:56,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:56,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:56,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:08:56,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745802646] [2021-03-26 08:08:56,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:08:56,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:56,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:08:56,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:08:56,033 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 248 [2021-03-26 08:08:56,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 279 transitions, 5653 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) [2021-03-26 08:08:56,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:56,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 248 [2021-03-26 08:08:56,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:56,463 INFO L129 PetriNetUnfolder]: 186/629 cut-off events. [2021-03-26 08:08:56,463 INFO L130 PetriNetUnfolder]: For 10055/10133 co-relation queries the response was YES. [2021-03-26 08:08:56,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4449 conditions, 629 events. 186/629 cut-off events. For 10055/10133 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4994 event pairs, 0 based on Foata normal form. 22/506 useless extension candidates. Maximal degree in co-relation 4380. Up to 303 conditions per place. [2021-03-26 08:08:56,468 INFO L132 encePairwiseOnDemand]: 215/248 looper letters, 229 selfloop transitions, 50 changer transitions 0/288 dead transitions. [2021-03-26 08:08:56,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 288 transitions, 6341 flow [2021-03-26 08:08:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:08:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:08:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 831 transitions. [2021-03-26 08:08:56,470 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.37231182795698925 [2021-03-26 08:08:56,470 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 831 transitions. [2021-03-26 08:08:56,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 831 transitions. [2021-03-26 08:08:56,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:56,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 831 transitions. [2021-03-26 08:08:56,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,472 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,472 INFO L185 Difference]: Start difference. First operand has 173 places, 279 transitions, 5653 flow. Second operand 9 states and 831 transitions. [2021-03-26 08:08:56,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 288 transitions, 6341 flow [2021-03-26 08:08:56,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 288 transitions, 6218 flow, removed 24 selfloop flow, removed 6 redundant places. [2021-03-26 08:08:56,524 INFO L241 Difference]: Finished difference. Result has 176 places, 280 transitions, 5699 flow [2021-03-26 08:08:56,524 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=5530, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5699, PETRI_PLACES=176, PETRI_TRANSITIONS=280} [2021-03-26 08:08:56,525 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2021-03-26 08:08:56,525 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:56,525 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 280 transitions, 5699 flow [2021-03-26 08:08:56,525 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 280 transitions, 5699 flow [2021-03-26 08:08:56,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 176 places, 280 transitions, 5699 flow [2021-03-26 08:08:56,573 INFO L129 PetriNetUnfolder]: 186/625 cut-off events. [2021-03-26 08:08:56,573 INFO L130 PetriNetUnfolder]: For 8763/8818 co-relation queries the response was YES. [2021-03-26 08:08:56,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4125 conditions, 625 events. 186/625 cut-off events. For 8763/8818 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4979 event pairs, 0 based on Foata normal form. 6/489 useless extension candidates. Maximal degree in co-relation 4058. Up to 244 conditions per place. [2021-03-26 08:08:56,580 INFO L142 LiptonReduction]: Number of co-enabled transitions 1400 [2021-03-26 08:08:56,699 INFO L154 LiptonReduction]: Checked pairs total: 381 [2021-03-26 08:08:56,699 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 08:08:56,699 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 174 [2021-03-26 08:08:56,699 INFO L480 AbstractCegarLoop]: Abstraction has has 176 places, 280 transitions, 5717 flow [2021-03-26 08:08:56,700 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) [2021-03-26 08:08:56,700 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:56,700 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:56,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-03-26 08:08:56,900 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:56,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2092909439, now seen corresponding path program 1 times [2021-03-26 08:08:56,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:56,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369985717] [2021-03-26 08:08:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:56,914 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:56,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,918 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:56,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:56,922 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:08:56,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:56,928 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:08:56,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:56,936 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:56,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:56,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369985717] [2021-03-26 08:08:56,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324086319] [2021-03-26 08:08:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:56,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:56,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:56,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:56,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:57,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:57,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:57,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:57,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:57,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:57,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:57,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:57,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:57,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:57,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:57,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:57,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:57,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:57,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:57,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:57,035 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-26 08:08:57,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:57,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:57,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:57,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:57,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:57,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:57,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,049 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:57,049 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:57,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:57,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:57,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:08:57,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036873973] [2021-03-26 08:08:57,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:08:57,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:57,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:08:57,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:08:57,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 252 [2021-03-26 08:08:57,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 280 transitions, 5717 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:57,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 252 [2021-03-26 08:08:57,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:57,674 INFO L129 PetriNetUnfolder]: 193/648 cut-off events. [2021-03-26 08:08:57,675 INFO L130 PetriNetUnfolder]: For 10635/10713 co-relation queries the response was YES. [2021-03-26 08:08:57,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4640 conditions, 648 events. 193/648 cut-off events. For 10635/10713 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5167 event pairs, 0 based on Foata normal form. 32/533 useless extension candidates. Maximal degree in co-relation 4571. Up to 258 conditions per place. [2021-03-26 08:08:57,681 INFO L132 encePairwiseOnDemand]: 155/252 looper letters, 127 selfloop transitions, 164 changer transitions 0/300 dead transitions. [2021-03-26 08:08:57,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 300 transitions, 6628 flow [2021-03-26 08:08:57,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-26 08:08:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-26 08:08:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1414 transitions. [2021-03-26 08:08:57,682 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2021-03-26 08:08:57,682 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1414 transitions. [2021-03-26 08:08:57,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1414 transitions. [2021-03-26 08:08:57,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:57,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1414 transitions. [2021-03-26 08:08:57,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 88.375) internal successors, (1414), 16 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,686 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,686 INFO L185 Difference]: Start difference. First operand has 176 places, 280 transitions, 5717 flow. Second operand 16 states and 1414 transitions. [2021-03-26 08:08:57,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 300 transitions, 6628 flow [2021-03-26 08:08:57,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 300 transitions, 6547 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-26 08:08:57,735 INFO L241 Difference]: Finished difference. Result has 190 places, 291 transitions, 6346 flow [2021-03-26 08:08:57,735 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=5636, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6346, PETRI_PLACES=190, PETRI_TRANSITIONS=291} [2021-03-26 08:08:57,735 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2021-03-26 08:08:57,735 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:57,736 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 291 transitions, 6346 flow [2021-03-26 08:08:57,736 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 291 transitions, 6346 flow [2021-03-26 08:08:57,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 291 transitions, 6346 flow [2021-03-26 08:08:57,787 INFO L129 PetriNetUnfolder]: 193/650 cut-off events. [2021-03-26 08:08:57,788 INFO L130 PetriNetUnfolder]: For 9993/10088 co-relation queries the response was YES. [2021-03-26 08:08:57,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4533 conditions, 650 events. 193/650 cut-off events. For 9993/10088 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5288 event pairs, 0 based on Foata normal form. 22/524 useless extension candidates. Maximal degree in co-relation 4462. Up to 258 conditions per place. [2021-03-26 08:08:57,795 INFO L142 LiptonReduction]: Number of co-enabled transitions 1450 [2021-03-26 08:08:57,941 INFO L154 LiptonReduction]: Checked pairs total: 137 [2021-03-26 08:08:57,941 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:08:57,941 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 206 [2021-03-26 08:08:57,942 INFO L480 AbstractCegarLoop]: Abstraction has has 190 places, 291 transitions, 6348 flow [2021-03-26 08:08:57,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:57,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:58,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:58,152 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:58,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1866000140, now seen corresponding path program 1 times [2021-03-26 08:08:58,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:58,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877489688] [2021-03-26 08:08:58,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:58,166 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:08:58,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,170 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:58,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,174 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:08:58,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:58,179 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:08:58,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:58,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:58,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877489688] [2021-03-26 08:08:58,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115597974] [2021-03-26 08:08:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:58,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:08:58,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:58,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:58,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:58,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:58,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:58,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:58,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:58,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,273 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:08:58,273 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:08:58,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:58,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:08:58,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:08:58,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:58,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:58,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:08:58,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 08:08:58,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:08:58,299 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-26 08:08:58,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,301 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-26 08:08:58,302 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,305 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-26 08:08:58,306 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-26 08:08:58,306 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-26 08:08:58,307 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:58,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:58,308 INFO L142 QuantifierPusher]: treesize reduction -4, result has 105.7 percent of original size [2021-03-26 08:08:58,345 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:08:58,370 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:08:58,377 INFO L147 QuantifierPusher]: treesize reduction 237, result has 93.7 percent of original size 3544 [2021-03-26 08:08:58,385 INFO L147 QuantifierPusher]: treesize reduction 237, result has 93.7 percent of original size 3544 [2021-03-26 08:08:58,393 INFO L142 QuantifierPusher]: treesize reduction 237, result has 93.7 percent of original size [2021-03-26 08:08:58,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3544 [2021-03-26 08:08:58,682 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 16 [2021-03-26 08:08:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:58,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:58,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:08:58,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746340089] [2021-03-26 08:08:58,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:08:58,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:58,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:08:58,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:08:58,684 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 255 [2021-03-26 08:08:58,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 291 transitions, 6348 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) [2021-03-26 08:08:58,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:58,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 255 [2021-03-26 08:08:58,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:59,597 INFO L129 PetriNetUnfolder]: 210/706 cut-off events. [2021-03-26 08:08:59,597 INFO L130 PetriNetUnfolder]: For 15645/15731 co-relation queries the response was YES. [2021-03-26 08:08:59,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 706 events. 210/706 cut-off events. For 15645/15731 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5639 event pairs, 0 based on Foata normal form. 38/583 useless extension candidates. Maximal degree in co-relation 5324. Up to 288 conditions per place. [2021-03-26 08:08:59,603 INFO L132 encePairwiseOnDemand]: 143/255 looper letters, 77 selfloop transitions, 243 changer transitions 0/329 dead transitions. [2021-03-26 08:08:59,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 329 transitions, 7928 flow [2021-03-26 08:08:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-26 08:08:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-03-26 08:08:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2202 transitions. [2021-03-26 08:08:59,608 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33212669683257917 [2021-03-26 08:08:59,608 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2202 transitions. [2021-03-26 08:08:59,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2202 transitions. [2021-03-26 08:08:59,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:59,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2202 transitions. [2021-03-26 08:08:59,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 84.6923076923077) internal successors, (2202), 26 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 255.0) internal successors, (6885), 27 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,614 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 255.0) internal successors, (6885), 27 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,614 INFO L185 Difference]: Start difference. First operand has 190 places, 291 transitions, 6348 flow. Second operand 26 states and 2202 transitions. [2021-03-26 08:08:59,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 329 transitions, 7928 flow [2021-03-26 08:08:59,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 329 transitions, 7790 flow, removed 40 selfloop flow, removed 7 redundant places. [2021-03-26 08:08:59,677 INFO L241 Difference]: Finished difference. Result has 213 places, 324 transitions, 7819 flow [2021-03-26 08:08:59,677 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6210, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7819, PETRI_PLACES=213, PETRI_TRANSITIONS=324} [2021-03-26 08:08:59,677 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2021-03-26 08:08:59,677 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:59,678 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 324 transitions, 7819 flow [2021-03-26 08:08:59,678 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 324 transitions, 7819 flow [2021-03-26 08:08:59,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 213 places, 324 transitions, 7819 flow [2021-03-26 08:08:59,741 INFO L129 PetriNetUnfolder]: 210/706 cut-off events. [2021-03-26 08:08:59,741 INFO L130 PetriNetUnfolder]: For 13770/13896 co-relation queries the response was YES. [2021-03-26 08:08:59,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5412 conditions, 706 events. 210/706 cut-off events. For 13770/13896 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5733 event pairs, 0 based on Foata normal form. 7/551 useless extension candidates. Maximal degree in co-relation 5336. Up to 284 conditions per place. [2021-03-26 08:08:59,748 INFO L142 LiptonReduction]: Number of co-enabled transitions 1590 [2021-03-26 08:09:00,072 INFO L154 LiptonReduction]: Checked pairs total: 1977 [2021-03-26 08:09:00,072 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-26 08:09:00,072 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 395 [2021-03-26 08:09:00,073 INFO L480 AbstractCegarLoop]: Abstraction has has 213 places, 324 transitions, 7812 flow [2021-03-26 08:09:00,073 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) [2021-03-26 08:09:00,073 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:00,073 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:00,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-03-26 08:09:00,273 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:00,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:00,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1136204385, now seen corresponding path program 1 times [2021-03-26 08:09:00,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:00,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019098654] [2021-03-26 08:09:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:00,284 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:00,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:00,287 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:00,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:00,292 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:09:00,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:00,297 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:00,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:00,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019098654] [2021-03-26 08:09:00,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:00,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:00,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33501374] [2021-03-26 08:09:00,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:00,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:00,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:00,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:00,302 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 269 [2021-03-26 08:09:00,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 324 transitions, 7812 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) [2021-03-26 08:09:00,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:00,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 269 [2021-03-26 08:09:00,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:00,726 INFO L129 PetriNetUnfolder]: 224/749 cut-off events. [2021-03-26 08:09:00,726 INFO L130 PetriNetUnfolder]: For 18180/18285 co-relation queries the response was YES. [2021-03-26 08:09:00,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 749 events. 224/749 cut-off events. For 18180/18285 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6116 event pairs, 0 based on Foata normal form. 33/613 useless extension candidates. Maximal degree in co-relation 6174. Up to 309 conditions per place. [2021-03-26 08:09:00,734 INFO L132 encePairwiseOnDemand]: 172/269 looper letters, 172 selfloop transitions, 169 changer transitions 0/350 dead transitions. [2021-03-26 08:09:00,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 350 transitions, 9198 flow [2021-03-26 08:09:00,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:00,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:00,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 882 transitions. [2021-03-26 08:09:00,735 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3643122676579926 [2021-03-26 08:09:00,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 882 transitions. [2021-03-26 08:09:00,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 882 transitions. [2021-03-26 08:09:00,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:00,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 882 transitions. [2021-03-26 08:09:00,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:00,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:00,738 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:00,738 INFO L185 Difference]: Start difference. First operand has 213 places, 324 transitions, 7812 flow. Second operand 9 states and 882 transitions. [2021-03-26 08:09:00,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 350 transitions, 9198 flow [2021-03-26 08:09:00,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 350 transitions, 8578 flow, removed 244 selfloop flow, removed 18 redundant places. [2021-03-26 08:09:00,819 INFO L241 Difference]: Finished difference. Result has 206 places, 341 transitions, 8301 flow [2021-03-26 08:09:00,819 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=7294, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8301, PETRI_PLACES=206, PETRI_TRANSITIONS=341} [2021-03-26 08:09:00,819 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2021-03-26 08:09:00,820 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:00,820 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 341 transitions, 8301 flow [2021-03-26 08:09:00,820 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 341 transitions, 8301 flow [2021-03-26 08:09:00,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 206 places, 341 transitions, 8301 flow [2021-03-26 08:09:00,889 INFO L129 PetriNetUnfolder]: 224/747 cut-off events. [2021-03-26 08:09:00,890 INFO L130 PetriNetUnfolder]: For 15718/15986 co-relation queries the response was YES. [2021-03-26 08:09:00,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5862 conditions, 747 events. 224/747 cut-off events. For 15718/15986 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6181 event pairs, 0 based on Foata normal form. 32/608 useless extension candidates. Maximal degree in co-relation 5787. Up to 299 conditions per place. [2021-03-26 08:09:00,897 INFO L142 LiptonReduction]: Number of co-enabled transitions 1672 [2021-03-26 08:09:01,242 INFO L154 LiptonReduction]: Checked pairs total: 2135 [2021-03-26 08:09:01,242 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-26 08:09:01,242 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 422 [2021-03-26 08:09:01,242 INFO L480 AbstractCegarLoop]: Abstraction has has 206 places, 341 transitions, 8308 flow [2021-03-26 08:09:01,243 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) [2021-03-26 08:09:01,243 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:01,243 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:01,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-26 08:09:01,243 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash 402037337, now seen corresponding path program 1 times [2021-03-26 08:09:01,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:01,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4182035] [2021-03-26 08:09:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:01,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:01,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:01,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:01,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4182035] [2021-03-26 08:09:01,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950145810] [2021-03-26 08:09:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:01,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-26 08:09:01,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:01,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:01,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:01,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:01,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:01,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:01,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:01,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:01,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:01,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:01,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:01,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:01,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:01,310 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-26 08:09:01,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:01,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:01,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-26 08:09:01,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-03-26 08:09:01,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949272514] [2021-03-26 08:09:01,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 08:09:01,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:01,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 08:09:01,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 08:09:01,314 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 282 [2021-03-26 08:09:01,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 341 transitions, 8308 flow. Second operand has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 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) [2021-03-26 08:09:01,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:01,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 282 [2021-03-26 08:09:01,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:01,561 INFO L129 PetriNetUnfolder]: 212/727 cut-off events. [2021-03-26 08:09:01,562 INFO L130 PetriNetUnfolder]: For 23322/23658 co-relation queries the response was YES. [2021-03-26 08:09:01,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5914 conditions, 727 events. 212/727 cut-off events. For 23322/23658 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5979 event pairs, 0 based on Foata normal form. 172/734 useless extension candidates. Maximal degree in co-relation 5838. Up to 285 conditions per place. [2021-03-26 08:09:01,568 INFO L132 encePairwiseOnDemand]: 275/282 looper letters, 170 selfloop transitions, 3 changer transitions 4/333 dead transitions. [2021-03-26 08:09:01,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 333 transitions, 8336 flow [2021-03-26 08:09:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 08:09:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 08:09:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 716 transitions. [2021-03-26 08:09:01,574 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2021-03-26 08:09:01,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 716 transitions. [2021-03-26 08:09:01,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 716 transitions. [2021-03-26 08:09:01,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:01,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 716 transitions. [2021-03-26 08:09:01,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,576 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,576 INFO L185 Difference]: Start difference. First operand has 206 places, 341 transitions, 8308 flow. Second operand 4 states and 716 transitions. [2021-03-26 08:09:01,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 333 transitions, 8336 flow [2021-03-26 08:09:01,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 333 transitions, 8246 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:01,651 INFO L241 Difference]: Finished difference. Result has 207 places, 329 transitions, 7825 flow [2021-03-26 08:09:01,651 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=7896, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7825, PETRI_PLACES=207, PETRI_TRANSITIONS=329} [2021-03-26 08:09:01,651 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2021-03-26 08:09:01,651 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:01,651 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 329 transitions, 7825 flow [2021-03-26 08:09:01,651 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 329 transitions, 7825 flow [2021-03-26 08:09:01,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 207 places, 329 transitions, 7825 flow [2021-03-26 08:09:01,713 INFO L129 PetriNetUnfolder]: 210/711 cut-off events. [2021-03-26 08:09:01,713 INFO L130 PetriNetUnfolder]: For 14006/14161 co-relation queries the response was YES. [2021-03-26 08:09:01,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5632 conditions, 711 events. 210/711 cut-off events. For 14006/14161 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5830 event pairs, 0 based on Foata normal form. 19/613 useless extension candidates. Maximal degree in co-relation 5556. Up to 278 conditions per place. [2021-03-26 08:09:01,721 INFO L142 LiptonReduction]: Number of co-enabled transitions 1608 [2021-03-26 08:09:01,849 INFO L154 LiptonReduction]: Checked pairs total: 204 [2021-03-26 08:09:01,849 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:01,849 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 198 [2021-03-26 08:09:01,850 INFO L480 AbstractCegarLoop]: Abstraction has has 206 places, 328 transitions, 7824 flow [2021-03-26 08:09:01,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 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) [2021-03-26 08:09:01,850 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:01,850 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:02,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-26 08:09:02,056 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:02,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:02,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1136489151, now seen corresponding path program 1 times [2021-03-26 08:09:02,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:02,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590127571] [2021-03-26 08:09:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:02,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:02,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590127571] [2021-03-26 08:09:02,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044595113] [2021-03-26 08:09:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:02,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-26 08:09:02,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:02,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:02,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:02,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:02,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:02,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:02,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:02,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:02,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:02,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:02,134 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-26 08:09:02,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:02,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-26 08:09:02,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-03-26 08:09:02,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085015315] [2021-03-26 08:09:02,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:09:02,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:02,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:09:02,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:02,137 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 284 [2021-03-26 08:09:02,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 328 transitions, 7824 flow. Second operand has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 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) [2021-03-26 08:09:02,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:02,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 284 [2021-03-26 08:09:02,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:02,375 INFO L129 PetriNetUnfolder]: 216/680 cut-off events. [2021-03-26 08:09:02,375 INFO L130 PetriNetUnfolder]: For 21620/21830 co-relation queries the response was YES. [2021-03-26 08:09:02,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6025 conditions, 680 events. 216/680 cut-off events. For 21620/21830 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5247 event pairs, 0 based on Foata normal form. 174/740 useless extension candidates. Maximal degree in co-relation 5948. Up to 288 conditions per place. [2021-03-26 08:09:02,382 INFO L132 encePairwiseOnDemand]: 270/284 looper letters, 158 selfloop transitions, 14 changer transitions 3/329 dead transitions. [2021-03-26 08:09:02,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 329 transitions, 8163 flow [2021-03-26 08:09:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:09:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:09:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 869 transitions. [2021-03-26 08:09:02,383 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6119718309859155 [2021-03-26 08:09:02,383 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 869 transitions. [2021-03-26 08:09:02,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 869 transitions. [2021-03-26 08:09:02,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:02,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 869 transitions. [2021-03-26 08:09:02,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,385 INFO L185 Difference]: Start difference. First operand has 206 places, 328 transitions, 7824 flow. Second operand 5 states and 869 transitions. [2021-03-26 08:09:02,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 329 transitions, 8163 flow [2021-03-26 08:09:02,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 329 transitions, 8083 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-03-26 08:09:02,463 INFO L241 Difference]: Finished difference. Result has 209 places, 326 transitions, 7733 flow [2021-03-26 08:09:02,463 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=7683, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7733, PETRI_PLACES=209, PETRI_TRANSITIONS=326} [2021-03-26 08:09:02,463 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2021-03-26 08:09:02,463 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:02,463 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 326 transitions, 7733 flow [2021-03-26 08:09:02,463 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 326 transitions, 7733 flow [2021-03-26 08:09:02,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 326 transitions, 7733 flow [2021-03-26 08:09:02,528 INFO L129 PetriNetUnfolder]: 215/672 cut-off events. [2021-03-26 08:09:02,529 INFO L130 PetriNetUnfolder]: For 16129/16293 co-relation queries the response was YES. [2021-03-26 08:09:02,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5768 conditions, 672 events. 215/672 cut-off events. For 16129/16293 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5220 event pairs, 0 based on Foata normal form. 22/579 useless extension candidates. Maximal degree in co-relation 5691. Up to 286 conditions per place. [2021-03-26 08:09:02,537 INFO L142 LiptonReduction]: Number of co-enabled transitions 1318 [2021-03-26 08:09:02,668 INFO L154 LiptonReduction]: Checked pairs total: 106 [2021-03-26 08:09:02,669 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:02,669 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 206 [2021-03-26 08:09:02,669 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 326 transitions, 7737 flow [2021-03-26 08:09:02,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 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) [2021-03-26 08:09:02,670 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:02,670 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:02,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:02,884 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:02,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1833051645, now seen corresponding path program 1 times [2021-03-26 08:09:02,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:02,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886803378] [2021-03-26 08:09:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:02,903 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:02,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,907 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-26 08:09:02,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,912 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-26 08:09:02,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:02,919 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:02,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,925 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:02,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:02,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886803378] [2021-03-26 08:09:02,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058094538] [2021-03-26 08:09:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:02,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:02,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:02,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:03,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:03,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:03,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:03,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:03,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:03,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:03,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:03,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:03,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:03,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,028 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:03,028 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:03,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:03,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:03,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:03,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:03,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:03,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:03,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:03,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:03,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:03,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:03,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 08:09:03,059 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-26 08:09:03,060 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:09:03,061 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:03,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:03,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:03,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:03,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:03,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:03,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:03,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356993895] [2021-03-26 08:09:03,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:03,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:03,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:03,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:03,069 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 286 [2021-03-26 08:09:03,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 326 transitions, 7737 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:03,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:03,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 286 [2021-03-26 08:09:03,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:03,896 INFO L129 PetriNetUnfolder]: 260/838 cut-off events. [2021-03-26 08:09:03,896 INFO L130 PetriNetUnfolder]: For 27541/27616 co-relation queries the response was YES. [2021-03-26 08:09:03,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7600 conditions, 838 events. 260/838 cut-off events. For 27541/27616 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6628 event pairs, 0 based on Foata normal form. 38/725 useless extension candidates. Maximal degree in co-relation 7521. Up to 368 conditions per place. [2021-03-26 08:09:03,904 INFO L132 encePairwiseOnDemand]: 181/286 looper letters, 167 selfloop transitions, 217 changer transitions 0/395 dead transitions. [2021-03-26 08:09:03,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 395 transitions, 10446 flow [2021-03-26 08:09:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-26 08:09:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-26 08:09:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1541 transitions. [2021-03-26 08:09:03,912 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3169477581242287 [2021-03-26 08:09:03,912 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1541 transitions. [2021-03-26 08:09:03,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1541 transitions. [2021-03-26 08:09:03,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:03,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1541 transitions. [2021-03-26 08:09:03,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 90.6470588235294) internal successors, (1541), 17 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:03,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:03,919 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 286.0) internal successors, (5148), 18 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:03,919 INFO L185 Difference]: Start difference. First operand has 209 places, 326 transitions, 7737 flow. Second operand 17 states and 1541 transitions. [2021-03-26 08:09:03,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 395 transitions, 10446 flow [2021-03-26 08:09:03,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 395 transitions, 10378 flow, removed 32 selfloop flow, removed 1 redundant places. [2021-03-26 08:09:04,000 INFO L241 Difference]: Finished difference. Result has 228 places, 388 transitions, 10149 flow [2021-03-26 08:09:04,000 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=7711, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10149, PETRI_PLACES=228, PETRI_TRANSITIONS=388} [2021-03-26 08:09:04,001 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2021-03-26 08:09:04,001 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:04,001 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 388 transitions, 10149 flow [2021-03-26 08:09:04,001 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 388 transitions, 10149 flow [2021-03-26 08:09:04,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 228 places, 388 transitions, 10149 flow [2021-03-26 08:09:04,084 INFO L129 PetriNetUnfolder]: 260/837 cut-off events. [2021-03-26 08:09:04,085 INFO L130 PetriNetUnfolder]: For 23223/23438 co-relation queries the response was YES. [2021-03-26 08:09:04,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7565 conditions, 837 events. 260/837 cut-off events. For 23223/23438 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6659 event pairs, 0 based on Foata normal form. 30/714 useless extension candidates. Maximal degree in co-relation 7483. Up to 368 conditions per place. [2021-03-26 08:09:04,094 INFO L142 LiptonReduction]: Number of co-enabled transitions 1562 [2021-03-26 08:09:04,501 INFO L154 LiptonReduction]: Checked pairs total: 3102 [2021-03-26 08:09:04,502 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-26 08:09:04,502 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 501 [2021-03-26 08:09:04,502 INFO L480 AbstractCegarLoop]: Abstraction has has 228 places, 388 transitions, 10149 flow [2021-03-26 08:09:04,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:04,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:04,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:04,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-03-26 08:09:04,708 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash 564581342, now seen corresponding path program 1 times [2021-03-26 08:09:04,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:04,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019740788] [2021-03-26 08:09:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:04,721 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:04,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:04,725 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-03-26 08:09:04,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:04,730 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:04,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:04,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:04,740 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:04,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:04,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019740788] [2021-03-26 08:09:04,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:04,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 08:09:04,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81347537] [2021-03-26 08:09:04,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 08:09:04,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:04,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 08:09:04,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-26 08:09:04,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 301 [2021-03-26 08:09:04,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 388 transitions, 10149 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) [2021-03-26 08:09:04,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:04,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 301 [2021-03-26 08:09:04,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:05,250 INFO L129 PetriNetUnfolder]: 267/854 cut-off events. [2021-03-26 08:09:05,250 INFO L130 PetriNetUnfolder]: For 22807/22920 co-relation queries the response was YES. [2021-03-26 08:09:05,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8279 conditions, 854 events. 267/854 cut-off events. For 22807/22920 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6816 event pairs, 0 based on Foata normal form. 19/721 useless extension candidates. Maximal degree in co-relation 8195. Up to 447 conditions per place. [2021-03-26 08:09:05,258 INFO L132 encePairwiseOnDemand]: 257/301 looper letters, 331 selfloop transitions, 65 changer transitions 1/408 dead transitions. [2021-03-26 08:09:05,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 408 transitions, 11396 flow [2021-03-26 08:09:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 724 transitions. [2021-03-26 08:09:05,259 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.34361651637399143 [2021-03-26 08:09:05,259 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 724 transitions. [2021-03-26 08:09:05,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 724 transitions. [2021-03-26 08:09:05,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:05,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 724 transitions. [2021-03-26 08:09:05,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.42857142857143) internal successors, (724), 7 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 301.0) internal successors, (2408), 8 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,261 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 301.0) internal successors, (2408), 8 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,261 INFO L185 Difference]: Start difference. First operand has 228 places, 388 transitions, 10149 flow. Second operand 7 states and 724 transitions. [2021-03-26 08:09:05,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 408 transitions, 11396 flow [2021-03-26 08:09:05,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 408 transitions, 10939 flow, removed 150 selfloop flow, removed 12 redundant places. [2021-03-26 08:09:05,359 INFO L241 Difference]: Finished difference. Result has 223 places, 392 transitions, 10033 flow [2021-03-26 08:09:05,359 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=9698, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10033, PETRI_PLACES=223, PETRI_TRANSITIONS=392} [2021-03-26 08:09:05,359 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2021-03-26 08:09:05,359 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:05,360 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 392 transitions, 10033 flow [2021-03-26 08:09:05,360 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 392 transitions, 10033 flow [2021-03-26 08:09:05,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 223 places, 392 transitions, 10033 flow [2021-03-26 08:09:05,461 INFO L129 PetriNetUnfolder]: 264/849 cut-off events. [2021-03-26 08:09:05,461 INFO L130 PetriNetUnfolder]: For 21007/21186 co-relation queries the response was YES. [2021-03-26 08:09:05,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7532 conditions, 849 events. 264/849 cut-off events. For 21007/21186 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6870 event pairs, 0 based on Foata normal form. 48/744 useless extension candidates. Maximal degree in co-relation 7450. Up to 355 conditions per place. [2021-03-26 08:09:05,470 INFO L142 LiptonReduction]: Number of co-enabled transitions 1578 [2021-03-26 08:09:05,694 INFO L154 LiptonReduction]: Checked pairs total: 1936 [2021-03-26 08:09:05,694 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 08:09:05,695 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 336 [2021-03-26 08:09:05,695 INFO L480 AbstractCegarLoop]: Abstraction has has 223 places, 392 transitions, 10033 flow [2021-03-26 08:09:05,695 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) [2021-03-26 08:09:05,695 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:05,695 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:05,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-26 08:09:05,695 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:05,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1837511801, now seen corresponding path program 1 times [2021-03-26 08:09:05,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:05,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233879262] [2021-03-26 08:09:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:05,711 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:05,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:05,715 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:05,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:05,720 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:05,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:05,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:05,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:05,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:05,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233879262] [2021-03-26 08:09:05,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:05,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 08:09:05,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885497764] [2021-03-26 08:09:05,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 08:09:05,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:05,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 08:09:05,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 08:09:05,741 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 309 [2021-03-26 08:09:05,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 392 transitions, 10033 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) [2021-03-26 08:09:05,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:05,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 309 [2021-03-26 08:09:05,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:06,261 INFO L129 PetriNetUnfolder]: 267/858 cut-off events. [2021-03-26 08:09:06,262 INFO L130 PetriNetUnfolder]: For 22316/22401 co-relation queries the response was YES. [2021-03-26 08:09:06,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8147 conditions, 858 events. 267/858 cut-off events. For 22316/22401 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6930 event pairs, 0 based on Foata normal form. 19/726 useless extension candidates. Maximal degree in co-relation 8063. Up to 378 conditions per place. [2021-03-26 08:09:06,270 INFO L132 encePairwiseOnDemand]: 227/309 looper letters, 262 selfloop transitions, 136 changer transitions 1/410 dead transitions. [2021-03-26 08:09:06,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 410 transitions, 11195 flow [2021-03-26 08:09:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 08:09:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 08:09:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 818 transitions. [2021-03-26 08:09:06,280 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3309061488673139 [2021-03-26 08:09:06,280 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 818 transitions. [2021-03-26 08:09:06,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 818 transitions. [2021-03-26 08:09:06,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:06,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 818 transitions. [2021-03-26 08:09:06,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.25) internal successors, (818), 8 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:06,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 309.0) internal successors, (2781), 9 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:06,283 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 309.0) internal successors, (2781), 9 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:06,283 INFO L185 Difference]: Start difference. First operand has 223 places, 392 transitions, 10033 flow. Second operand 8 states and 818 transitions. [2021-03-26 08:09:06,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 410 transitions, 11195 flow [2021-03-26 08:09:06,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 410 transitions, 11122 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:06,387 INFO L241 Difference]: Finished difference. Result has 227 places, 393 transitions, 10386 flow [2021-03-26 08:09:06,387 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=9960, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10386, PETRI_PLACES=227, PETRI_TRANSITIONS=393} [2021-03-26 08:09:06,387 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2021-03-26 08:09:06,387 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:06,387 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 393 transitions, 10386 flow [2021-03-26 08:09:06,387 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 393 transitions, 10386 flow [2021-03-26 08:09:06,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 227 places, 393 transitions, 10386 flow [2021-03-26 08:09:06,490 INFO L129 PetriNetUnfolder]: 265/858 cut-off events. [2021-03-26 08:09:06,491 INFO L130 PetriNetUnfolder]: For 22336/22505 co-relation queries the response was YES. [2021-03-26 08:09:06,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7771 conditions, 858 events. 265/858 cut-off events. For 22336/22505 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7043 event pairs, 0 based on Foata normal form. 45/748 useless extension candidates. Maximal degree in co-relation 7688. Up to 358 conditions per place. [2021-03-26 08:09:06,503 INFO L142 LiptonReduction]: Number of co-enabled transitions 1582 [2021-03-26 08:09:06,545 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:09:06,545 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:09:06,545 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 158 [2021-03-26 08:09:06,546 INFO L480 AbstractCegarLoop]: Abstraction has has 227 places, 393 transitions, 10386 flow [2021-03-26 08:09:06,546 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) [2021-03-26 08:09:06,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:06,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:06,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-26 08:09:06,546 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:06,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:06,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1861477281, now seen corresponding path program 1 times [2021-03-26 08:09:06,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:06,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787671031] [2021-03-26 08:09:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:06,558 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:06,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,562 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:06,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,567 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:06,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:06,573 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:06,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:06,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:06,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:06,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787671031] [2021-03-26 08:09:06,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:06,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 08:09:06,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073365602] [2021-03-26 08:09:06,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 08:09:06,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:06,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 08:09:06,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 08:09:06,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 309 [2021-03-26 08:09:06,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 393 transitions, 10386 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) [2021-03-26 08:09:06,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:06,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 309 [2021-03-26 08:09:06,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:07,166 INFO L129 PetriNetUnfolder]: 271/873 cut-off events. [2021-03-26 08:09:07,166 INFO L130 PetriNetUnfolder]: For 24080/24165 co-relation queries the response was YES. [2021-03-26 08:09:07,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 873 events. 271/873 cut-off events. For 24080/24165 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7081 event pairs, 0 based on Foata normal form. 19/739 useless extension candidates. Maximal degree in co-relation 8383. Up to 368 conditions per place. [2021-03-26 08:09:07,175 INFO L132 encePairwiseOnDemand]: 194/309 looper letters, 207 selfloop transitions, 193 changer transitions 1/412 dead transitions. [2021-03-26 08:09:07,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 412 transitions, 11589 flow [2021-03-26 08:09:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 08:09:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 08:09:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 982 transitions. [2021-03-26 08:09:07,181 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.31779935275080906 [2021-03-26 08:09:07,181 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 982 transitions. [2021-03-26 08:09:07,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 982 transitions. [2021-03-26 08:09:07,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:07,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 982 transitions. [2021-03-26 08:09:07,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.2) internal successors, (982), 10 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:07,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 309.0) internal successors, (3399), 11 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:07,183 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 309.0) internal successors, (3399), 11 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:07,183 INFO L185 Difference]: Start difference. First operand has 227 places, 393 transitions, 10386 flow. Second operand 10 states and 982 transitions. [2021-03-26 08:09:07,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 412 transitions, 11589 flow [2021-03-26 08:09:07,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 412 transitions, 11390 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-26 08:09:07,288 INFO L241 Difference]: Finished difference. Result has 231 places, 397 transitions, 10847 flow [2021-03-26 08:09:07,289 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=10187, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10847, PETRI_PLACES=231, PETRI_TRANSITIONS=397} [2021-03-26 08:09:07,289 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2021-03-26 08:09:07,289 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:07,289 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 397 transitions, 10847 flow [2021-03-26 08:09:07,289 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 397 transitions, 10847 flow [2021-03-26 08:09:07,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 397 transitions, 10847 flow [2021-03-26 08:09:07,377 INFO L129 PetriNetUnfolder]: 269/874 cut-off events. [2021-03-26 08:09:07,377 INFO L130 PetriNetUnfolder]: For 23701/23878 co-relation queries the response was YES. [2021-03-26 08:09:07,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8098 conditions, 874 events. 269/874 cut-off events. For 23701/23878 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7288 event pairs, 0 based on Foata normal form. 50/767 useless extension candidates. Maximal degree in co-relation 8014. Up to 366 conditions per place. [2021-03-26 08:09:07,388 INFO L142 LiptonReduction]: Number of co-enabled transitions 1598 [2021-03-26 08:09:07,431 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:09:07,431 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:09:07,431 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 142 [2021-03-26 08:09:07,432 INFO L480 AbstractCegarLoop]: Abstraction has has 231 places, 397 transitions, 10847 flow [2021-03-26 08:09:07,432 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) [2021-03-26 08:09:07,432 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:07,432 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:07,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-26 08:09:07,432 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:07,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1096228399, now seen corresponding path program 1 times [2021-03-26 08:09:07,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:07,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529965115] [2021-03-26 08:09:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:07,444 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:07,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:07,447 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:07,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:07,452 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:07,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:07,457 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:07,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:07,463 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:07,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:07,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529965115] [2021-03-26 08:09:07,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:07,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 08:09:07,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407230076] [2021-03-26 08:09:07,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 08:09:07,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:07,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 08:09:07,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-26 08:09:07,470 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 309 [2021-03-26 08:09:07,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 397 transitions, 10847 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) [2021-03-26 08:09:07,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:07,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 309 [2021-03-26 08:09:07,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:08,137 INFO L129 PetriNetUnfolder]: 291/943 cut-off events. [2021-03-26 08:09:08,137 INFO L130 PetriNetUnfolder]: For 30466/30581 co-relation queries the response was YES. [2021-03-26 08:09:08,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9364 conditions, 943 events. 291/943 cut-off events. For 30466/30581 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7830 event pairs, 0 based on Foata normal form. 23/799 useless extension candidates. Maximal degree in co-relation 9278. Up to 406 conditions per place. [2021-03-26 08:09:08,146 INFO L132 encePairwiseOnDemand]: 161/309 looper letters, 120 selfloop transitions, 304 changer transitions 2/437 dead transitions. [2021-03-26 08:09:08,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 437 transitions, 12889 flow [2021-03-26 08:09:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 08:09:08,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 08:09:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1085 transitions. [2021-03-26 08:09:08,148 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3192115328037658 [2021-03-26 08:09:08,148 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1085 transitions. [2021-03-26 08:09:08,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1085 transitions. [2021-03-26 08:09:08,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:08,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1085 transitions. [2021-03-26 08:09:08,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 98.63636363636364) internal successors, (1085), 11 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:08,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 309.0) internal successors, (3708), 12 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:08,150 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 309.0) internal successors, (3708), 12 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:08,150 INFO L185 Difference]: Start difference. First operand has 231 places, 397 transitions, 10847 flow. Second operand 11 states and 1085 transitions. [2021-03-26 08:09:08,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 437 transitions, 12889 flow [2021-03-26 08:09:08,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 437 transitions, 12625 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-03-26 08:09:08,276 INFO L241 Difference]: Finished difference. Result has 238 places, 425 transitions, 12476 flow [2021-03-26 08:09:08,276 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=10603, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12476, PETRI_PLACES=238, PETRI_TRANSITIONS=425} [2021-03-26 08:09:08,277 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2021-03-26 08:09:08,277 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:08,277 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 425 transitions, 12476 flow [2021-03-26 08:09:08,277 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 425 transitions, 12476 flow [2021-03-26 08:09:08,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 238 places, 425 transitions, 12476 flow [2021-03-26 08:09:08,379 INFO L129 PetriNetUnfolder]: 289/939 cut-off events. [2021-03-26 08:09:08,379 INFO L130 PetriNetUnfolder]: For 29532/29826 co-relation queries the response was YES. [2021-03-26 08:09:08,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9244 conditions, 939 events. 289/939 cut-off events. For 29532/29826 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7971 event pairs, 0 based on Foata normal form. 61/832 useless extension candidates. Maximal degree in co-relation 9157. Up to 405 conditions per place. [2021-03-26 08:09:08,391 INFO L142 LiptonReduction]: Number of co-enabled transitions 1698 [2021-03-26 08:09:08,554 INFO L154 LiptonReduction]: Checked pairs total: 801 [2021-03-26 08:09:08,554 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:09:08,554 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 277 [2021-03-26 08:09:08,554 INFO L480 AbstractCegarLoop]: Abstraction has has 238 places, 425 transitions, 12476 flow [2021-03-26 08:09:08,555 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) [2021-03-26 08:09:08,555 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:08,555 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:08,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-26 08:09:08,555 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:08,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1646718125, now seen corresponding path program 1 times [2021-03-26 08:09:08,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:08,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114719437] [2021-03-26 08:09:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:08,565 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:08,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,569 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:08,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,573 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:09:08,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:08,579 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:08,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:08,585 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:08,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:08,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114719437] [2021-03-26 08:09:08,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439853168] [2021-03-26 08:09:08,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:08,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:08,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:08,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:08,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:08,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:08,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:08,677 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:08,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:08,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:08,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:08,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:08,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:08,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:08,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:08,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:08,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:08,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:08,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,706 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:08,706 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:08,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:08,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:08,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:08,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:08,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,723 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:08,723 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:08,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:08,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:08,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:08,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545390281] [2021-03-26 08:09:08,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:08,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:08,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:08,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:08,730 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 312 [2021-03-26 08:09:08,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 425 transitions, 12476 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:08,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:08,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 312 [2021-03-26 08:09:08,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:09,426 INFO L129 PetriNetUnfolder]: 291/951 cut-off events. [2021-03-26 08:09:09,426 INFO L130 PetriNetUnfolder]: For 29458/29616 co-relation queries the response was YES. [2021-03-26 08:09:09,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9901 conditions, 951 events. 291/951 cut-off events. For 29458/29616 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7947 event pairs, 0 based on Foata normal form. 31/814 useless extension candidates. Maximal degree in co-relation 9812. Up to 412 conditions per place. [2021-03-26 08:09:09,436 INFO L132 encePairwiseOnDemand]: 221/312 looper letters, 265 selfloop transitions, 164 changer transitions 0/440 dead transitions. [2021-03-26 08:09:09,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 440 transitions, 13664 flow [2021-03-26 08:09:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 08:09:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 08:09:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1357 transitions. [2021-03-26 08:09:09,438 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.289957264957265 [2021-03-26 08:09:09,438 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1357 transitions. [2021-03-26 08:09:09,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1357 transitions. [2021-03-26 08:09:09,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:09,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1357 transitions. [2021-03-26 08:09:09,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 90.46666666666667) internal successors, (1357), 15 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:09,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:09,441 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 312.0) internal successors, (4992), 16 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:09,441 INFO L185 Difference]: Start difference. First operand has 238 places, 425 transitions, 12476 flow. Second operand 15 states and 1357 transitions. [2021-03-26 08:09:09,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 440 transitions, 13664 flow [2021-03-26 08:09:09,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 440 transitions, 13432 flow, removed 43 selfloop flow, removed 7 redundant places. [2021-03-26 08:09:09,578 INFO L241 Difference]: Finished difference. Result has 246 places, 428 transitions, 12788 flow [2021-03-26 08:09:09,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=12246, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=12788, PETRI_PLACES=246, PETRI_TRANSITIONS=428} [2021-03-26 08:09:09,578 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2021-03-26 08:09:09,578 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:09,578 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 428 transitions, 12788 flow [2021-03-26 08:09:09,578 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 428 transitions, 12788 flow [2021-03-26 08:09:09,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 246 places, 428 transitions, 12788 flow [2021-03-26 08:09:09,680 INFO L129 PetriNetUnfolder]: 291/950 cut-off events. [2021-03-26 08:09:09,680 INFO L130 PetriNetUnfolder]: For 29535/29820 co-relation queries the response was YES. [2021-03-26 08:09:09,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9426 conditions, 950 events. 291/950 cut-off events. For 29535/29820 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8101 event pairs, 0 based on Foata normal form. 58/837 useless extension candidates. Maximal degree in co-relation 9339. Up to 411 conditions per place. [2021-03-26 08:09:09,692 INFO L142 LiptonReduction]: Number of co-enabled transitions 1710 [2021-03-26 08:09:09,747 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:09:09,747 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:09:09,747 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 169 [2021-03-26 08:09:09,748 INFO L480 AbstractCegarLoop]: Abstraction has has 246 places, 428 transitions, 12788 flow [2021-03-26 08:09:09,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:09,748 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:09,748 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:09,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-26 08:09:09,952 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1667752834, now seen corresponding path program 1 times [2021-03-26 08:09:09,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:09,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093841230] [2021-03-26 08:09:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:09,962 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,966 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:09,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:09,970 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:09,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:09,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:09,976 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:09,985 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:09,985 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:09,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093841230] [2021-03-26 08:09:09,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285858754] [2021-03-26 08:09:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:10,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:10,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:10,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:10,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:10,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:10,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:10,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:10,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:10,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,068 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:10,068 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:10,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:10,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:10,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:10,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:10,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:10,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:10,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 08:09:10,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:10,096 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-26 08:09:10,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,109 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-26 08:09:10,109 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,111 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-26 08:09:10,111 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-26 08:09:10,112 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-26 08:09:10,112 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,113 INFO L142 QuantifierPusher]: treesize reduction -4, result has 105.7 percent of original size [2021-03-26 08:09:10,132 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:10,137 INFO L147 QuantifierPusher]: treesize reduction 17, result has 99.4 percent of original size 2624 [2021-03-26 08:09:10,142 INFO L147 QuantifierPusher]: treesize reduction 17, result has 99.4 percent of original size 2624 [2021-03-26 08:09:10,147 INFO L142 QuantifierPusher]: treesize reduction 17, result has 99.4 percent of original size [2021-03-26 08:09:10,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2624 [2021-03-26 08:09:10,330 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 27 [2021-03-26 08:09:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:10,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:10,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:10,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44312547] [2021-03-26 08:09:10,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:10,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:10,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:10,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:10,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 312 [2021-03-26 08:09:10,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 428 transitions, 12788 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) [2021-03-26 08:09:10,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:10,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 312 [2021-03-26 08:09:10,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:11,509 INFO L129 PetriNetUnfolder]: 306/1000 cut-off events. [2021-03-26 08:09:11,509 INFO L130 PetriNetUnfolder]: For 36910/37084 co-relation queries the response was YES. [2021-03-26 08:09:11,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10575 conditions, 1000 events. 306/1000 cut-off events. For 36910/37084 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8485 event pairs, 0 based on Foata normal form. 33/854 useless extension candidates. Maximal degree in co-relation 10486. Up to 439 conditions per place. [2021-03-26 08:09:11,520 INFO L132 encePairwiseOnDemand]: 152/312 looper letters, 99 selfloop transitions, 356 changer transitions 0/466 dead transitions. [2021-03-26 08:09:11,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 466 transitions, 14899 flow [2021-03-26 08:09:11,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-26 08:09:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-03-26 08:09:11,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2247 transitions. [2021-03-26 08:09:11,523 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.27699704142011833 [2021-03-26 08:09:11,523 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2247 transitions. [2021-03-26 08:09:11,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2247 transitions. [2021-03-26 08:09:11,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:11,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2247 transitions. [2021-03-26 08:09:11,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 86.42307692307692) internal successors, (2247), 26 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:11,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 312.0) internal successors, (8424), 27 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:11,528 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 312.0) internal successors, (8424), 27 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:11,528 INFO L185 Difference]: Start difference. First operand has 246 places, 428 transitions, 12788 flow. Second operand 26 states and 2247 transitions. [2021-03-26 08:09:11,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 466 transitions, 14899 flow [2021-03-26 08:09:11,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 466 transitions, 14689 flow, removed 5 selfloop flow, removed 10 redundant places. [2021-03-26 08:09:11,695 INFO L241 Difference]: Finished difference. Result has 267 places, 461 transitions, 14816 flow [2021-03-26 08:09:11,696 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=12584, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=14816, PETRI_PLACES=267, PETRI_TRANSITIONS=461} [2021-03-26 08:09:11,696 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2021-03-26 08:09:11,696 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:11,696 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 461 transitions, 14816 flow [2021-03-26 08:09:11,696 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 461 transitions, 14816 flow [2021-03-26 08:09:11,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 267 places, 461 transitions, 14816 flow [2021-03-26 08:09:11,819 INFO L129 PetriNetUnfolder]: 307/999 cut-off events. [2021-03-26 08:09:11,819 INFO L130 PetriNetUnfolder]: For 36473/36777 co-relation queries the response was YES. [2021-03-26 08:09:11,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 999 events. 307/999 cut-off events. For 36473/36777 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8578 event pairs, 0 based on Foata normal form. 73/893 useless extension candidates. Maximal degree in co-relation 10473. Up to 439 conditions per place. [2021-03-26 08:09:11,833 INFO L142 LiptonReduction]: Number of co-enabled transitions 1820 [2021-03-26 08:09:12,096 INFO L154 LiptonReduction]: Checked pairs total: 1742 [2021-03-26 08:09:12,096 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-26 08:09:12,096 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 400 [2021-03-26 08:09:12,096 INFO L480 AbstractCegarLoop]: Abstraction has has 267 places, 460 transitions, 14803 flow [2021-03-26 08:09:12,097 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) [2021-03-26 08:09:12,097 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:12,097 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:12,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:12,299 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:12,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1158625694, now seen corresponding path program 1 times [2021-03-26 08:09:12,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:12,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161366246] [2021-03-26 08:09:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:12,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:12,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161366246] [2021-03-26 08:09:12,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056771718] [2021-03-26 08:09:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:12,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-26 08:09:12,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:12,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:12,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:12,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:12,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:12,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:12,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:12,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:12,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:12,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:12,394 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-26 08:09:12,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:12,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-26 08:09:12,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-03-26 08:09:12,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003995770] [2021-03-26 08:09:12,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:09:12,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:12,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:09:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:12,402 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 318 [2021-03-26 08:09:12,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 460 transitions, 14803 flow. Second operand has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:12,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:12,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 318 [2021-03-26 08:09:12,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:12,841 INFO L129 PetriNetUnfolder]: 303/994 cut-off events. [2021-03-26 08:09:12,841 INFO L130 PetriNetUnfolder]: For 40637/40995 co-relation queries the response was YES. [2021-03-26 08:09:12,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11157 conditions, 994 events. 303/994 cut-off events. For 40637/40995 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8464 event pairs, 0 based on Foata normal form. 136/954 useless extension candidates. Maximal degree in co-relation 11062. Up to 435 conditions per place. [2021-03-26 08:09:12,852 INFO L132 encePairwiseOnDemand]: 314/318 looper letters, 171 selfloop transitions, 3 changer transitions 0/459 dead transitions. [2021-03-26 08:09:12,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 459 transitions, 15100 flow [2021-03-26 08:09:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 08:09:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 08:09:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 880 transitions. [2021-03-26 08:09:12,853 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2021-03-26 08:09:12,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 880 transitions. [2021-03-26 08:09:12,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 880 transitions. [2021-03-26 08:09:12,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:12,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 880 transitions. [2021-03-26 08:09:12,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:12,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:12,854 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:12,854 INFO L185 Difference]: Start difference. First operand has 267 places, 460 transitions, 14803 flow. Second operand 4 states and 880 transitions. [2021-03-26 08:09:12,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 459 transitions, 15100 flow [2021-03-26 08:09:13,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 459 transitions, 14309 flow, removed 304 selfloop flow, removed 15 redundant places. [2021-03-26 08:09:13,041 INFO L241 Difference]: Finished difference. Result has 256 places, 454 transitions, 13880 flow [2021-03-26 08:09:13,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=13867, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=13880, PETRI_PLACES=256, PETRI_TRANSITIONS=454} [2021-03-26 08:09:13,042 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2021-03-26 08:09:13,042 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:13,042 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 454 transitions, 13880 flow [2021-03-26 08:09:13,042 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 454 transitions, 13880 flow [2021-03-26 08:09:13,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 256 places, 454 transitions, 13880 flow [2021-03-26 08:09:13,158 INFO L129 PetriNetUnfolder]: 304/993 cut-off events. [2021-03-26 08:09:13,158 INFO L130 PetriNetUnfolder]: For 33450/33738 co-relation queries the response was YES. [2021-03-26 08:09:13,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10453 conditions, 993 events. 304/993 cut-off events. For 33450/33738 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8586 event pairs, 0 based on Foata normal form. 53/1040 useless extension candidates. Maximal degree in co-relation 10361. Up to 397 conditions per place. [2021-03-26 08:09:13,171 INFO L142 LiptonReduction]: Number of co-enabled transitions 1780 [2021-03-26 08:09:13,351 INFO L154 LiptonReduction]: Checked pairs total: 321 [2021-03-26 08:09:13,351 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:13,352 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 310 [2021-03-26 08:09:13,352 INFO L480 AbstractCegarLoop]: Abstraction has has 256 places, 454 transitions, 13881 flow [2021-03-26 08:09:13,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:13,352 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:13,352 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:13,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-03-26 08:09:13,552 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:13,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:13,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1223403888, now seen corresponding path program 1 times [2021-03-26 08:09:13,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:13,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990860201] [2021-03-26 08:09:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:13,561 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:13,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,565 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:13,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,570 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:09:13,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,576 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:13,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:13,582 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:13,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:13,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990860201] [2021-03-26 08:09:13,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147465314] [2021-03-26 08:09:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:13,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:13,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:13,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:13,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:13,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:13,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:13,657 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:13,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:13,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:13,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:13,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:13,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:13,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:13,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,679 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:13,679 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:13,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:13,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:13,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:13,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:13,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,694 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:13,694 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:13,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:13,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:13,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:13,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177875] [2021-03-26 08:09:13,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:13,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:13,700 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 320 [2021-03-26 08:09:13,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 454 transitions, 13881 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:13,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:13,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 320 [2021-03-26 08:09:13,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:14,452 INFO L129 PetriNetUnfolder]: 306/1004 cut-off events. [2021-03-26 08:09:14,452 INFO L130 PetriNetUnfolder]: For 34939/35247 co-relation queries the response was YES. [2021-03-26 08:09:14,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11144 conditions, 1004 events. 306/1004 cut-off events. For 34939/35247 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8497 event pairs, 0 based on Foata normal form. 49/1049 useless extension candidates. Maximal degree in co-relation 11050. Up to 424 conditions per place. [2021-03-26 08:09:14,462 INFO L132 encePairwiseOnDemand]: 224/320 looper letters, 277 selfloop transitions, 182 changer transitions 0/471 dead transitions. [2021-03-26 08:09:14,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 471 transitions, 15195 flow [2021-03-26 08:09:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 08:09:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 08:09:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1366 transitions. [2021-03-26 08:09:14,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28458333333333335 [2021-03-26 08:09:14,464 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1366 transitions. [2021-03-26 08:09:14,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1366 transitions. [2021-03-26 08:09:14,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:14,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1366 transitions. [2021-03-26 08:09:14,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.06666666666666) internal successors, (1366), 15 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:14,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 320.0) internal successors, (5120), 16 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:14,467 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 320.0) internal successors, (5120), 16 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:14,467 INFO L185 Difference]: Start difference. First operand has 256 places, 454 transitions, 13881 flow. Second operand 15 states and 1366 transitions. [2021-03-26 08:09:14,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 471 transitions, 15195 flow [2021-03-26 08:09:14,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 471 transitions, 15175 flow, removed 9 selfloop flow, removed 1 redundant places. [2021-03-26 08:09:14,625 INFO L241 Difference]: Finished difference. Result has 270 places, 457 transitions, 14465 flow [2021-03-26 08:09:14,626 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=13865, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14465, PETRI_PLACES=270, PETRI_TRANSITIONS=457} [2021-03-26 08:09:14,626 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2021-03-26 08:09:14,626 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:14,626 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 457 transitions, 14465 flow [2021-03-26 08:09:14,626 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 457 transitions, 14465 flow [2021-03-26 08:09:14,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 270 places, 457 transitions, 14465 flow [2021-03-26 08:09:14,752 INFO L129 PetriNetUnfolder]: 307/1002 cut-off events. [2021-03-26 08:09:14,752 INFO L130 PetriNetUnfolder]: For 34729/35025 co-relation queries the response was YES. [2021-03-26 08:09:14,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10788 conditions, 1002 events. 307/1002 cut-off events. For 34729/35025 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8641 event pairs, 0 based on Foata normal form. 57/1053 useless extension candidates. Maximal degree in co-relation 10694. Up to 403 conditions per place. [2021-03-26 08:09:14,768 INFO L142 LiptonReduction]: Number of co-enabled transitions 1792 [2021-03-26 08:09:14,840 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:09:14,840 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:09:14,840 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 214 [2021-03-26 08:09:14,841 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 457 transitions, 14465 flow [2021-03-26 08:09:14,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:14,841 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:14,841 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:15,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:15,041 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:15,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:15,041 INFO L82 PathProgramCache]: Analyzing trace with hash 228054957, now seen corresponding path program 1 times [2021-03-26 08:09:15,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:15,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480928249] [2021-03-26 08:09:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:15,055 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:15,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,060 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:15,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,064 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:15,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:15,069 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:15,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:15,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:15,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:15,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480928249] [2021-03-26 08:09:15,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760144802] [2021-03-26 08:09:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:15,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:15,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:15,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:15,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:15,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:15,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:15,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:15,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:15,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:15,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:15,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:15,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:15,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,156 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:15,156 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:15,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:15,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:15,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:15,166 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 08:09:15,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 08:09:15,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 08:09:15,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:15,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:15,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:15,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:15,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:15,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:15,186 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:15,187 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:15,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:15,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:15,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:15,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823648337] [2021-03-26 08:09:15,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:15,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:15,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:15,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:15,201 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 320 [2021-03-26 08:09:15,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 457 transitions, 14465 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) [2021-03-26 08:09:15,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:15,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 320 [2021-03-26 08:09:15,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:16,071 INFO L129 PetriNetUnfolder]: 306/1006 cut-off events. [2021-03-26 08:09:16,071 INFO L130 PetriNetUnfolder]: For 36365/36712 co-relation queries the response was YES. [2021-03-26 08:09:16,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11426 conditions, 1006 events. 306/1006 cut-off events. For 36365/36712 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8563 event pairs, 0 based on Foata normal form. 39/1041 useless extension candidates. Maximal degree in co-relation 11330. Up to 405 conditions per place. [2021-03-26 08:09:16,083 INFO L132 encePairwiseOnDemand]: 212/320 looper letters, 248 selfloop transitions, 214 changer transitions 0/474 dead transitions. [2021-03-26 08:09:16,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 474 transitions, 15785 flow [2021-03-26 08:09:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-26 08:09:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-26 08:09:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1524 transitions. [2021-03-26 08:09:16,084 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2801470588235294 [2021-03-26 08:09:16,085 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1524 transitions. [2021-03-26 08:09:16,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1524 transitions. [2021-03-26 08:09:16,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:16,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1524 transitions. [2021-03-26 08:09:16,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 89.6470588235294) internal successors, (1524), 17 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) [2021-03-26 08:09:16,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 320.0) internal successors, (5760), 18 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:16,088 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 320.0) internal successors, (5760), 18 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:16,088 INFO L185 Difference]: Start difference. First operand has 270 places, 457 transitions, 14465 flow. Second operand 17 states and 1524 transitions. [2021-03-26 08:09:16,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 474 transitions, 15785 flow [2021-03-26 08:09:16,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 474 transitions, 15552 flow, removed 7 selfloop flow, removed 12 redundant places. [2021-03-26 08:09:16,261 INFO L241 Difference]: Finished difference. Result has 275 places, 460 transitions, 14926 flow [2021-03-26 08:09:16,261 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=14232, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=14926, PETRI_PLACES=275, PETRI_TRANSITIONS=460} [2021-03-26 08:09:16,261 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2021-03-26 08:09:16,261 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:16,262 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 460 transitions, 14926 flow [2021-03-26 08:09:16,262 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 460 transitions, 14926 flow [2021-03-26 08:09:16,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 275 places, 460 transitions, 14926 flow [2021-03-26 08:09:16,395 INFO L129 PetriNetUnfolder]: 307/1006 cut-off events. [2021-03-26 08:09:16,395 INFO L130 PetriNetUnfolder]: For 37016/37361 co-relation queries the response was YES. [2021-03-26 08:09:16,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11016 conditions, 1006 events. 307/1006 cut-off events. For 37016/37361 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8697 event pairs, 0 based on Foata normal form. 61/1060 useless extension candidates. Maximal degree in co-relation 10922. Up to 405 conditions per place. [2021-03-26 08:09:16,412 INFO L142 LiptonReduction]: Number of co-enabled transitions 1800 [2021-03-26 08:09:16,481 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:09:16,481 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:09:16,482 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 221 [2021-03-26 08:09:16,482 INFO L480 AbstractCegarLoop]: Abstraction has has 275 places, 460 transitions, 14926 flow [2021-03-26 08:09:16,482 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) [2021-03-26 08:09:16,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:16,482 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:16,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-03-26 08:09:16,683 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:16,683 INFO L82 PathProgramCache]: Analyzing trace with hash 228173315, now seen corresponding path program 1 times [2021-03-26 08:09:16,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:16,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036972307] [2021-03-26 08:09:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:16,693 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:16,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,696 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:16,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,701 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:16,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:16,707 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:16,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,713 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:16,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:16,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036972307] [2021-03-26 08:09:16,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953005983] [2021-03-26 08:09:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:16,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:16,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:16,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:16,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:16,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:16,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:16,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:16,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:16,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,782 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:16,783 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:16,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:16,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:16,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:16,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:16,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:16,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:16,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 08:09:16,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:16,817 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-26 08:09:16,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,818 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-26 08:09:16,819 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,820 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-26 08:09:16,821 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-26 08:09:16,821 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-26 08:09:16,821 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,822 INFO L142 QuantifierPusher]: treesize reduction -4, result has 105.7 percent of original size [2021-03-26 08:09:16,854 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:16,884 INFO L147 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size 2624 [2021-03-26 08:09:16,889 INFO L147 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size 2624 [2021-03-26 08:09:16,894 INFO L142 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size [2021-03-26 08:09:16,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2624 [2021-03-26 08:09:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:16,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:16,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:16,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621818658] [2021-03-26 08:09:16,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:16,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:16,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:16,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:16,933 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 320 [2021-03-26 08:09:16,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 460 transitions, 14926 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:16,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:16,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 320 [2021-03-26 08:09:16,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:18,029 INFO L129 PetriNetUnfolder]: 329/1077 cut-off events. [2021-03-26 08:09:18,029 INFO L130 PetriNetUnfolder]: For 44556/44936 co-relation queries the response was YES. [2021-03-26 08:09:18,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12424 conditions, 1077 events. 329/1077 cut-off events. For 44556/44936 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9310 event pairs, 0 based on Foata normal form. 51/1124 useless extension candidates. Maximal degree in co-relation 12328. Up to 447 conditions per place. [2021-03-26 08:09:18,041 INFO L132 encePairwiseOnDemand]: 157/320 looper letters, 130 selfloop transitions, 358 changer transitions 0/500 dead transitions. [2021-03-26 08:09:18,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 500 transitions, 17195 flow [2021-03-26 08:09:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-26 08:09:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-03-26 08:09:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1948 transitions. [2021-03-26 08:09:18,043 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2767045454545455 [2021-03-26 08:09:18,043 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1948 transitions. [2021-03-26 08:09:18,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1948 transitions. [2021-03-26 08:09:18,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:18,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1948 transitions. [2021-03-26 08:09:18,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 88.54545454545455) internal successors, (1948), 22 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:18,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 320.0) internal successors, (7360), 23 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:18,048 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 320.0) internal successors, (7360), 23 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:18,048 INFO L185 Difference]: Start difference. First operand has 275 places, 460 transitions, 14926 flow. Second operand 22 states and 1948 transitions. [2021-03-26 08:09:18,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 500 transitions, 17195 flow [2021-03-26 08:09:18,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 500 transitions, 16922 flow, removed 13 selfloop flow, removed 11 redundant places. [2021-03-26 08:09:18,237 INFO L241 Difference]: Finished difference. Result has 289 places, 495 transitions, 16970 flow [2021-03-26 08:09:18,238 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=14669, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16970, PETRI_PLACES=289, PETRI_TRANSITIONS=495} [2021-03-26 08:09:18,238 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2021-03-26 08:09:18,238 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:18,238 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 495 transitions, 16970 flow [2021-03-26 08:09:18,238 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 495 transitions, 16970 flow [2021-03-26 08:09:18,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 495 transitions, 16970 flow [2021-03-26 08:09:18,396 INFO L129 PetriNetUnfolder]: 329/1077 cut-off events. [2021-03-26 08:09:18,397 INFO L130 PetriNetUnfolder]: For 43167/43502 co-relation queries the response was YES. [2021-03-26 08:09:18,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12315 conditions, 1077 events. 329/1077 cut-off events. For 43167/43502 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9479 event pairs, 0 based on Foata normal form. 82/1153 useless extension candidates. Maximal degree in co-relation 12217. Up to 445 conditions per place. [2021-03-26 08:09:18,414 INFO L142 LiptonReduction]: Number of co-enabled transitions 1924 [2021-03-26 08:09:18,644 INFO L154 LiptonReduction]: Checked pairs total: 1268 [2021-03-26 08:09:18,645 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 08:09:18,645 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 407 [2021-03-26 08:09:18,645 INFO L480 AbstractCegarLoop]: Abstraction has has 289 places, 493 transitions, 16929 flow [2021-03-26 08:09:18,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:18,645 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:18,646 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:18,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:18,849 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:18,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1477968262, now seen corresponding path program 1 times [2021-03-26 08:09:18,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:18,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731194591] [2021-03-26 08:09:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:18,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:18,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:18,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:18,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:18,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731194591] [2021-03-26 08:09:18,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:18,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:18,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726798937] [2021-03-26 08:09:18,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 08:09:18,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:18,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 08:09:18,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 08:09:18,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 324 [2021-03-26 08:09:18,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 493 transitions, 16929 flow. Second operand has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:18,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:18,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 324 [2021-03-26 08:09:18,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:19,296 INFO L129 PetriNetUnfolder]: 308/1019 cut-off events. [2021-03-26 08:09:19,296 INFO L130 PetriNetUnfolder]: For 47530/48004 co-relation queries the response was YES. [2021-03-26 08:09:19,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12548 conditions, 1019 events. 308/1019 cut-off events. For 47530/48004 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8735 event pairs, 0 based on Foata normal form. 134/1149 useless extension candidates. Maximal degree in co-relation 12448. Up to 432 conditions per place. [2021-03-26 08:09:19,308 INFO L132 encePairwiseOnDemand]: 310/324 looper letters, 162 selfloop transitions, 11 changer transitions 0/474 dead transitions. [2021-03-26 08:09:19,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 474 transitions, 16654 flow [2021-03-26 08:09:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 08:09:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 08:09:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 886 transitions. [2021-03-26 08:09:19,309 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.683641975308642 [2021-03-26 08:09:19,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 886 transitions. [2021-03-26 08:09:19,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 886 transitions. [2021-03-26 08:09:19,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:19,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 886 transitions. [2021-03-26 08:09:19,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:19,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:19,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:19,311 INFO L185 Difference]: Start difference. First operand has 289 places, 493 transitions, 16929 flow. Second operand 4 states and 886 transitions. [2021-03-26 08:09:19,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 474 transitions, 16654 flow [2021-03-26 08:09:19,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 474 transitions, 16210 flow, removed 135 selfloop flow, removed 16 redundant places. [2021-03-26 08:09:19,509 INFO L241 Difference]: Finished difference. Result has 278 places, 473 transitions, 15910 flow [2021-03-26 08:09:19,509 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=15820, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=15910, PETRI_PLACES=278, PETRI_TRANSITIONS=473} [2021-03-26 08:09:19,510 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2021-03-26 08:09:19,510 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:19,510 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 473 transitions, 15910 flow [2021-03-26 08:09:19,510 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 473 transitions, 15910 flow [2021-03-26 08:09:19,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 278 places, 473 transitions, 15910 flow [2021-03-26 08:09:19,653 INFO L129 PetriNetUnfolder]: 307/1020 cut-off events. [2021-03-26 08:09:19,653 INFO L130 PetriNetUnfolder]: For 41769/41977 co-relation queries the response was YES. [2021-03-26 08:09:19,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12081 conditions, 1020 events. 307/1020 cut-off events. For 41769/41977 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8869 event pairs, 0 based on Foata normal form. 57/1071 useless extension candidates. Maximal degree in co-relation 11983. Up to 409 conditions per place. [2021-03-26 08:09:19,668 INFO L142 LiptonReduction]: Number of co-enabled transitions 1822 [2021-03-26 08:09:19,895 INFO L154 LiptonReduction]: Checked pairs total: 309 [2021-03-26 08:09:19,895 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:09:19,895 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 385 [2021-03-26 08:09:19,895 INFO L480 AbstractCegarLoop]: Abstraction has has 278 places, 473 transitions, 15938 flow [2021-03-26 08:09:19,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:19,895 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:19,896 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:19,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-26 08:09:19,896 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:19,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash 929407860, now seen corresponding path program 1 times [2021-03-26 08:09:19,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:19,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685703833] [2021-03-26 08:09:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:19,907 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:19,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,911 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:19,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,915 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:19,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:19,920 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:19,921 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:19,930 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:19,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:19,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685703833] [2021-03-26 08:09:19,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819781525] [2021-03-26 08:09:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-26 08:09:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:19,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:19,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:19,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:20,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:20,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:20,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:20,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:20,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:20,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:20,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:20,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:20,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:20,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:20,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:20,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:20,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:20,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:20,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:20,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:20,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:20,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:20,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:20,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:20,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:20,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:20,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:20,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:20,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:20,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:20,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:20,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:09:20,049 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-03-26 08:09:20,050 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:20,050 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:20,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:20,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:20,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:20,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396621741] [2021-03-26 08:09:20,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:20,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:20,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:20,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:20,060 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 327 [2021-03-26 08:09:20,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 473 transitions, 15938 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) [2021-03-26 08:09:20,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:20,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 327 [2021-03-26 08:09:20,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:21,168 INFO L129 PetriNetUnfolder]: 330/1081 cut-off events. [2021-03-26 08:09:21,169 INFO L130 PetriNetUnfolder]: For 51661/51980 co-relation queries the response was YES. [2021-03-26 08:09:21,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13524 conditions, 1081 events. 330/1081 cut-off events. For 51661/51980 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9212 event pairs, 0 based on Foata normal form. 54/1131 useless extension candidates. Maximal degree in co-relation 13424. Up to 444 conditions per place. [2021-03-26 08:09:21,181 INFO L132 encePairwiseOnDemand]: 172/327 looper letters, 168 selfloop transitions, 342 changer transitions 0/522 dead transitions. [2021-03-26 08:09:21,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 522 transitions, 18487 flow [2021-03-26 08:09:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-26 08:09:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-03-26 08:09:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2043 transitions. [2021-03-26 08:09:21,183 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2716394096529717 [2021-03-26 08:09:21,183 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2043 transitions. [2021-03-26 08:09:21,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2043 transitions. [2021-03-26 08:09:21,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:21,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2043 transitions. [2021-03-26 08:09:21,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 88.82608695652173) internal successors, (2043), 23 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:21,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 327.0) internal successors, (7848), 24 states have internal predecessors, (7848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:21,188 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 327.0) internal successors, (7848), 24 states have internal predecessors, (7848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:21,188 INFO L185 Difference]: Start difference. First operand has 278 places, 473 transitions, 15938 flow. Second operand 23 states and 2043 transitions. [2021-03-26 08:09:21,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 522 transitions, 18487 flow [2021-03-26 08:09:21,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 522 transitions, 18480 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-26 08:09:21,389 INFO L241 Difference]: Finished difference. Result has 305 places, 509 transitions, 18323 flow [2021-03-26 08:09:21,389 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=15903, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=18323, PETRI_PLACES=305, PETRI_TRANSITIONS=509} [2021-03-26 08:09:21,390 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2021-03-26 08:09:21,390 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:21,390 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 509 transitions, 18323 flow [2021-03-26 08:09:21,390 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 509 transitions, 18323 flow [2021-03-26 08:09:21,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 305 places, 509 transitions, 18323 flow [2021-03-26 08:09:21,541 INFO L129 PetriNetUnfolder]: 329/1082 cut-off events. [2021-03-26 08:09:21,541 INFO L130 PetriNetUnfolder]: For 49643/49968 co-relation queries the response was YES. [2021-03-26 08:09:21,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13578 conditions, 1082 events. 329/1082 cut-off events. For 49643/49968 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9505 event pairs, 0 based on Foata normal form. 92/1168 useless extension candidates. Maximal degree in co-relation 13473. Up to 444 conditions per place. [2021-03-26 08:09:21,558 INFO L142 LiptonReduction]: Number of co-enabled transitions 1908 [2021-03-26 08:09:21,808 INFO L154 LiptonReduction]: Checked pairs total: 616 [2021-03-26 08:09:21,808 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:09:21,808 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 418 [2021-03-26 08:09:21,808 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 509 transitions, 18330 flow [2021-03-26 08:09:21,808 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) [2021-03-26 08:09:21,809 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:21,809 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:22,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-03-26 08:09:22,009 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:22,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2072864960, now seen corresponding path program 1 times [2021-03-26 08:09:22,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:22,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063276004] [2021-03-26 08:09:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:22,020 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:22,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,023 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:22,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,031 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:09:22,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:22,037 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:22,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:22,043 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:22,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:22,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063276004] [2021-03-26 08:09:22,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399891121] [2021-03-26 08:09:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:22,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:22,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:22,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:22,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:22,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:22,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:22,113 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:22,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:22,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:22,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:22,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:22,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:22,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:22,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:22,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:22,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:22,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:22,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,135 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:22,135 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:22,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:22,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:22,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:22,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:22,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,152 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:22,152 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:22,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:22,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:22,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:22,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063832584] [2021-03-26 08:09:22,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:22,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:22,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:22,165 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 330 [2021-03-26 08:09:22,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 509 transitions, 18330 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) [2021-03-26 08:09:22,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:22,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 330 [2021-03-26 08:09:22,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:23,108 INFO L129 PetriNetUnfolder]: 329/1082 cut-off events. [2021-03-26 08:09:23,108 INFO L130 PetriNetUnfolder]: For 51356/51718 co-relation queries the response was YES. [2021-03-26 08:09:23,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14250 conditions, 1082 events. 329/1082 cut-off events. For 51356/51718 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9396 event pairs, 0 based on Foata normal form. 30/1108 useless extension candidates. Maximal degree in co-relation 14143. Up to 476 conditions per place. [2021-03-26 08:09:23,121 INFO L132 encePairwiseOnDemand]: 232/330 looper letters, 325 selfloop transitions, 187 changer transitions 0/524 dead transitions. [2021-03-26 08:09:23,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 524 transitions, 19703 flow [2021-03-26 08:09:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-26 08:09:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-26 08:09:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1369 transitions. [2021-03-26 08:09:23,123 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.27656565656565657 [2021-03-26 08:09:23,123 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1369 transitions. [2021-03-26 08:09:23,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1369 transitions. [2021-03-26 08:09:23,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:23,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1369 transitions. [2021-03-26 08:09:23,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.26666666666667) internal successors, (1369), 15 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:23,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 330.0) internal successors, (5280), 16 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:23,126 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 330.0) internal successors, (5280), 16 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:23,126 INFO L185 Difference]: Start difference. First operand has 305 places, 509 transitions, 18330 flow. Second operand 15 states and 1369 transitions. [2021-03-26 08:09:23,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 524 transitions, 19703 flow [2021-03-26 08:09:23,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 524 transitions, 18870 flow, removed 265 selfloop flow, removed 14 redundant places. [2021-03-26 08:09:23,389 INFO L241 Difference]: Finished difference. Result has 306 places, 510 transitions, 18048 flow [2021-03-26 08:09:23,389 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=17497, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18048, PETRI_PLACES=306, PETRI_TRANSITIONS=510} [2021-03-26 08:09:23,389 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2021-03-26 08:09:23,390 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:23,390 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 510 transitions, 18048 flow [2021-03-26 08:09:23,390 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 510 transitions, 18048 flow [2021-03-26 08:09:23,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 306 places, 510 transitions, 18048 flow [2021-03-26 08:09:23,563 INFO L129 PetriNetUnfolder]: 329/1083 cut-off events. [2021-03-26 08:09:23,563 INFO L130 PetriNetUnfolder]: For 48694/48996 co-relation queries the response was YES. [2021-03-26 08:09:23,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13414 conditions, 1083 events. 329/1083 cut-off events. For 48694/48996 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9570 event pairs, 0 based on Foata normal form. 77/1154 useless extension candidates. Maximal degree in co-relation 13309. Up to 437 conditions per place. [2021-03-26 08:09:23,584 INFO L142 LiptonReduction]: Number of co-enabled transitions 1910 [2021-03-26 08:09:23,763 INFO L154 LiptonReduction]: Checked pairs total: 307 [2021-03-26 08:09:23,763 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:23,763 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 373 [2021-03-26 08:09:23,763 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 510 transitions, 18050 flow [2021-03-26 08:09:23,764 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) [2021-03-26 08:09:23,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:23,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:23,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-03-26 08:09:23,964 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:23,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2094862405, now seen corresponding path program 1 times [2021-03-26 08:09:23,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:23,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996881459] [2021-03-26 08:09:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:23,976 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:23,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,980 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:23,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:23,985 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:23,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,990 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:23,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,997 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:23,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:24,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996881459] [2021-03-26 08:09:24,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944501979] [2021-03-26 08:09:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:24,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:24,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:24,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:24,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:24,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:24,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:24,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:24,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:24,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:24,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,079 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:24,079 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:24,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:24,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:24,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:24,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:24,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:24,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:24,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:24,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-26 08:09:24,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:24,107 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-26 08:09:24,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,109 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-26 08:09:24,111 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,112 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-26 08:09:24,115 INFO L147 QuantifierPusher]: treesize reduction -4, result has 107.1 percent of original size 60 [2021-03-26 08:09:24,115 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-03-26 08:09:24,116 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:24,116 INFO L142 QuantifierPusher]: treesize reduction -4, result has 105.7 percent of original size [2021-03-26 08:09:24,128 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:24,152 INFO L147 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size 2624 [2021-03-26 08:09:24,156 INFO L147 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size 2624 [2021-03-26 08:09:24,159 INFO L142 QuantifierPusher]: treesize reduction 32, result has 98.8 percent of original size [2021-03-26 08:09:24,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2624 [2021-03-26 08:09:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:24,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:24,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:24,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673861106] [2021-03-26 08:09:24,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:24,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:24,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:24,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:24,204 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 331 [2021-03-26 08:09:24,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 510 transitions, 18050 flow. Second operand has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:24,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:24,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 331 [2021-03-26 08:09:24,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:25,305 INFO L129 PetriNetUnfolder]: 330/1086 cut-off events. [2021-03-26 08:09:25,305 INFO L130 PetriNetUnfolder]: For 50362/50708 co-relation queries the response was YES. [2021-03-26 08:09:25,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14134 conditions, 1086 events. 330/1086 cut-off events. For 50362/50708 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9438 event pairs, 0 based on Foata normal form. 30/1112 useless extension candidates. Maximal degree in co-relation 14027. Up to 440 conditions per place. [2021-03-26 08:09:25,317 INFO L132 encePairwiseOnDemand]: 165/331 looper letters, 144 selfloop transitions, 361 changer transitions 0/517 dead transitions. [2021-03-26 08:09:25,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 517 transitions, 19294 flow [2021-03-26 08:09:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-26 08:09:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-03-26 08:09:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1945 transitions. [2021-03-26 08:09:25,319 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2670969513869816 [2021-03-26 08:09:25,319 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1945 transitions. [2021-03-26 08:09:25,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1945 transitions. [2021-03-26 08:09:25,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:25,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1945 transitions. [2021-03-26 08:09:25,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 88.4090909090909) internal successors, (1945), 22 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:25,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 331.0) internal successors, (7613), 23 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:25,324 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 331.0) internal successors, (7613), 23 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:25,324 INFO L185 Difference]: Start difference. First operand has 306 places, 510 transitions, 18050 flow. Second operand 22 states and 1945 transitions. [2021-03-26 08:09:25,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 517 transitions, 19294 flow [2021-03-26 08:09:25,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 517 transitions, 19038 flow, removed 8 selfloop flow, removed 12 redundant places. [2021-03-26 08:09:25,593 INFO L241 Difference]: Finished difference. Result has 317 places, 513 transitions, 18724 flow [2021-03-26 08:09:25,593 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=17794, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=18724, PETRI_PLACES=317, PETRI_TRANSITIONS=513} [2021-03-26 08:09:25,593 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2021-03-26 08:09:25,593 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:25,593 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 513 transitions, 18724 flow [2021-03-26 08:09:25,594 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 513 transitions, 18724 flow [2021-03-26 08:09:25,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 317 places, 513 transitions, 18724 flow [2021-03-26 08:09:25,756 INFO L129 PetriNetUnfolder]: 331/1087 cut-off events. [2021-03-26 08:09:25,757 INFO L130 PetriNetUnfolder]: For 49196/49505 co-relation queries the response was YES. [2021-03-26 08:09:25,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13777 conditions, 1087 events. 331/1087 cut-off events. For 49196/49505 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9614 event pairs, 0 based on Foata normal form. 79/1160 useless extension candidates. Maximal degree in co-relation 13670. Up to 440 conditions per place. [2021-03-26 08:09:25,775 INFO L142 LiptonReduction]: Number of co-enabled transitions 1918 [2021-03-26 08:09:25,975 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 08:09:25,975 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:25,975 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 382 [2021-03-26 08:09:25,975 INFO L480 AbstractCegarLoop]: Abstraction has has 317 places, 513 transitions, 18722 flow [2021-03-26 08:09:25,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:25,976 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:25,976 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:26,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-03-26 08:09:26,180 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:26,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:26,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1876886783, now seen corresponding path program 1 times [2021-03-26 08:09:26,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:26,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529448751] [2021-03-26 08:09:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:26,190 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-26 08:09:26,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,194 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:26,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:26,204 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:26,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:26,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:26,211 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:26,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:26,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:26,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529448751] [2021-03-26 08:09:26,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830007147] [2021-03-26 08:09:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:26,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-26 08:09:26,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:26,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:26,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:26,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:26,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:26,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:26,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:26,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:26,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,304 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:26,304 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:26,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:26,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:26,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:26,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:26,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:26,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:26,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 08:09:26,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 08:09:26,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 08:09:26,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 08:09:26,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,332 INFO L147 QuantifierPusher]: treesize reduction -1, result has 104.8 percent of original size 22 [2021-03-26 08:09:26,332 INFO L142 QuantifierPusher]: treesize reduction -1, result has 104.8 percent of original size [2021-03-26 08:09:26,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:26,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 08:09:26,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-26 08:09:26,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-26 08:09:26,351 INFO L142 QuantifierPusher]: treesize reduction 1, result has 98.7 percent of original size [2021-03-26 08:09:26,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:26,353 INFO L147 QuantifierPusher]: treesize reduction -4, result has 108.7 percent of original size 50 [2021-03-26 08:09:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:26,354 INFO L142 QuantifierPusher]: treesize reduction -4, result has 107.5 percent of original size [2021-03-26 08:09:26,377 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:26,511 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:26,912 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:27,548 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown