/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_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 08:08:45,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 08:08:45,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 08:08:45,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 08:08:45,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 08:08:45,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 08:08:45,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 08:08:45,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 08:08:45,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 08:08:45,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 08:08:45,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 08:08:45,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 08:08:45,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 08:08:45,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 08:08:45,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 08:08:45,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 08:08:45,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 08:08:45,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 08:08:45,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 08:08:45,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 08:08:45,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 08:08:45,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 08:08:45,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 08:08:45,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 08:08:45,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 08:08:45,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 08:08:45,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 08:08:45,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 08:08:45,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 08:08:45,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 08:08:45,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 08:08:45,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 08:08:45,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 08:08:45,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 08:08:45,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 08:08:45,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 08:08:45,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 08:08:45,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 08:08:45,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 08:08:45,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 08:08:45,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 08:08:45,850 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 08:08:45,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 08:08:45,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 08:08:45,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 08:08:45,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 08:08:45,869 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 08:08:45,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 08:08:45,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 08:08:45,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 08:08:45,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 08:08:45,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 08:08:45,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 08:08:45,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 08:08:45,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 08:08:45,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 08:08:45,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 08:08:45,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 08:08:45,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 08:08:45,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 08:08:45,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 08:08:45,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 08:08:45,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 08:08:45,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 08:08:45,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 08:08:45,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 08:08:45,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 08:08:45,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 08:08:45,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 08:08:45,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 08:08:45,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 08:08:45,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 08:08:45,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 08:08:46,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 08:08:46,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 08:08:46,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 08:08:46,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 08:08:46,201 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 08:08:46,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2021-03-26 08:08:46,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1b1d0ec/59a84e6dd25745048f04aec29007ff45/FLAG748e0195a [2021-03-26 08:08:46,786 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 08:08:46,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2021-03-26 08:08:46,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1b1d0ec/59a84e6dd25745048f04aec29007ff45/FLAG748e0195a [2021-03-26 08:08:47,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1b1d0ec/59a84e6dd25745048f04aec29007ff45 [2021-03-26 08:08:47,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 08:08:47,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 08:08:47,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 08:08:47,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 08:08:47,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 08:08:47,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29708ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47, skipping insertion in model container [2021-03-26 08:08:47,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 08:08:47,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 08:08:47,418 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i[30286,30299] [2021-03-26 08:08:47,429 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i[31040,31053] [2021-03-26 08:08:47,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:08:47,436 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 08:08:47,461 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i[30286,30299] [2021-03-26 08:08:47,465 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i[31040,31053] [2021-03-26 08:08:47,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:08:47,516 INFO L208 MainTranslator]: Completed translation [2021-03-26 08:08:47,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47 WrapperNode [2021-03-26 08:08:47,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 08:08:47,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 08:08:47,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 08:08:47,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 08:08:47,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 08:08:47,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 08:08:47,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 08:08:47,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 08:08:47,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... [2021-03-26 08:08:47,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 08:08:47,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 08:08:47,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 08:08:47,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 08:08:47,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 08:08:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-03-26 08:08:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-03-26 08:08:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-03-26 08:08:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-03-26 08:08:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 08:08:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 08:08:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 08:08:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 08:08:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 08:08:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 08:08:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 08:08:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 08:08:47,650 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 08:08:48,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 08:08:48,024 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-26 08:08:48,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:08:48 BoogieIcfgContainer [2021-03-26 08:08:48,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 08:08:48,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 08:08:48,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 08:08:48,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 08:08:48,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 08:08:47" (1/3) ... [2021-03-26 08:08:48,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46afbfec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:08:48, skipping insertion in model container [2021-03-26 08:08:48,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:08:47" (2/3) ... [2021-03-26 08:08:48,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46afbfec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:08:48, skipping insertion in model container [2021-03-26 08:08:48,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:08:48" (3/3) ... [2021-03-26 08:08:48,032 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-2.i [2021-03-26 08:08:48,037 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 08:08:48,041 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 08:08:48,042 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 08:08:48,073 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,073 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,073 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,073 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,074 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,074 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,074 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,075 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,076 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,076 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,076 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,077 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,077 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,077 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,078 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,078 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,078 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,079 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,079 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,079 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,079 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,079 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,079 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,080 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,080 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,081 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,083 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,084 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,084 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,084 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,084 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,084 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,085 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,088 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,088 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,088 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,089 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,089 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,089 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,094 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,094 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,094 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,094 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,094 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,095 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:08:48,097 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 08:08:48,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 08:08:48,141 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 08:08:48,141 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 08:08:48,141 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 08:08:48,141 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 08:08:48,142 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 08:08:48,142 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 08:08:48,142 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 08:08:48,142 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 08:08:48,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 134 flow [2021-03-26 08:08:48,196 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-26 08:08:48,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:08:48,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 60 events. 5/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 08:08:48,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 134 flow [2021-03-26 08:08:48,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 126 flow [2021-03-26 08:08:48,219 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:48,229 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-26 08:08:48,233 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 126 flow [2021-03-26 08:08:48,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 126 flow [2021-03-26 08:08:48,257 INFO L129 PetriNetUnfolder]: 5/60 cut-off events. [2021-03-26 08:08:48,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:08:48,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 60 events. 5/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 08:08:48,261 INFO L142 LiptonReduction]: Number of co-enabled transitions 1080 [2021-03-26 08:08:49,596 INFO L154 LiptonReduction]: Checked pairs total: 529 [2021-03-26 08:08:49,596 INFO L156 LiptonReduction]: Total number of compositions: 36 [2021-03-26 08:08:49,599 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1382 [2021-03-26 08:08:49,606 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-26 08:08:49,606 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:08:49,606 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:49,607 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:49,607 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:49,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:49,611 INFO L82 PathProgramCache]: Analyzing trace with hash 616202235, now seen corresponding path program 1 times [2021-03-26 08:08:49,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:49,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695645923] [2021-03-26 08:08:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [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 1 [2021-03-26 08:08:49,813 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 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 08:08:49,820 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 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 08:08:49,827 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 08:08:49,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695645923] [2021-03-26 08:08:49,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:49,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 08:08:49,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274195157] [2021-03-26 08:08:49,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 08:08:49,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:49,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 08:08:49,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 08:08:49,847 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2021-03-26 08:08:49,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:49,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:49,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2021-03-26 08:08:49,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:49,905 INFO L129 PetriNetUnfolder]: 40/129 cut-off events. [2021-03-26 08:08:49,905 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:08:49,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 129 events. 40/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 498 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 188. Up to 51 conditions per place. [2021-03-26 08:08:49,907 INFO L132 encePairwiseOnDemand]: 93/98 looper letters, 5 selfloop transitions, 7 changer transitions 8/37 dead transitions. [2021-03-26 08:08:49,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 116 flow [2021-03-26 08:08:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:08:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:08:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2021-03-26 08:08:49,918 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-03-26 08:08:49,919 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2021-03-26 08:08:49,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2021-03-26 08:08:49,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:49,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2021-03-26 08:08:49,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:49,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:49,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:49,940 INFO L185 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 5 states and 385 transitions. [2021-03-26 08:08:49,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 116 flow [2021-03-26 08:08:49,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 08:08:49,944 INFO L241 Difference]: Finished difference. Result has 36 places, 28 transitions, 95 flow [2021-03-26 08:08:49,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2021-03-26 08:08:49,948 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-26 08:08:49,948 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:49,948 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 28 transitions, 95 flow [2021-03-26 08:08:49,949 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 28 transitions, 95 flow [2021-03-26 08:08:49,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 95 flow [2021-03-26 08:08:49,959 INFO L129 PetriNetUnfolder]: 14/65 cut-off events. [2021-03-26 08:08:49,959 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-03-26 08:08:49,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 65 events. 14/65 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 106. Up to 16 conditions per place. [2021-03-26 08:08:49,960 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-26 08:08:50,147 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-26 08:08:50,408 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-03-26 08:08:50,740 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-26 08:08:51,033 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-26 08:08:51,037 INFO L154 LiptonReduction]: Checked pairs total: 83 [2021-03-26 08:08:51,037 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 08:08:51,037 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1089 [2021-03-26 08:08:51,038 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 83 flow [2021-03-26 08:08:51,038 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 08:08:51,039 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:51,039 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:51,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 08:08:51,039 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1147891409, now seen corresponding path program 1 times [2021-03-26 08:08:51,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:51,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786769971] [2021-03-26 08:08:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:51,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:51,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:08:51,091 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:08:51,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,104 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-26 08:08:51,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:51,120 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:51,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,127 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 08:08:51,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786769971] [2021-03-26 08:08:51,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:51,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:51,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592661226] [2021-03-26 08:08:51,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:08:51,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:51,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:08:51,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 08:08:51,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 106 [2021-03-26 08:08:51,133 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 08:08:51,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:51,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 106 [2021-03-26 08:08:51,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:51,202 INFO L129 PetriNetUnfolder]: 38/104 cut-off events. [2021-03-26 08:08:51,202 INFO L130 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2021-03-26 08:08:51,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 104 events. 38/104 cut-off events. For 87/93 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 378 event pairs, 2 based on Foata normal form. 8/95 useless extension candidates. Maximal degree in co-relation 262. Up to 54 conditions per place. [2021-03-26 08:08:51,205 INFO L132 encePairwiseOnDemand]: 99/106 looper letters, 5 selfloop transitions, 14 changer transitions 0/30 dead transitions. [2021-03-26 08:08:51,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 160 flow [2021-03-26 08:08:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 560 transitions. [2021-03-26 08:08:51,212 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2021-03-26 08:08:51,212 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 560 transitions. [2021-03-26 08:08:51,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 560 transitions. [2021-03-26 08:08:51,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:51,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 560 transitions. [2021-03-26 08:08:51,214 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 08:08:51,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,217 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,217 INFO L185 Difference]: Start difference. First operand has 26 places, 22 transitions, 83 flow. Second operand 7 states and 560 transitions. [2021-03-26 08:08:51,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 160 flow [2021-03-26 08:08:51,218 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 08:08:51,219 INFO L241 Difference]: Finished difference. Result has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:51,219 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2021-03-26 08:08:51,220 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-26 08:08:51,220 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:51,220 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:51,221 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:51,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:51,238 INFO L129 PetriNetUnfolder]: 26/89 cut-off events. [2021-03-26 08:08:51,239 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2021-03-26 08:08:51,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 89 events. 26/89 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 337 event pairs, 1 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 250. Up to 29 conditions per place. [2021-03-26 08:08:51,243 INFO L142 LiptonReduction]: Number of co-enabled transitions 204 [2021-03-26 08:08:51,317 INFO L154 LiptonReduction]: Checked pairs total: 75 [2021-03-26 08:08:51,318 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:08:51,318 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 98 [2021-03-26 08:08:51,319 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 168 flow [2021-03-26 08:08:51,319 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 08:08:51,319 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:51,319 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:51,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 08:08:51,320 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1327699939, now seen corresponding path program 1 times [2021-03-26 08:08:51,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:51,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221909019] [2021-03-26 08:08:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:51,359 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:51,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,369 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:08:51,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:51,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:51,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,390 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 08:08:51,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221909019] [2021-03-26 08:08:51,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:51,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 08:08:51,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532939560] [2021-03-26 08:08:51,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:08:51,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:51,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:08:51,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 08:08:51,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 111 [2021-03-26 08:08:51,394 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 08:08:51,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:51,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 111 [2021-03-26 08:08:51,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:51,446 INFO L129 PetriNetUnfolder]: 42/113 cut-off events. [2021-03-26 08:08:51,446 INFO L130 PetriNetUnfolder]: For 297/303 co-relation queries the response was YES. [2021-03-26 08:08:51,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 113 events. 42/113 cut-off events. For 297/303 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 447 event pairs, 4 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 396. Up to 62 conditions per place. [2021-03-26 08:08:51,448 INFO L132 encePairwiseOnDemand]: 101/111 looper letters, 12 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2021-03-26 08:08:51,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 236 flow [2021-03-26 08:08:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:08:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:08:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2021-03-26 08:08:51,450 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7207207207207207 [2021-03-26 08:08:51,450 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2021-03-26 08:08:51,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2021-03-26 08:08:51,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:51,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2021-03-26 08:08:51,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,453 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 168 flow. Second operand 5 states and 400 transitions. [2021-03-26 08:08:51,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 236 flow [2021-03-26 08:08:51,455 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 08:08:51,456 INFO L241 Difference]: Finished difference. Result has 38 places, 30 transitions, 178 flow [2021-03-26 08:08:51,456 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2021-03-26 08:08:51,456 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-26 08:08:51,457 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:51,457 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-26 08:08:51,457 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 30 transitions, 178 flow [2021-03-26 08:08:51,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 178 flow [2021-03-26 08:08:51,464 INFO L129 PetriNetUnfolder]: 32/105 cut-off events. [2021-03-26 08:08:51,464 INFO L130 PetriNetUnfolder]: For 184/185 co-relation queries the response was YES. [2021-03-26 08:08:51,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 105 events. 32/105 cut-off events. For 184/185 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 423 event pairs, 2 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 298. Up to 30 conditions per place. [2021-03-26 08:08:51,466 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-26 08:08:51,553 INFO L154 LiptonReduction]: Checked pairs total: 59 [2021-03-26 08:08:51,554 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:08:51,554 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-03-26 08:08:51,554 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 176 flow [2021-03-26 08:08:51,555 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 08:08:51,555 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:51,555 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:51,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 08:08:51,555 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1427106436, now seen corresponding path program 1 times [2021-03-26 08:08:51,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:51,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40566450] [2021-03-26 08:08:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:51,580 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:51,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,585 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:08:51,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:51,591 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:51,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,597 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 08:08:51,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40566450] [2021-03-26 08:08:51,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:51,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 08:08:51,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128409679] [2021-03-26 08:08:51,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:08:51,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:51,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:08:51,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 08:08:51,600 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 116 [2021-03-26 08:08:51,600 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 08:08:51,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:51,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 116 [2021-03-26 08:08:51,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:51,667 INFO L129 PetriNetUnfolder]: 35/98 cut-off events. [2021-03-26 08:08:51,667 INFO L130 PetriNetUnfolder]: For 259/265 co-relation queries the response was YES. [2021-03-26 08:08:51,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 98 events. 35/98 cut-off events. For 259/265 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 363 event pairs, 0 based on Foata normal form. 8/90 useless extension candidates. Maximal degree in co-relation 340. Up to 47 conditions per place. [2021-03-26 08:08:51,668 INFO L132 encePairwiseOnDemand]: 105/116 looper letters, 12 selfloop transitions, 16 changer transitions 0/38 dead transitions. [2021-03-26 08:08:51,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 299 flow [2021-03-26 08:08:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 561 transitions. [2021-03-26 08:08:51,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6908866995073891 [2021-03-26 08:08:51,671 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 561 transitions. [2021-03-26 08:08:51,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 561 transitions. [2021-03-26 08:08:51,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:51,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 561 transitions. [2021-03-26 08:08:51,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.14285714285714) internal successors, (561), 7 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,674 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:51,674 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 176 flow. Second operand 7 states and 561 transitions. [2021-03-26 08:08:51,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 299 flow [2021-03-26 08:08:51,676 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 08:08:51,677 INFO L241 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:51,677 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2021-03-26 08:08:51,677 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2021-03-26 08:08:51,678 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:51,678 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:51,678 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:51,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:51,685 INFO L129 PetriNetUnfolder]: 34/97 cut-off events. [2021-03-26 08:08:51,685 INFO L130 PetriNetUnfolder]: For 346/347 co-relation queries the response was YES. [2021-03-26 08:08:51,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 97 events. 34/97 cut-off events. For 346/347 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 376 event pairs, 0 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 347. Up to 28 conditions per place. [2021-03-26 08:08:51,687 INFO L142 LiptonReduction]: Number of co-enabled transitions 230 [2021-03-26 08:08:51,798 INFO L154 LiptonReduction]: Checked pairs total: 69 [2021-03-26 08:08:51,799 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:08:51,799 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 121 [2021-03-26 08:08:51,803 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 267 flow [2021-03-26 08:08:51,803 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 08:08:51,803 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:51,803 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:51,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 08:08:51,804 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1285636230, now seen corresponding path program 1 times [2021-03-26 08:08:51,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:51,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021479732] [2021-03-26 08:08:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:51,876 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:08:51,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,881 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-03-26 08:08:51,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:51,888 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-26 08:08:51,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:51,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:51,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,906 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 08:08:51,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021479732] [2021-03-26 08:08:51,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671343765] [2021-03-26 08:08:51,907 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 08:08:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:51,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:51,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:51,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:51,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:51,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:51,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:51,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:51,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:51,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:51,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:52,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:52,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:52,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:52,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:52,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:52,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:52,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:52,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:52,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:52,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:52,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:52,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:52,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:52,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:52,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:52,145 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 08:08:52,147 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:08:52,150 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:52,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:52,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:52,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:52,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:52,180 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 08:08:52,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:52,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:52,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599689159] [2021-03-26 08:08:52,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:52,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:52,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:52,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:52,184 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 121 [2021-03-26 08:08:52,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 267 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:52,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:52,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 121 [2021-03-26 08:08:52,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:52,375 INFO L129 PetriNetUnfolder]: 46/133 cut-off events. [2021-03-26 08:08:52,375 INFO L130 PetriNetUnfolder]: For 682/690 co-relation queries the response was YES. [2021-03-26 08:08:52,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 133 events. 46/133 cut-off events. For 682/690 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 529 event pairs, 0 based on Foata normal form. 9/118 useless extension candidates. Maximal degree in co-relation 556. Up to 59 conditions per place. [2021-03-26 08:08:52,377 INFO L132 encePairwiseOnDemand]: 108/121 looper letters, 13 selfloop transitions, 29 changer transitions 0/52 dead transitions. [2021-03-26 08:08:52,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 515 flow [2021-03-26 08:08:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 08:08:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 08:08:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 887 transitions. [2021-03-26 08:08:52,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6664162283996995 [2021-03-26 08:08:52,380 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 887 transitions. [2021-03-26 08:08:52,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 887 transitions. [2021-03-26 08:08:52,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:52,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 887 transitions. [2021-03-26 08:08:52,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 80.63636363636364) internal successors, (887), 11 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:52,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 121.0) internal successors, (1452), 12 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:52,385 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 121.0) internal successors, (1452), 12 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:52,385 INFO L185 Difference]: Start difference. First operand has 42 places, 36 transitions, 267 flow. Second operand 11 states and 887 transitions. [2021-03-26 08:08:52,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 515 flow [2021-03-26 08:08:52,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 480 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-26 08:08:52,390 INFO L241 Difference]: Finished difference. Result has 53 places, 52 transitions, 484 flow [2021-03-26 08:08:52,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=484, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2021-03-26 08:08:52,391 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-26 08:08:52,391 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:52,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 52 transitions, 484 flow [2021-03-26 08:08:52,391 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 52 transitions, 484 flow [2021-03-26 08:08:52,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 52 transitions, 484 flow [2021-03-26 08:08:52,403 INFO L129 PetriNetUnfolder]: 46/133 cut-off events. [2021-03-26 08:08:52,404 INFO L130 PetriNetUnfolder]: For 773/773 co-relation queries the response was YES. [2021-03-26 08:08:52,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 133 events. 46/133 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 532 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 551. Up to 46 conditions per place. [2021-03-26 08:08:52,406 INFO L142 LiptonReduction]: Number of co-enabled transitions 316 [2021-03-26 08:08:52,633 INFO L154 LiptonReduction]: Checked pairs total: 214 [2021-03-26 08:08:52,633 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-26 08:08:52,633 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 242 [2021-03-26 08:08:52,637 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 477 flow [2021-03-26 08:08:52,637 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 08:08:52,637 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:52,637 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:52,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:52,859 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:52,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1327631584, now seen corresponding path program 1 times [2021-03-26 08:08:52,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:52,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442458479] [2021-03-26 08:08:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:52,903 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:52,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,919 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:08:52,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:52,927 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-26 08:08:52,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:52,935 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:52,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:52,946 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 08:08:52,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442458479] [2021-03-26 08:08:52,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132605835] [2021-03-26 08:08:52,947 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 08:08:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:53,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:53,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:53,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:53,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:53,050 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:08:53,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:53,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:53,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:53,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:53,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:53,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:53,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:53,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:53,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:53,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:53,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:53,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:53,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:53,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:53,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:53,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:53,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:53,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:53,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:53,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:53,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:53,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,110 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 08:08:53,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:53,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 08:08:53,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935148177] [2021-03-26 08:08:53,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 08:08:53,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:53,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 08:08:53,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-26 08:08:53,113 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 130 [2021-03-26 08:08:53,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:53,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 130 [2021-03-26 08:08:53,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:53,218 INFO L129 PetriNetUnfolder]: 47/140 cut-off events. [2021-03-26 08:08:53,218 INFO L130 PetriNetUnfolder]: For 1034/1049 co-relation queries the response was YES. [2021-03-26 08:08:53,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 140 events. 47/140 cut-off events. For 1034/1049 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 596 event pairs, 0 based on Foata normal form. 10/123 useless extension candidates. Maximal degree in co-relation 659. Up to 69 conditions per place. [2021-03-26 08:08:53,220 INFO L132 encePairwiseOnDemand]: 116/130 looper letters, 33 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2021-03-26 08:08:53,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 666 flow [2021-03-26 08:08:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 08:08:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 08:08:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2021-03-26 08:08:53,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2021-03-26 08:08:53,222 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2021-03-26 08:08:53,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2021-03-26 08:08:53,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:53,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2021-03-26 08:08:53,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,226 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,226 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 477 flow. Second operand 6 states and 492 transitions. [2021-03-26 08:08:53,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 666 flow [2021-03-26 08:08:53,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 513 flow, removed 64 selfloop flow, removed 6 redundant places. [2021-03-26 08:08:53,232 INFO L241 Difference]: Finished difference. Result has 54 places, 53 transitions, 429 flow [2021-03-26 08:08:53,232 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2021-03-26 08:08:53,232 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2021-03-26 08:08:53,232 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:53,232 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 53 transitions, 429 flow [2021-03-26 08:08:53,233 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 53 transitions, 429 flow [2021-03-26 08:08:53,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 429 flow [2021-03-26 08:08:53,243 INFO L129 PetriNetUnfolder]: 47/140 cut-off events. [2021-03-26 08:08:53,243 INFO L130 PetriNetUnfolder]: For 512/516 co-relation queries the response was YES. [2021-03-26 08:08:53,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 140 events. 47/140 cut-off events. For 512/516 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 608 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 492. Up to 50 conditions per place. [2021-03-26 08:08:53,245 INFO L142 LiptonReduction]: Number of co-enabled transitions 316 [2021-03-26 08:08:53,437 INFO L154 LiptonReduction]: Checked pairs total: 122 [2021-03-26 08:08:53,438 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 08:08:53,438 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 206 [2021-03-26 08:08:53,438 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 440 flow [2021-03-26 08:08:53,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,439 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:53,439 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:53,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:53,660 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:53,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:53,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1362032009, now seen corresponding path program 1 times [2021-03-26 08:08:53,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:53,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836846972] [2021-03-26 08:08:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:53,717 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:53,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,724 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:08:53,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:53,731 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:08:53,732 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:08:53,746 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:53,747 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:53,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836846972] [2021-03-26 08:08:53,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:53,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:53,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298248356] [2021-03-26 08:08:53,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:08:53,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:53,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:08:53,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:08:53,761 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 136 [2021-03-26 08:08:53,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:53,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 136 [2021-03-26 08:08:53,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:53,862 INFO L129 PetriNetUnfolder]: 50/145 cut-off events. [2021-03-26 08:08:53,862 INFO L130 PetriNetUnfolder]: For 702/728 co-relation queries the response was YES. [2021-03-26 08:08:53,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 145 events. 50/145 cut-off events. For 702/728 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 636 event pairs, 0 based on Foata normal form. 20/137 useless extension candidates. Maximal degree in co-relation 615. Up to 58 conditions per place. [2021-03-26 08:08:53,864 INFO L132 encePairwiseOnDemand]: 112/136 looper letters, 17 selfloop transitions, 29 changer transitions 0/56 dead transitions. [2021-03-26 08:08:53,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 562 flow [2021-03-26 08:08:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2021-03-26 08:08:53,866 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.601890756302521 [2021-03-26 08:08:53,866 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2021-03-26 08:08:53,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2021-03-26 08:08:53,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:53,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2021-03-26 08:08:53,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:53,871 INFO L185 Difference]: Start difference. First operand has 54 places, 53 transitions, 440 flow. Second operand 7 states and 573 transitions. [2021-03-26 08:08:53,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 562 flow [2021-03-26 08:08:53,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 535 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-26 08:08:53,878 INFO L241 Difference]: Finished difference. Result has 59 places, 55 transitions, 521 flow [2021-03-26 08:08:53,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=521, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2021-03-26 08:08:53,878 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-26 08:08:53,878 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:53,878 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 55 transitions, 521 flow [2021-03-26 08:08:53,879 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 55 transitions, 521 flow [2021-03-26 08:08:53,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 521 flow [2021-03-26 08:08:53,893 INFO L129 PetriNetUnfolder]: 50/145 cut-off events. [2021-03-26 08:08:53,894 INFO L130 PetriNetUnfolder]: For 697/705 co-relation queries the response was YES. [2021-03-26 08:08:53,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 145 events. 50/145 cut-off events. For 697/705 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 665 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 581. Up to 56 conditions per place. [2021-03-26 08:08:53,896 INFO L142 LiptonReduction]: Number of co-enabled transitions 326 [2021-03-26 08:08:53,949 INFO L154 LiptonReduction]: Checked pairs total: 32 [2021-03-26 08:08:53,949 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:08:53,949 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 71 [2021-03-26 08:08:53,950 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 521 flow [2021-03-26 08:08:53,950 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 08:08:53,950 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:53,951 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:53,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 08:08:53,951 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:53,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1327617789, now seen corresponding path program 1 times [2021-03-26 08:08:53,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:53,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978737063] [2021-03-26 08:08:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:53,984 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:53,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:53,989 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:08:53,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:53,997 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:08:53,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:54,005 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:54,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,011 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 08:08:54,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978737063] [2021-03-26 08:08:54,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829200917] [2021-03-26 08:08:54,011 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 08:08:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:54,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:54,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:54,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:54,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:54,090 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:08:54,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:54,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:54,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:54,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:54,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:54,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:08:54,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:54,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:54,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:54,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:54,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:54,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:54,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:54,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:54,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,142 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:08:54,143 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:08:54,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:54,148 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 08:08:54,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:54,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 08:08:54,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530412927] [2021-03-26 08:08:54,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 08:08:54,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:54,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 08:08:54,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-26 08:08:54,151 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 138 [2021-03-26 08:08:54,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 521 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:54,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 138 [2021-03-26 08:08:54,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:54,272 INFO L129 PetriNetUnfolder]: 47/142 cut-off events. [2021-03-26 08:08:54,272 INFO L130 PetriNetUnfolder]: For 759/776 co-relation queries the response was YES. [2021-03-26 08:08:54,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 142 events. 47/142 cut-off events. For 759/776 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 637 event pairs, 0 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 635. Up to 67 conditions per place. [2021-03-26 08:08:54,274 INFO L132 encePairwiseOnDemand]: 122/138 looper letters, 34 selfloop transitions, 19 changer transitions 0/63 dead transitions. [2021-03-26 08:08:54,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 710 flow [2021-03-26 08:08:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 08:08:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 08:08:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 499 transitions. [2021-03-26 08:08:54,276 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6026570048309179 [2021-03-26 08:08:54,276 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 499 transitions. [2021-03-26 08:08:54,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 499 transitions. [2021-03-26 08:08:54,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:54,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 499 transitions. [2021-03-26 08:08:54,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,280 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,280 INFO L185 Difference]: Start difference. First operand has 59 places, 55 transitions, 521 flow. Second operand 6 states and 499 transitions. [2021-03-26 08:08:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 710 flow [2021-03-26 08:08:54,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 650 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-26 08:08:54,285 INFO L241 Difference]: Finished difference. Result has 59 places, 58 transitions, 566 flow [2021-03-26 08:08:54,286 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=566, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2021-03-26 08:08:54,286 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-26 08:08:54,286 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:54,286 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 58 transitions, 566 flow [2021-03-26 08:08:54,286 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 58 transitions, 566 flow [2021-03-26 08:08:54,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 566 flow [2021-03-26 08:08:54,298 INFO L129 PetriNetUnfolder]: 47/142 cut-off events. [2021-03-26 08:08:54,298 INFO L130 PetriNetUnfolder]: For 736/745 co-relation queries the response was YES. [2021-03-26 08:08:54,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 142 events. 47/142 cut-off events. For 736/745 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 639 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 569. Up to 53 conditions per place. [2021-03-26 08:08:54,300 INFO L142 LiptonReduction]: Number of co-enabled transitions 328 [2021-03-26 08:08:54,349 INFO L154 LiptonReduction]: Checked pairs total: 62 [2021-03-26 08:08:54,350 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:08:54,350 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-26 08:08:54,350 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 566 flow [2021-03-26 08:08:54,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,351 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:54,351 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:54,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:54,564 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1289761240, now seen corresponding path program 1 times [2021-03-26 08:08:54,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:54,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830687028] [2021-03-26 08:08:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:54,610 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:54,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,615 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:08:54,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:54,622 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-26 08:08:54,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:54,629 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:54,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,636 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 08:08:54,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830687028] [2021-03-26 08:08:54,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084527435] [2021-03-26 08:08:54,636 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 08:08:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:54,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:54,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:54,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:54,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:54,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:54,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:54,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:54,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:54,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:54,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:54,743 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-26 08:08:54,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:54,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:08:54,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:54,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:54,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:54,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:08:54,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:54,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:54,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:54,762 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 08:08:54,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:54,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 08:08:54,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109078296] [2021-03-26 08:08:54,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 08:08:54,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:54,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 08:08:54,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-26 08:08:54,764 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 140 [2021-03-26 08:08:54,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 566 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:54,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 140 [2021-03-26 08:08:54,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:54,910 INFO L129 PetriNetUnfolder]: 49/150 cut-off events. [2021-03-26 08:08:54,910 INFO L130 PetriNetUnfolder]: For 892/916 co-relation queries the response was YES. [2021-03-26 08:08:54,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 150 events. 49/150 cut-off events. For 892/916 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 690 event pairs, 0 based on Foata normal form. 14/133 useless extension candidates. Maximal degree in co-relation 688. Up to 67 conditions per place. [2021-03-26 08:08:54,912 INFO L132 encePairwiseOnDemand]: 121/140 looper letters, 30 selfloop transitions, 24 changer transitions 0/64 dead transitions. [2021-03-26 08:08:54,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 730 flow [2021-03-26 08:08:54,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2021-03-26 08:08:54,914 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5908163265306122 [2021-03-26 08:08:54,914 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2021-03-26 08:08:54,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2021-03-26 08:08:54,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:54,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2021-03-26 08:08:54,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,917 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,918 INFO L185 Difference]: Start difference. First operand has 59 places, 58 transitions, 566 flow. Second operand 7 states and 579 transitions. [2021-03-26 08:08:54,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 730 flow [2021-03-26 08:08:54,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 696 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-26 08:08:54,922 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 614 flow [2021-03-26 08:08:54,922 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2021-03-26 08:08:54,923 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2021-03-26 08:08:54,923 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:54,923 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 59 transitions, 614 flow [2021-03-26 08:08:54,923 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 59 transitions, 614 flow [2021-03-26 08:08:54,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 614 flow [2021-03-26 08:08:54,933 INFO L129 PetriNetUnfolder]: 49/148 cut-off events. [2021-03-26 08:08:54,933 INFO L130 PetriNetUnfolder]: For 897/899 co-relation queries the response was YES. [2021-03-26 08:08:54,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 148 events. 49/148 cut-off events. For 897/899 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 685 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 628. Up to 55 conditions per place. [2021-03-26 08:08:54,935 INFO L142 LiptonReduction]: Number of co-enabled transitions 334 [2021-03-26 08:08:54,965 INFO L154 LiptonReduction]: Checked pairs total: 24 [2021-03-26 08:08:54,966 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:08:54,966 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-26 08:08:54,966 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 614 flow [2021-03-26 08:08:54,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:54,967 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:54,967 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:55,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:55,180 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:55,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1872617982, now seen corresponding path program 1 times [2021-03-26 08:08:55,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:55,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283986866] [2021-03-26 08:08:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:55,222 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:55,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,228 INFO L142 QuantifierPusher]: treesize reduction 12, result has 42.9 percent of original size [2021-03-26 08:08:55,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:08:55,235 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:08:55,235 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:55,247 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:55,247 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:55,258 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 08:08:55,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283986866] [2021-03-26 08:08:55,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:55,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:55,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212938309] [2021-03-26 08:08:55,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:08:55,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:55,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:08:55,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:08:55,260 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2021-03-26 08:08:55,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:55,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:55,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2021-03-26 08:08:55,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:55,421 INFO L129 PetriNetUnfolder]: 55/172 cut-off events. [2021-03-26 08:08:55,422 INFO L130 PetriNetUnfolder]: For 1219/1231 co-relation queries the response was YES. [2021-03-26 08:08:55,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 172 events. 55/172 cut-off events. For 1219/1231 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 863 event pairs, 0 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 823. Up to 67 conditions per place. [2021-03-26 08:08:55,423 INFO L132 encePairwiseOnDemand]: 111/141 looper letters, 10 selfloop transitions, 48 changer transitions 0/68 dead transitions. [2021-03-26 08:08:55,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 860 flow [2021-03-26 08:08:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:08:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:08:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 741 transitions. [2021-03-26 08:08:55,426 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5839243498817966 [2021-03-26 08:08:55,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 741 transitions. [2021-03-26 08:08:55,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 741 transitions. [2021-03-26 08:08:55,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:55,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 741 transitions. [2021-03-26 08:08:55,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:55,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:55,430 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:55,430 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 614 flow. Second operand 9 states and 741 transitions. [2021-03-26 08:08:55,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 860 flow [2021-03-26 08:08:55,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 68 transitions, 815 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-03-26 08:08:55,435 INFO L241 Difference]: Finished difference. Result has 68 places, 67 transitions, 847 flow [2021-03-26 08:08:55,436 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=847, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2021-03-26 08:08:55,436 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2021-03-26 08:08:55,436 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:55,436 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 847 flow [2021-03-26 08:08:55,436 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 847 flow [2021-03-26 08:08:55,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 847 flow [2021-03-26 08:08:55,450 INFO L129 PetriNetUnfolder]: 55/172 cut-off events. [2021-03-26 08:08:55,450 INFO L130 PetriNetUnfolder]: For 1455/1467 co-relation queries the response was YES. [2021-03-26 08:08:55,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 172 events. 55/172 cut-off events. For 1455/1467 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 872 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 845. Up to 67 conditions per place. [2021-03-26 08:08:55,453 INFO L142 LiptonReduction]: Number of co-enabled transitions 372 [2021-03-26 08:08:55,579 INFO L154 LiptonReduction]: Checked pairs total: 130 [2021-03-26 08:08:55,579 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:08:55,579 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 143 [2021-03-26 08:08:55,581 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 845 flow [2021-03-26 08:08:55,581 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 08:08:55,581 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:55,581 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:55,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 08:08:55,581 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:55,582 INFO L82 PathProgramCache]: Analyzing trace with hash -664119268, now seen corresponding path program 1 times [2021-03-26 08:08:55,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:55,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006528176] [2021-03-26 08:08:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:55,619 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:08:55,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,624 INFO L142 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-03-26 08:08:55,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,635 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-26 08:08:55,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:55,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:55,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,654 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 08:08:55,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006528176] [2021-03-26 08:08:55,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207977279] [2021-03-26 08:08:55,655 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 08:08:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:55,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:55,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:55,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:55,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:55,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:55,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:55,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:55,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:55,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:55,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:55,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:55,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:55,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:55,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:55,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:55,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:55,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:55,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:55,783 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 08:08:55,785 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:08:55,786 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:55,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:55,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:55,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:55,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:55,805 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 08:08:55,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:55,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:55,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082065290] [2021-03-26 08:08:55,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:55,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:55,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:55,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:55,809 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 146 [2021-03-26 08:08:55,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 845 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:55,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:55,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 146 [2021-03-26 08:08:55,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:56,034 INFO L129 PetriNetUnfolder]: 62/191 cut-off events. [2021-03-26 08:08:56,034 INFO L130 PetriNetUnfolder]: For 1932/1966 co-relation queries the response was YES. [2021-03-26 08:08:56,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 191 events. 62/191 cut-off events. For 1932/1966 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 967 event pairs, 0 based on Foata normal form. 15/167 useless extension candidates. Maximal degree in co-relation 1056. Up to 84 conditions per place. [2021-03-26 08:08:56,036 INFO L132 encePairwiseOnDemand]: 122/146 looper letters, 28 selfloop transitions, 44 changer transitions 0/81 dead transitions. [2021-03-26 08:08:56,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 1218 flow [2021-03-26 08:08:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 08:08:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 08:08:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 907 transitions. [2021-03-26 08:08:56,039 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5647571606475716 [2021-03-26 08:08:56,039 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 907 transitions. [2021-03-26 08:08:56,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 907 transitions. [2021-03-26 08:08:56,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:56,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 907 transitions. [2021-03-26 08:08:56,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.45454545454545) internal successors, (907), 11 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,044 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,044 INFO L185 Difference]: Start difference. First operand has 67 places, 66 transitions, 845 flow. Second operand 11 states and 907 transitions. [2021-03-26 08:08:56,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 1218 flow [2021-03-26 08:08:56,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 1165 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-26 08:08:56,052 INFO L241 Difference]: Finished difference. Result has 75 places, 81 transitions, 1153 flow [2021-03-26 08:08:56,052 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1153, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2021-03-26 08:08:56,052 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2021-03-26 08:08:56,052 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:56,052 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 81 transitions, 1153 flow [2021-03-26 08:08:56,052 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 81 transitions, 1153 flow [2021-03-26 08:08:56,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 81 transitions, 1153 flow [2021-03-26 08:08:56,071 INFO L129 PetriNetUnfolder]: 62/187 cut-off events. [2021-03-26 08:08:56,071 INFO L130 PetriNetUnfolder]: For 1888/1904 co-relation queries the response was YES. [2021-03-26 08:08:56,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 187 events. 62/187 cut-off events. For 1888/1904 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 929 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 1024. Up to 78 conditions per place. [2021-03-26 08:08:56,074 INFO L142 LiptonReduction]: Number of co-enabled transitions 458 [2021-03-26 08:08:56,286 INFO L154 LiptonReduction]: Checked pairs total: 289 [2021-03-26 08:08:56,286 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 08:08:56,286 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 234 [2021-03-26 08:08:56,287 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 1156 flow [2021-03-26 08:08:56,287 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 08:08:56,287 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:56,287 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:56,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-03-26 08:08:56,510 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:56,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:56,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1500324590, now seen corresponding path program 1 times [2021-03-26 08:08:56,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:56,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159805772] [2021-03-26 08:08:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:56,527 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:56,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:56,532 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:08:56,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:56,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:08:56,540 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:56,550 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:56,550 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:56,561 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 08:08:56,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159805772] [2021-03-26 08:08:56,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:56,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:56,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090666400] [2021-03-26 08:08:56,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:08:56,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:56,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:08:56,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:08:56,563 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 154 [2021-03-26 08:08:56,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 1156 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:56,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 154 [2021-03-26 08:08:56,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:56,728 INFO L129 PetriNetUnfolder]: 69/214 cut-off events. [2021-03-26 08:08:56,728 INFO L130 PetriNetUnfolder]: For 2639/2710 co-relation queries the response was YES. [2021-03-26 08:08:56,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 214 events. 69/214 cut-off events. For 2639/2710 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1171 event pairs, 0 based on Foata normal form. 27/196 useless extension candidates. Maximal degree in co-relation 1294. Up to 91 conditions per place. [2021-03-26 08:08:56,730 INFO L132 encePairwiseOnDemand]: 114/154 looper letters, 19 selfloop transitions, 65 changer transitions 0/93 dead transitions. [2021-03-26 08:08:56,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 93 transitions, 1564 flow [2021-03-26 08:08:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:08:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:08:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 754 transitions. [2021-03-26 08:08:56,733 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5440115440115441 [2021-03-26 08:08:56,733 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 754 transitions. [2021-03-26 08:08:56,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 754 transitions. [2021-03-26 08:08:56,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:56,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 754 transitions. [2021-03-26 08:08:56,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,739 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 154.0) internal successors, (1540), 10 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:56,739 INFO L185 Difference]: Start difference. First operand has 75 places, 81 transitions, 1156 flow. Second operand 9 states and 754 transitions. [2021-03-26 08:08:56,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 93 transitions, 1564 flow [2021-03-26 08:08:56,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 1347 flow, removed 91 selfloop flow, removed 5 redundant places. [2021-03-26 08:08:56,755 INFO L241 Difference]: Finished difference. Result has 81 places, 90 transitions, 1366 flow [2021-03-26 08:08:56,755 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1366, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2021-03-26 08:08:56,755 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2021-03-26 08:08:56,756 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:56,756 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 90 transitions, 1366 flow [2021-03-26 08:08:56,756 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 90 transitions, 1366 flow [2021-03-26 08:08:56,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 90 transitions, 1366 flow [2021-03-26 08:08:56,774 INFO L129 PetriNetUnfolder]: 69/212 cut-off events. [2021-03-26 08:08:56,774 INFO L130 PetriNetUnfolder]: For 2236/2266 co-relation queries the response was YES. [2021-03-26 08:08:56,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 212 events. 69/212 cut-off events. For 2236/2266 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1158 event pairs, 0 based on Foata normal form. 1/168 useless extension candidates. Maximal degree in co-relation 1180. Up to 85 conditions per place. [2021-03-26 08:08:56,777 INFO L142 LiptonReduction]: Number of co-enabled transitions 498 [2021-03-26 08:08:56,958 INFO L154 LiptonReduction]: Checked pairs total: 299 [2021-03-26 08:08:56,958 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-26 08:08:56,958 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 202 [2021-03-26 08:08:56,959 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 1372 flow [2021-03-26 08:08:56,959 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 08:08:56,959 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:56,959 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:56,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 08:08:56,960 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:56,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:56,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1361316250, now seen corresponding path program 1 times [2021-03-26 08:08:56,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:56,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918758005] [2021-03-26 08:08:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:56,993 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:56,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,001 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:08:57,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,008 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:08:57,008 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:08:57,022 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:57,022 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:57,037 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 08:08:57,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918758005] [2021-03-26 08:08:57,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:57,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:57,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837427168] [2021-03-26 08:08:57,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:08:57,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:57,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:08:57,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:08:57,040 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 161 [2021-03-26 08:08:57,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 1372 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:57,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 161 [2021-03-26 08:08:57,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:57,181 INFO L129 PetriNetUnfolder]: 70/216 cut-off events. [2021-03-26 08:08:57,181 INFO L130 PetriNetUnfolder]: For 2375/2465 co-relation queries the response was YES. [2021-03-26 08:08:57,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 216 events. 70/216 cut-off events. For 2375/2465 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1192 event pairs, 0 based on Foata normal form. 29/200 useless extension candidates. Maximal degree in co-relation 1332. Up to 88 conditions per place. [2021-03-26 08:08:57,184 INFO L132 encePairwiseOnDemand]: 128/161 looper letters, 43 selfloop transitions, 44 changer transitions 0/96 dead transitions. [2021-03-26 08:08:57,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 1636 flow [2021-03-26 08:08:57,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2021-03-26 08:08:57,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5288376220053239 [2021-03-26 08:08:57,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2021-03-26 08:08:57,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2021-03-26 08:08:57,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:57,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2021-03-26 08:08:57,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,189 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,190 INFO L185 Difference]: Start difference. First operand has 81 places, 90 transitions, 1372 flow. Second operand 7 states and 596 transitions. [2021-03-26 08:08:57,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 1636 flow [2021-03-26 08:08:57,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 1552 flow, removed 23 selfloop flow, removed 5 redundant places. [2021-03-26 08:08:57,202 INFO L241 Difference]: Finished difference. Result has 83 places, 91 transitions, 1438 flow [2021-03-26 08:08:57,203 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1438, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2021-03-26 08:08:57,203 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2021-03-26 08:08:57,203 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:57,203 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 91 transitions, 1438 flow [2021-03-26 08:08:57,203 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 91 transitions, 1438 flow [2021-03-26 08:08:57,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 91 transitions, 1438 flow [2021-03-26 08:08:57,220 INFO L129 PetriNetUnfolder]: 70/216 cut-off events. [2021-03-26 08:08:57,220 INFO L130 PetriNetUnfolder]: For 2411/2456 co-relation queries the response was YES. [2021-03-26 08:08:57,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 216 events. 70/216 cut-off events. For 2411/2456 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1176 event pairs, 0 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 1243. Up to 82 conditions per place. [2021-03-26 08:08:57,223 INFO L142 LiptonReduction]: Number of co-enabled transitions 502 [2021-03-26 08:08:57,252 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-26 08:08:57,252 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:08:57,252 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 49 [2021-03-26 08:08:57,253 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 1438 flow [2021-03-26 08:08:57,253 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 08:08:57,253 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:57,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:57,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 08:08:57,253 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:57,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:57,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1183385077, now seen corresponding path program 1 times [2021-03-26 08:08:57,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:57,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146327505] [2021-03-26 08:08:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:57,285 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:08:57,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,291 INFO L142 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-03-26 08:08:57,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,297 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-26 08:08:57,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:57,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:57,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:57,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146327505] [2021-03-26 08:08:57,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216314181] [2021-03-26 08:08:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:08:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:57,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:57,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:57,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:57,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:57,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:57,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:57,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:57,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:57,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:57,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:57,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:57,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:57,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:57,460 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 08:08:57,461 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:08:57,461 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:57,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:57,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:57,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:57,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:57,481 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 08:08:57,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:57,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:57,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987110285] [2021-03-26 08:08:57,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:57,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:57,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:57,483 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 162 [2021-03-26 08:08:57,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 1438 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:57,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 162 [2021-03-26 08:08:57,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:57,775 INFO L129 PetriNetUnfolder]: 80/248 cut-off events. [2021-03-26 08:08:57,775 INFO L130 PetriNetUnfolder]: For 3246/3342 co-relation queries the response was YES. [2021-03-26 08:08:57,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 248 events. 80/248 cut-off events. For 3246/3342 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1386 event pairs, 0 based on Foata normal form. 22/218 useless extension candidates. Maximal degree in co-relation 1570. Up to 105 conditions per place. [2021-03-26 08:08:57,779 INFO L132 encePairwiseOnDemand]: 129/162 looper letters, 37 selfloop transitions, 63 changer transitions 0/109 dead transitions. [2021-03-26 08:08:57,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 109 transitions, 1977 flow [2021-03-26 08:08:57,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 08:08:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 08:08:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 925 transitions. [2021-03-26 08:08:57,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5190796857463524 [2021-03-26 08:08:57,784 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 925 transitions. [2021-03-26 08:08:57,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 925 transitions. [2021-03-26 08:08:57,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:57,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 925 transitions. [2021-03-26 08:08:57,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.0909090909091) internal successors, (925), 11 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 162.0) internal successors, (1944), 12 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,792 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 162.0) internal successors, (1944), 12 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:57,792 INFO L185 Difference]: Start difference. First operand has 83 places, 91 transitions, 1438 flow. Second operand 11 states and 925 transitions. [2021-03-26 08:08:57,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 109 transitions, 1977 flow [2021-03-26 08:08:57,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 109 transitions, 1925 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-26 08:08:57,807 INFO L241 Difference]: Finished difference. Result has 92 places, 109 transitions, 1909 flow [2021-03-26 08:08:57,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1909, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2021-03-26 08:08:57,807 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2021-03-26 08:08:57,807 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:57,807 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 109 transitions, 1909 flow [2021-03-26 08:08:57,808 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 109 transitions, 1909 flow [2021-03-26 08:08:57,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 109 transitions, 1909 flow [2021-03-26 08:08:57,829 INFO L129 PetriNetUnfolder]: 80/244 cut-off events. [2021-03-26 08:08:57,829 INFO L130 PetriNetUnfolder]: For 3263/3318 co-relation queries the response was YES. [2021-03-26 08:08:57,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 244 events. 80/244 cut-off events. For 3263/3318 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1361 event pairs, 0 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 1533. Up to 100 conditions per place. [2021-03-26 08:08:57,833 INFO L142 LiptonReduction]: Number of co-enabled transitions 610 [2021-03-26 08:08:58,057 INFO L154 LiptonReduction]: Checked pairs total: 460 [2021-03-26 08:08:58,057 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-26 08:08:58,058 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 251 [2021-03-26 08:08:58,058 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 1915 flow [2021-03-26 08:08:58,059 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 08:08:58,059 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:58,059 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:58,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:08:58,268 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash -732194695, now seen corresponding path program 1 times [2021-03-26 08:08:58,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:58,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954926682] [2021-03-26 08:08:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:58,298 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 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 7 [2021-03-26 08:08:58,303 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:08:58,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,309 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:08:58,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,316 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:58,316 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:58,327 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 08:08:58,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954926682] [2021-03-26 08:08:58,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:58,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:58,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463067492] [2021-03-26 08:08:58,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:08:58,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:58,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:08:58,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:08:58,330 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 171 [2021-03-26 08:08:58,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 1915 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:58,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:58,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 171 [2021-03-26 08:08:58,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:58,565 INFO L129 PetriNetUnfolder]: 87/271 cut-off events. [2021-03-26 08:08:58,565 INFO L130 PetriNetUnfolder]: For 4323/4542 co-relation queries the response was YES. [2021-03-26 08:08:58,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 271 events. 87/271 cut-off events. For 4323/4542 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1630 event pairs, 0 based on Foata normal form. 37/250 useless extension candidates. Maximal degree in co-relation 1860. Up to 114 conditions per place. [2021-03-26 08:08:58,568 INFO L132 encePairwiseOnDemand]: 116/171 looper letters, 22 selfloop transitions, 90 changer transitions 0/121 dead transitions. [2021-03-26 08:08:58,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 2421 flow [2021-03-26 08:08:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:08:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:08:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 770 transitions. [2021-03-26 08:08:58,571 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5003248862897985 [2021-03-26 08:08:58,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 770 transitions. [2021-03-26 08:08:58,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 770 transitions. [2021-03-26 08:08:58,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:58,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 770 transitions. [2021-03-26 08:08:58,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:58,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:58,575 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:58,575 INFO L185 Difference]: Start difference. First operand has 92 places, 109 transitions, 1915 flow. Second operand 9 states and 770 transitions. [2021-03-26 08:08:58,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 2421 flow [2021-03-26 08:08:58,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 2238 flow, removed 78 selfloop flow, removed 3 redundant places. [2021-03-26 08:08:58,593 INFO L241 Difference]: Finished difference. Result has 100 places, 118 transitions, 2269 flow [2021-03-26 08:08:58,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2269, PETRI_PLACES=100, PETRI_TRANSITIONS=118} [2021-03-26 08:08:58,594 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2021-03-26 08:08:58,594 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:58,595 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 118 transitions, 2269 flow [2021-03-26 08:08:58,595 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 118 transitions, 2269 flow [2021-03-26 08:08:58,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 118 transitions, 2269 flow [2021-03-26 08:08:58,621 INFO L129 PetriNetUnfolder]: 87/271 cut-off events. [2021-03-26 08:08:58,621 INFO L130 PetriNetUnfolder]: For 4503/4570 co-relation queries the response was YES. [2021-03-26 08:08:58,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 271 events. 87/271 cut-off events. For 4503/4570 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1616 event pairs, 0 based on Foata normal form. 2/214 useless extension candidates. Maximal degree in co-relation 1847. Up to 108 conditions per place. [2021-03-26 08:08:58,625 INFO L142 LiptonReduction]: Number of co-enabled transitions 650 [2021-03-26 08:08:58,837 INFO L154 LiptonReduction]: Checked pairs total: 469 [2021-03-26 08:08:58,838 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 08:08:58,838 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 244 [2021-03-26 08:08:58,841 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 118 transitions, 2277 flow [2021-03-26 08:08:58,841 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 08:08:58,841 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:58,841 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:58,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-26 08:08:58,841 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1361107682, now seen corresponding path program 1 times [2021-03-26 08:08:58,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:58,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361001617] [2021-03-26 08:08:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:58,872 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:08:58,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:58,877 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:08:58,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:58,883 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:08:58,885 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:08:58,899 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:08:58,899 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:08:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:58,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361001617] [2021-03-26 08:08:58,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:08:58,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:08:58,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786620631] [2021-03-26 08:08:58,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:08:58,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:58,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:08:58,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:08:58,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2021-03-26 08:08:58,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 118 transitions, 2277 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:58,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:58,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2021-03-26 08:08:58,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:59,157 INFO L129 PetriNetUnfolder]: 88/273 cut-off events. [2021-03-26 08:08:59,157 INFO L130 PetriNetUnfolder]: For 4786/4997 co-relation queries the response was YES. [2021-03-26 08:08:59,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 273 events. 88/273 cut-off events. For 4786/4997 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1619 event pairs, 0 based on Foata normal form. 39/254 useless extension candidates. Maximal degree in co-relation 2038. Up to 111 conditions per place. [2021-03-26 08:08:59,160 INFO L132 encePairwiseOnDemand]: 141/179 looper letters, 58 selfloop transitions, 56 changer transitions 0/123 dead transitions. [2021-03-26 08:08:59,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 2619 flow [2021-03-26 08:08:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:08:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:08:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2021-03-26 08:08:59,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4876296887470072 [2021-03-26 08:08:59,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2021-03-26 08:08:59,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2021-03-26 08:08:59,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:59,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2021-03-26 08:08:59,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,166 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,166 INFO L185 Difference]: Start difference. First operand has 100 places, 118 transitions, 2277 flow. Second operand 7 states and 611 transitions. [2021-03-26 08:08:59,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 2619 flow [2021-03-26 08:08:59,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 123 transitions, 2523 flow, removed 24 selfloop flow, removed 5 redundant places. [2021-03-26 08:08:59,187 INFO L241 Difference]: Finished difference. Result has 102 places, 119 transitions, 2371 flow [2021-03-26 08:08:59,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2189, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2371, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2021-03-26 08:08:59,187 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2021-03-26 08:08:59,187 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:59,187 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 119 transitions, 2371 flow [2021-03-26 08:08:59,188 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 119 transitions, 2371 flow [2021-03-26 08:08:59,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 119 transitions, 2371 flow [2021-03-26 08:08:59,211 INFO L129 PetriNetUnfolder]: 88/273 cut-off events. [2021-03-26 08:08:59,211 INFO L130 PetriNetUnfolder]: For 4711/4801 co-relation queries the response was YES. [2021-03-26 08:08:59,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 273 events. 88/273 cut-off events. For 4711/4801 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1654 event pairs, 0 based on Foata normal form. 2/216 useless extension candidates. Maximal degree in co-relation 1931. Up to 108 conditions per place. [2021-03-26 08:08:59,215 INFO L142 LiptonReduction]: Number of co-enabled transitions 654 [2021-03-26 08:08:59,250 INFO L154 LiptonReduction]: Checked pairs total: 52 [2021-03-26 08:08:59,250 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:08:59,251 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-26 08:08:59,252 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 2371 flow [2021-03-26 08:08:59,252 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 08:08:59,252 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:08:59,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:08:59,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-26 08:08:59,253 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:08:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:08:59,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1156166649, now seen corresponding path program 1 times [2021-03-26 08:08:59,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:08:59,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535278741] [2021-03-26 08:08:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:08:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:59,296 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:08:59,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,301 INFO L142 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-03-26 08:08:59,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,307 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-26 08:08:59,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:08:59,318 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:08:59,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,325 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 08:08:59,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535278741] [2021-03-26 08:08:59,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62183214] [2021-03-26 08:08:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:08:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:08:59,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:08:59,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:08:59,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:08:59,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:59,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:59,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:59,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:59,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:59,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:59,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:59,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:59,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:59,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:08:59,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:08:59,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:08:59,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:59,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:08:59,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:08:59,442 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 08:08:59,443 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:08:59,443 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:08:59,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:08:59,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:59,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:08:59,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:08:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:08:59,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:08:59,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:08:59,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733759096] [2021-03-26 08:08:59,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:08:59,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:08:59,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:08:59,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:08:59,468 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 180 [2021-03-26 08:08:59,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 2371 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:08:59,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 180 [2021-03-26 08:08:59,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:08:59,813 INFO L129 PetriNetUnfolder]: 98/307 cut-off events. [2021-03-26 08:08:59,813 INFO L130 PetriNetUnfolder]: For 6065/6285 co-relation queries the response was YES. [2021-03-26 08:08:59,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 307 events. 98/307 cut-off events. For 6065/6285 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1847 event pairs, 0 based on Foata normal form. 29/270 useless extension candidates. Maximal degree in co-relation 2337. Up to 126 conditions per place. [2021-03-26 08:08:59,817 INFO L132 encePairwiseOnDemand]: 136/180 looper letters, 46 selfloop transitions, 82 changer transitions 0/137 dead transitions. [2021-03-26 08:08:59,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 137 transitions, 3055 flow [2021-03-26 08:08:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 08:08:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 08:08:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 944 transitions. [2021-03-26 08:08:59,819 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4767676767676768 [2021-03-26 08:08:59,819 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 944 transitions. [2021-03-26 08:08:59,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 944 transitions. [2021-03-26 08:08:59,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:08:59,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 944 transitions. [2021-03-26 08:08:59,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.81818181818181) internal successors, (944), 11 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 180.0) internal successors, (2160), 12 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,824 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 180.0) internal successors, (2160), 12 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:08:59,824 INFO L185 Difference]: Start difference. First operand has 102 places, 119 transitions, 2371 flow. Second operand 11 states and 944 transitions. [2021-03-26 08:08:59,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 137 transitions, 3055 flow [2021-03-26 08:08:59,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 137 transitions, 2979 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-26 08:08:59,847 INFO L241 Difference]: Finished difference. Result has 110 places, 137 transitions, 2959 flow [2021-03-26 08:08:59,847 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2959, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2021-03-26 08:08:59,847 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2021-03-26 08:08:59,847 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:08:59,848 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 137 transitions, 2959 flow [2021-03-26 08:08:59,848 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 137 transitions, 2959 flow [2021-03-26 08:08:59,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 137 transitions, 2959 flow [2021-03-26 08:08:59,875 INFO L129 PetriNetUnfolder]: 98/305 cut-off events. [2021-03-26 08:08:59,875 INFO L130 PetriNetUnfolder]: For 6026/6140 co-relation queries the response was YES. [2021-03-26 08:08:59,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 305 events. 98/305 cut-off events. For 6026/6140 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1841 event pairs, 0 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 2289. Up to 126 conditions per place. [2021-03-26 08:08:59,880 INFO L142 LiptonReduction]: Number of co-enabled transitions 762 [2021-03-26 08:09:00,104 INFO L154 LiptonReduction]: Checked pairs total: 585 [2021-03-26 08:09:00,104 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-26 08:09:00,104 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 257 [2021-03-26 08:09:00,104 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 136 transitions, 2950 flow [2021-03-26 08:09:00,105 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 08:09:00,105 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:00,105 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:00,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:00,320 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:00,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:00,320 INFO L82 PathProgramCache]: Analyzing trace with hash -20668083, now seen corresponding path program 1 times [2021-03-26 08:09:00,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:00,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850704094] [2021-03-26 08:09:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:00,340 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:00,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:00,345 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:00,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:00,354 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:00,354 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:00,369 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:00,369 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:00,380 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 08:09:00,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850704094] [2021-03-26 08:09:00,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:00,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:00,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181967876] [2021-03-26 08:09:00,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:00,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:00,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:00,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:00,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 189 [2021-03-26 08:09:00,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 136 transitions, 2950 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:00,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:00,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 189 [2021-03-26 08:09:00,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:00,601 INFO L129 PetriNetUnfolder]: 98/308 cut-off events. [2021-03-26 08:09:00,602 INFO L130 PetriNetUnfolder]: For 6656/7002 co-relation queries the response was YES. [2021-03-26 08:09:00,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 308 events. 98/308 cut-off events. For 6656/7002 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1910 event pairs, 0 based on Foata normal form. 28/269 useless extension candidates. Maximal degree in co-relation 2497. Up to 128 conditions per place. [2021-03-26 08:09:00,607 INFO L132 encePairwiseOnDemand]: 142/189 looper letters, 60 selfloop transitions, 72 changer transitions 0/141 dead transitions. [2021-03-26 08:09:00,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 141 transitions, 3326 flow [2021-03-26 08:09:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 621 transitions. [2021-03-26 08:09:00,608 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2021-03-26 08:09:00,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 621 transitions. [2021-03-26 08:09:00,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 621 transitions. [2021-03-26 08:09:00,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:00,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 621 transitions. [2021-03-26 08:09:00,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:00,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:00,611 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:00,612 INFO L185 Difference]: Start difference. First operand has 110 places, 136 transitions, 2950 flow. Second operand 7 states and 621 transitions. [2021-03-26 08:09:00,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 141 transitions, 3326 flow [2021-03-26 08:09:00,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 141 transitions, 3123 flow, removed 84 selfloop flow, removed 3 redundant places. [2021-03-26 08:09:00,672 INFO L241 Difference]: Finished difference. Result has 114 places, 137 transitions, 2976 flow [2021-03-26 08:09:00,672 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2976, PETRI_PLACES=114, PETRI_TRANSITIONS=137} [2021-03-26 08:09:00,672 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2021-03-26 08:09:00,672 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:00,672 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 137 transitions, 2976 flow [2021-03-26 08:09:00,673 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 137 transitions, 2976 flow [2021-03-26 08:09:00,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 137 transitions, 2976 flow [2021-03-26 08:09:00,705 INFO L129 PetriNetUnfolder]: 98/308 cut-off events. [2021-03-26 08:09:00,705 INFO L130 PetriNetUnfolder]: For 6258/6380 co-relation queries the response was YES. [2021-03-26 08:09:00,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 308 events. 98/308 cut-off events. For 6258/6380 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1936 event pairs, 0 based on Foata normal form. 3/244 useless extension candidates. Maximal degree in co-relation 2345. Up to 123 conditions per place. [2021-03-26 08:09:00,710 INFO L142 LiptonReduction]: Number of co-enabled transitions 756 [2021-03-26 08:09:00,861 INFO L154 LiptonReduction]: Checked pairs total: 330 [2021-03-26 08:09:00,861 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:09:00,861 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 189 [2021-03-26 08:09:00,862 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 137 transitions, 2987 flow [2021-03-26 08:09:00,874 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 08:09:00,874 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:00,874 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:00,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-26 08:09:00,874 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:00,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:00,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1361028601, now seen corresponding path program 1 times [2021-03-26 08:09:00,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:00,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831759512] [2021-03-26 08:09:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:00,895 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:00,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:00,900 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:00,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:00,906 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:09:00,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:00,914 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:00,915 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:00,925 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 08:09:00,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831759512] [2021-03-26 08:09:00,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:00,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:00,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561374411] [2021-03-26 08:09:00,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:00,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:00,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:00,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:00,928 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 194 [2021-03-26 08:09:00,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 137 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:00,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:00,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 194 [2021-03-26 08:09:00,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:01,236 INFO L129 PetriNetUnfolder]: 103/325 cut-off events. [2021-03-26 08:09:01,236 INFO L130 PetriNetUnfolder]: For 7538/7929 co-relation queries the response was YES. [2021-03-26 08:09:01,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 325 events. 103/325 cut-off events. For 7538/7929 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2067 event pairs, 0 based on Foata normal form. 50/303 useless extension candidates. Maximal degree in co-relation 2680. Up to 133 conditions per place. [2021-03-26 08:09:01,242 INFO L132 encePairwiseOnDemand]: 121/194 looper letters, 19 selfloop transitions, 117 changer transitions 0/145 dead transitions. [2021-03-26 08:09:01,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 145 transitions, 3496 flow [2021-03-26 08:09:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 792 transitions. [2021-03-26 08:09:01,244 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4536082474226804 [2021-03-26 08:09:01,245 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 792 transitions. [2021-03-26 08:09:01,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 792 transitions. [2021-03-26 08:09:01,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:01,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 792 transitions. [2021-03-26 08:09:01,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,248 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,248 INFO L185 Difference]: Start difference. First operand has 114 places, 137 transitions, 2987 flow. Second operand 9 states and 792 transitions. [2021-03-26 08:09:01,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 145 transitions, 3496 flow [2021-03-26 08:09:01,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 145 transitions, 3399 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:01,277 INFO L241 Difference]: Finished difference. Result has 120 places, 144 transitions, 3474 flow [2021-03-26 08:09:01,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3474, PETRI_PLACES=120, PETRI_TRANSITIONS=144} [2021-03-26 08:09:01,277 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2021-03-26 08:09:01,277 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:01,277 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 144 transitions, 3474 flow [2021-03-26 08:09:01,277 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 144 transitions, 3474 flow [2021-03-26 08:09:01,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 144 transitions, 3474 flow [2021-03-26 08:09:01,302 INFO L129 PetriNetUnfolder]: 103/325 cut-off events. [2021-03-26 08:09:01,302 INFO L130 PetriNetUnfolder]: For 7964/8219 co-relation queries the response was YES. [2021-03-26 08:09:01,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 325 events. 103/325 cut-off events. For 7964/8219 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2076 event pairs, 0 based on Foata normal form. 4/259 useless extension candidates. Maximal degree in co-relation 2710. Up to 133 conditions per place. [2021-03-26 08:09:01,307 INFO L142 LiptonReduction]: Number of co-enabled transitions 788 [2021-03-26 08:09:01,400 INFO L154 LiptonReduction]: Checked pairs total: 285 [2021-03-26 08:09:01,401 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 08:09:01,401 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 124 [2021-03-26 08:09:01,401 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 144 transitions, 3474 flow [2021-03-26 08:09:01,402 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 08:09:01,402 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:01,402 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:01,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-26 08:09:01,402 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:01,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:01,402 INFO L82 PathProgramCache]: Analyzing trace with hash 265587924, now seen corresponding path program 1 times [2021-03-26 08:09:01,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:01,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265179095] [2021-03-26 08:09:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:01,418 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:01,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:01,423 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:01,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:01,430 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:01,430 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:01,445 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:01,445 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:01,456 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 08:09:01,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265179095] [2021-03-26 08:09:01,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:01,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:01,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893160363] [2021-03-26 08:09:01,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:01,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:01,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:01,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:01,458 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2021-03-26 08:09:01,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 144 transitions, 3474 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:01,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2021-03-26 08:09:01,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:01,699 INFO L129 PetriNetUnfolder]: 104/327 cut-off events. [2021-03-26 08:09:01,699 INFO L130 PetriNetUnfolder]: For 8474/8787 co-relation queries the response was YES. [2021-03-26 08:09:01,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 327 events. 104/327 cut-off events. For 8474/8787 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2082 event pairs, 0 based on Foata normal form. 49/306 useless extension candidates. Maximal degree in co-relation 2931. Up to 135 conditions per place. [2021-03-26 08:09:01,702 INFO L132 encePairwiseOnDemand]: 144/198 looper letters, 60 selfloop transitions, 81 changer transitions 0/150 dead transitions. [2021-03-26 08:09:01,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 150 transitions, 3918 flow [2021-03-26 08:09:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 629 transitions. [2021-03-26 08:09:01,704 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4538239538239538 [2021-03-26 08:09:01,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 629 transitions. [2021-03-26 08:09:01,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 629 transitions. [2021-03-26 08:09:01,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:01,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 629 transitions. [2021-03-26 08:09:01,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.85714285714286) internal successors, (629), 7 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,706 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,707 INFO L185 Difference]: Start difference. First operand has 120 places, 144 transitions, 3474 flow. Second operand 7 states and 629 transitions. [2021-03-26 08:09:01,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 150 transitions, 3918 flow [2021-03-26 08:09:01,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 150 transitions, 3747 flow, removed 39 selfloop flow, removed 7 redundant places. [2021-03-26 08:09:01,737 INFO L241 Difference]: Finished difference. Result has 120 places, 145 transitions, 3570 flow [2021-03-26 08:09:01,738 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3570, PETRI_PLACES=120, PETRI_TRANSITIONS=145} [2021-03-26 08:09:01,738 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2021-03-26 08:09:01,738 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:01,738 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 145 transitions, 3570 flow [2021-03-26 08:09:01,738 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 145 transitions, 3570 flow [2021-03-26 08:09:01,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 145 transitions, 3570 flow [2021-03-26 08:09:01,769 INFO L129 PetriNetUnfolder]: 104/327 cut-off events. [2021-03-26 08:09:01,769 INFO L130 PetriNetUnfolder]: For 8098/8237 co-relation queries the response was YES. [2021-03-26 08:09:01,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 327 events. 104/327 cut-off events. For 8098/8237 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2109 event pairs, 0 based on Foata normal form. 3/260 useless extension candidates. Maximal degree in co-relation 2781. Up to 132 conditions per place. [2021-03-26 08:09:01,775 INFO L142 LiptonReduction]: Number of co-enabled transitions 792 [2021-03-26 08:09:01,810 INFO L154 LiptonReduction]: Checked pairs total: 64 [2021-03-26 08:09:01,810 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:01,810 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 72 [2021-03-26 08:09:01,811 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 145 transitions, 3570 flow [2021-03-26 08:09:01,811 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 08:09:01,811 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:01,811 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:01,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-26 08:09:01,811 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1470484253, now seen corresponding path program 1 times [2021-03-26 08:09:01,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:01,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550397912] [2021-03-26 08:09:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:01,830 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:01,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:01,835 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:01,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:01,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:01,842 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:01,853 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:01,854 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:01,864 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 08:09:01,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550397912] [2021-03-26 08:09:01,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:01,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:01,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995879562] [2021-03-26 08:09:01,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:01,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:01,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:01,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:01,866 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2021-03-26 08:09:01,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 145 transitions, 3570 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:01,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:01,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2021-03-26 08:09:01,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:02,181 INFO L129 PetriNetUnfolder]: 110/346 cut-off events. [2021-03-26 08:09:02,182 INFO L130 PetriNetUnfolder]: For 9677/10021 co-relation queries the response was YES. [2021-03-26 08:09:02,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3222 conditions, 346 events. 110/346 cut-off events. For 9677/10021 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2245 event pairs, 0 based on Foata normal form. 50/322 useless extension candidates. Maximal degree in co-relation 3171. Up to 143 conditions per place. [2021-03-26 08:09:02,187 INFO L132 encePairwiseOnDemand]: 120/199 looper letters, 19 selfloop transitions, 126 changer transitions 0/154 dead transitions. [2021-03-26 08:09:02,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 154 transitions, 4166 flow [2021-03-26 08:09:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 798 transitions. [2021-03-26 08:09:02,189 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4455611390284757 [2021-03-26 08:09:02,189 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 798 transitions. [2021-03-26 08:09:02,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 798 transitions. [2021-03-26 08:09:02,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:02,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 798 transitions. [2021-03-26 08:09:02,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,192 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,193 INFO L185 Difference]: Start difference. First operand has 120 places, 145 transitions, 3570 flow. Second operand 9 states and 798 transitions. [2021-03-26 08:09:02,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 154 transitions, 4166 flow [2021-03-26 08:09:02,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 154 transitions, 4072 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:02,228 INFO L241 Difference]: Finished difference. Result has 127 places, 153 transitions, 4153 flow [2021-03-26 08:09:02,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=3478, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4153, PETRI_PLACES=127, PETRI_TRANSITIONS=153} [2021-03-26 08:09:02,228 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2021-03-26 08:09:02,228 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:02,228 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 153 transitions, 4153 flow [2021-03-26 08:09:02,229 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 153 transitions, 4153 flow [2021-03-26 08:09:02,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 153 transitions, 4153 flow [2021-03-26 08:09:02,263 INFO L129 PetriNetUnfolder]: 110/344 cut-off events. [2021-03-26 08:09:02,263 INFO L130 PetriNetUnfolder]: For 10275/10375 co-relation queries the response was YES. [2021-03-26 08:09:02,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3265 conditions, 344 events. 110/344 cut-off events. For 10275/10375 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2267 event pairs, 0 based on Foata normal form. 3/272 useless extension candidates. Maximal degree in co-relation 3213. Up to 143 conditions per place. [2021-03-26 08:09:02,269 INFO L142 LiptonReduction]: Number of co-enabled transitions 828 [2021-03-26 08:09:02,375 INFO L154 LiptonReduction]: Checked pairs total: 301 [2021-03-26 08:09:02,375 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 08:09:02,375 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 147 [2021-03-26 08:09:02,376 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 153 transitions, 4153 flow [2021-03-26 08:09:02,377 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 08:09:02,377 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:02,377 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:02,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-26 08:09:02,377 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:02,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:02,377 INFO L82 PathProgramCache]: Analyzing trace with hash -728513322, now seen corresponding path program 1 times [2021-03-26 08:09:02,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:02,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159737316] [2021-03-26 08:09:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:02,404 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:02,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,409 INFO L142 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-03-26 08:09:02,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,416 INFO L142 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-03-26 08:09:02,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:02,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 08:09:02,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,434 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 08:09:02,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159737316] [2021-03-26 08:09:02,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754369422] [2021-03-26 08:09:02,434 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 08:09:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:02,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:09:02,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:02,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:02,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:02,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:02,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:02,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:02,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:02,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:02,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:02,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:02,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:02,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:02,546 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-03-26 08:09:02,547 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-03-26 08:09:02,548 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:02,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:02,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:02,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:02,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:02,569 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 08:09:02,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:02,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:09:02,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085741864] [2021-03-26 08:09:02,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:09:02,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:02,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:09:02,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:09:02,571 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 203 [2021-03-26 08:09:02,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 153 transitions, 4153 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:02,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 203 [2021-03-26 08:09:02,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:02,955 INFO L129 PetriNetUnfolder]: 118/370 cut-off events. [2021-03-26 08:09:02,955 INFO L130 PetriNetUnfolder]: For 12594/13042 co-relation queries the response was YES. [2021-03-26 08:09:02,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3728 conditions, 370 events. 118/370 cut-off events. For 12594/13042 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2426 event pairs, 0 based on Foata normal form. 36/327 useless extension candidates. Maximal degree in co-relation 3674. Up to 157 conditions per place. [2021-03-26 08:09:02,961 INFO L132 encePairwiseOnDemand]: 148/203 looper letters, 64 selfloop transitions, 94 changer transitions 0/167 dead transitions. [2021-03-26 08:09:02,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 167 transitions, 4941 flow [2021-03-26 08:09:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 08:09:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 08:09:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 965 transitions. [2021-03-26 08:09:02,964 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.432154052843708 [2021-03-26 08:09:02,964 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 965 transitions. [2021-03-26 08:09:02,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 965 transitions. [2021-03-26 08:09:02,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:02,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 965 transitions. [2021-03-26 08:09:02,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.72727272727273) internal successors, (965), 11 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,968 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:02,968 INFO L185 Difference]: Start difference. First operand has 127 places, 153 transitions, 4153 flow. Second operand 11 states and 965 transitions. [2021-03-26 08:09:02,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 167 transitions, 4941 flow [2021-03-26 08:09:03,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 167 transitions, 4832 flow, removed 28 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:03,015 INFO L241 Difference]: Finished difference. Result has 136 places, 167 transitions, 4784 flow [2021-03-26 08:09:03,015 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4784, PETRI_PLACES=136, PETRI_TRANSITIONS=167} [2021-03-26 08:09:03,015 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2021-03-26 08:09:03,015 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:03,016 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 167 transitions, 4784 flow [2021-03-26 08:09:03,016 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 167 transitions, 4784 flow [2021-03-26 08:09:03,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 136 places, 167 transitions, 4784 flow [2021-03-26 08:09:03,052 INFO L129 PetriNetUnfolder]: 118/366 cut-off events. [2021-03-26 08:09:03,052 INFO L130 PetriNetUnfolder]: For 11992/12165 co-relation queries the response was YES. [2021-03-26 08:09:03,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 366 events. 118/366 cut-off events. For 11992/12165 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2372 event pairs, 0 based on Foata normal form. 3/292 useless extension candidates. Maximal degree in co-relation 3604. Up to 154 conditions per place. [2021-03-26 08:09:03,058 INFO L142 LiptonReduction]: Number of co-enabled transitions 916 [2021-03-26 08:09:03,275 INFO L154 LiptonReduction]: Checked pairs total: 596 [2021-03-26 08:09:03,275 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 08:09:03,276 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 261 [2021-03-26 08:09:03,276 INFO L480 AbstractCegarLoop]: Abstraction has has 136 places, 167 transitions, 4793 flow [2021-03-26 08:09:03,276 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 08:09:03,276 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:03,276 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:03,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-26 08:09:03,477 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:03,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1360476026, now seen corresponding path program 1 times [2021-03-26 08:09:03,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:03,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671392829] [2021-03-26 08:09:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:03,499 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:03,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:03,504 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:03,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:03,510 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:03,510 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:03,520 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:03,521 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:03,531 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 08:09:03,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671392829] [2021-03-26 08:09:03,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:03,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:03,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406203999] [2021-03-26 08:09:03,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:03,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:03,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:03,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:03,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 211 [2021-03-26 08:09:03,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 167 transitions, 4793 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:03,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:03,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 211 [2021-03-26 08:09:03,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:03,837 INFO L129 PetriNetUnfolder]: 125/391 cut-off events. [2021-03-26 08:09:03,837 INFO L130 PetriNetUnfolder]: For 15081/16021 co-relation queries the response was YES. [2021-03-26 08:09:03,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 391 events. 125/391 cut-off events. For 15081/16021 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2659 event pairs, 0 based on Foata normal form. 61/368 useless extension candidates. Maximal degree in co-relation 4102. Up to 168 conditions per place. [2021-03-26 08:09:03,841 INFO L132 encePairwiseOnDemand]: 122/211 looper letters, 27 selfloop transitions, 143 changer transitions 0/179 dead transitions. [2021-03-26 08:09:03,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 179 transitions, 5599 flow [2021-03-26 08:09:03,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 812 transitions. [2021-03-26 08:09:03,843 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.42759347024749866 [2021-03-26 08:09:03,843 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 812 transitions. [2021-03-26 08:09:03,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 812 transitions. [2021-03-26 08:09:03,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:03,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 812 transitions. [2021-03-26 08:09:03,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.22222222222223) internal successors, (812), 9 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:03,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:03,846 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:03,846 INFO L185 Difference]: Start difference. First operand has 136 places, 167 transitions, 4793 flow. Second operand 9 states and 812 transitions. [2021-03-26 08:09:03,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 179 transitions, 5599 flow [2021-03-26 08:09:03,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 5240 flow, removed 147 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:03,899 INFO L241 Difference]: Finished difference. Result has 143 places, 176 transitions, 5293 flow [2021-03-26 08:09:03,899 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5293, PETRI_PLACES=143, PETRI_TRANSITIONS=176} [2021-03-26 08:09:03,899 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2021-03-26 08:09:03,900 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:03,900 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 176 transitions, 5293 flow [2021-03-26 08:09:03,900 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 176 transitions, 5293 flow [2021-03-26 08:09:03,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 176 transitions, 5293 flow [2021-03-26 08:09:03,942 INFO L129 PetriNetUnfolder]: 125/391 cut-off events. [2021-03-26 08:09:03,942 INFO L130 PetriNetUnfolder]: For 14910/15127 co-relation queries the response was YES. [2021-03-26 08:09:03,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4108 conditions, 391 events. 125/391 cut-off events. For 14910/15127 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2643 event pairs, 0 based on Foata normal form. 5/313 useless extension candidates. Maximal degree in co-relation 4048. Up to 162 conditions per place. [2021-03-26 08:09:03,948 INFO L142 LiptonReduction]: Number of co-enabled transitions 956 [2021-03-26 08:09:04,153 INFO L154 LiptonReduction]: Checked pairs total: 584 [2021-03-26 08:09:04,153 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-26 08:09:04,154 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 254 [2021-03-26 08:09:04,155 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 176 transitions, 5306 flow [2021-03-26 08:09:04,155 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 08:09:04,155 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:04,155 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:04,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-26 08:09:04,155 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:04,156 INFO L82 PathProgramCache]: Analyzing trace with hash 408246851, now seen corresponding path program 1 times [2021-03-26 08:09:04,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:04,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750487659] [2021-03-26 08:09:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:04,184 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:04,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:04,189 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:04,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:04,195 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:04,195 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:04,207 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:04,207 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:04,217 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 08:09:04,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750487659] [2021-03-26 08:09:04,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:04,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:04,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337490665] [2021-03-26 08:09:04,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:04,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:04,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:04,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:04,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 218 [2021-03-26 08:09:04,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 176 transitions, 5306 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:04,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:04,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 218 [2021-03-26 08:09:04,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:04,586 INFO L129 PetriNetUnfolder]: 130/408 cut-off events. [2021-03-26 08:09:04,586 INFO L130 PetriNetUnfolder]: For 17320/18022 co-relation queries the response was YES. [2021-03-26 08:09:04,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4545 conditions, 408 events. 130/408 cut-off events. For 17320/18022 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2774 event pairs, 0 based on Foata normal form. 64/385 useless extension candidates. Maximal degree in co-relation 4483. Up to 172 conditions per place. [2021-03-26 08:09:04,594 INFO L132 encePairwiseOnDemand]: 120/218 looper letters, 18 selfloop transitions, 158 changer transitions 0/185 dead transitions. [2021-03-26 08:09:04,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 185 transitions, 5994 flow [2021-03-26 08:09:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 818 transitions. [2021-03-26 08:09:04,596 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4169215086646279 [2021-03-26 08:09:04,596 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 818 transitions. [2021-03-26 08:09:04,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 818 transitions. [2021-03-26 08:09:04,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:04,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 818 transitions. [2021-03-26 08:09:04,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.88888888888889) internal successors, (818), 9 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:04,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 218.0) internal successors, (2180), 10 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:04,603 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 218.0) internal successors, (2180), 10 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:04,603 INFO L185 Difference]: Start difference. First operand has 143 places, 176 transitions, 5306 flow. Second operand 9 states and 818 transitions. [2021-03-26 08:09:04,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 185 transitions, 5994 flow [2021-03-26 08:09:04,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 185 transitions, 5826 flow, removed 44 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:04,707 INFO L241 Difference]: Finished difference. Result has 149 places, 184 transitions, 5932 flow [2021-03-26 08:09:04,707 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=5138, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5932, PETRI_PLACES=149, PETRI_TRANSITIONS=184} [2021-03-26 08:09:04,708 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2021-03-26 08:09:04,708 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:04,708 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 184 transitions, 5932 flow [2021-03-26 08:09:04,708 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 184 transitions, 5932 flow [2021-03-26 08:09:04,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 184 transitions, 5932 flow [2021-03-26 08:09:04,761 INFO L129 PetriNetUnfolder]: 130/408 cut-off events. [2021-03-26 08:09:04,761 INFO L130 PetriNetUnfolder]: For 17514/17760 co-relation queries the response was YES. [2021-03-26 08:09:04,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4591 conditions, 408 events. 130/408 cut-off events. For 17514/17760 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 2802 event pairs, 0 based on Foata normal form. 5/327 useless extension candidates. Maximal degree in co-relation 4528. Up to 169 conditions per place. [2021-03-26 08:09:04,767 INFO L142 LiptonReduction]: Number of co-enabled transitions 994 [2021-03-26 08:09:04,870 INFO L154 LiptonReduction]: Checked pairs total: 366 [2021-03-26 08:09:04,870 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 08:09:04,871 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 163 [2021-03-26 08:09:04,871 INFO L480 AbstractCegarLoop]: Abstraction has has 149 places, 184 transitions, 5932 flow [2021-03-26 08:09:04,871 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 08:09:04,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:04,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:04,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-26 08:09:04,872 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:04,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1426554386, now seen corresponding path program 1 times [2021-03-26 08:09:04,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:04,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595417038] [2021-03-26 08:09:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:04,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:04,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:04,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,888 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 08:09:04,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595417038] [2021-03-26 08:09:04,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421029199] [2021-03-26 08:09:04,889 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 08:09:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:04,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-03-26 08:09:04,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:04,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:04,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:04,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:04,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:04,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:04,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:04,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:04,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:04,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:04,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:04,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:04,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:04,978 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-26 08:09:04,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:04,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:04,983 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 08:09:04,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-26 08:09:04,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-03-26 08:09:04,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486552053] [2021-03-26 08:09:04,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 08:09:04,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:04,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 08:09:04,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 08:09:04,985 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 222 [2021-03-26 08:09:04,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 184 transitions, 5932 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:04,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:04,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 222 [2021-03-26 08:09:04,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:05,139 INFO L129 PetriNetUnfolder]: 124/400 cut-off events. [2021-03-26 08:09:05,139 INFO L130 PetriNetUnfolder]: For 18428/18768 co-relation queries the response was YES. [2021-03-26 08:09:05,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 400 events. 124/400 cut-off events. For 18428/18768 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2751 event pairs, 0 based on Foata normal form. 57/372 useless extension candidates. Maximal degree in co-relation 4631. Up to 163 conditions per place. [2021-03-26 08:09:05,144 INFO L132 encePairwiseOnDemand]: 218/222 looper letters, 59 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2021-03-26 08:09:05,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 182 transitions, 5983 flow [2021-03-26 08:09:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 08:09:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 08:09:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 665 transitions. [2021-03-26 08:09:05,145 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7488738738738738 [2021-03-26 08:09:05,145 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 665 transitions. [2021-03-26 08:09:05,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 665 transitions. [2021-03-26 08:09:05,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:05,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 665 transitions. [2021-03-26 08:09:05,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,148 INFO L185 Difference]: Start difference. First operand has 149 places, 184 transitions, 5932 flow. Second operand 4 states and 665 transitions. [2021-03-26 08:09:05,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 182 transitions, 5983 flow [2021-03-26 08:09:05,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 182 transitions, 5767 flow, removed 55 selfloop flow, removed 6 redundant places. [2021-03-26 08:09:05,204 INFO L241 Difference]: Finished difference. Result has 148 places, 182 transitions, 5658 flow [2021-03-26 08:09:05,204 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=5641, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5658, PETRI_PLACES=148, PETRI_TRANSITIONS=182} [2021-03-26 08:09:05,204 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2021-03-26 08:09:05,204 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:05,204 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 182 transitions, 5658 flow [2021-03-26 08:09:05,204 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 182 transitions, 5658 flow [2021-03-26 08:09:05,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 182 transitions, 5658 flow [2021-03-26 08:09:05,242 INFO L129 PetriNetUnfolder]: 124/398 cut-off events. [2021-03-26 08:09:05,242 INFO L130 PetriNetUnfolder]: For 15689/15965 co-relation queries the response was YES. [2021-03-26 08:09:05,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 398 events. 124/398 cut-off events. For 15689/15965 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 2750 event pairs, 0 based on Foata normal form. 5/374 useless extension candidates. Maximal degree in co-relation 4429. Up to 160 conditions per place. [2021-03-26 08:09:05,249 INFO L142 LiptonReduction]: Number of co-enabled transitions 974 [2021-03-26 08:09:05,317 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-26 08:09:05,317 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:05,317 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 113 [2021-03-26 08:09:05,318 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 182 transitions, 5659 flow [2021-03-26 08:09:05,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,318 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:05,318 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:05,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:05,529 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:05,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:05,530 INFO L82 PathProgramCache]: Analyzing trace with hash 232238410, now seen corresponding path program 1 times [2021-03-26 08:09:05,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:05,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929194629] [2021-03-26 08:09:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:05,546 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:05,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:05,551 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:05,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:05,557 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:05,557 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:05,571 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:05,572 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:05,581 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 08:09:05,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929194629] [2021-03-26 08:09:05,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:05,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:05,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327118061] [2021-03-26 08:09:05,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:05,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:05,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:05,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:05,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 223 [2021-03-26 08:09:05,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 182 transitions, 5659 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:05,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 223 [2021-03-26 08:09:05,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:05,906 INFO L129 PetriNetUnfolder]: 125/403 cut-off events. [2021-03-26 08:09:05,907 INFO L130 PetriNetUnfolder]: For 17547/18649 co-relation queries the response was YES. [2021-03-26 08:09:05,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4784 conditions, 403 events. 125/403 cut-off events. For 17547/18649 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2780 event pairs, 0 based on Foata normal form. 65/440 useless extension candidates. Maximal degree in co-relation 4719. Up to 163 conditions per place. [2021-03-26 08:09:05,911 INFO L132 encePairwiseOnDemand]: 159/223 looper letters, 82 selfloop transitions, 99 changer transitions 0/191 dead transitions. [2021-03-26 08:09:05,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 191 transitions, 6321 flow [2021-03-26 08:09:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2021-03-26 08:09:05,913 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4176809737347854 [2021-03-26 08:09:05,913 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2021-03-26 08:09:05,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2021-03-26 08:09:05,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:05,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2021-03-26 08:09:05,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,915 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:05,915 INFO L185 Difference]: Start difference. First operand has 148 places, 182 transitions, 5659 flow. Second operand 7 states and 652 transitions. [2021-03-26 08:09:05,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 191 transitions, 6321 flow [2021-03-26 08:09:05,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 191 transitions, 6317 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-26 08:09:05,963 INFO L241 Difference]: Finished difference. Result has 154 places, 183 transitions, 5957 flow [2021-03-26 08:09:05,964 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=5655, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5957, PETRI_PLACES=154, PETRI_TRANSITIONS=183} [2021-03-26 08:09:05,964 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2021-03-26 08:09:05,964 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:05,964 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 183 transitions, 5957 flow [2021-03-26 08:09:05,964 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 183 transitions, 5957 flow [2021-03-26 08:09:05,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 154 places, 183 transitions, 5957 flow [2021-03-26 08:09:06,014 INFO L129 PetriNetUnfolder]: 125/403 cut-off events. [2021-03-26 08:09:06,014 INFO L130 PetriNetUnfolder]: For 17306/17692 co-relation queries the response was YES. [2021-03-26 08:09:06,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4713 conditions, 403 events. 125/403 cut-off events. For 17306/17692 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2793 event pairs, 0 based on Foata normal form. 5/380 useless extension candidates. Maximal degree in co-relation 4648. Up to 163 conditions per place. [2021-03-26 08:09:06,021 INFO L142 LiptonReduction]: Number of co-enabled transitions 980 [2021-03-26 08:09:06,066 INFO L154 LiptonReduction]: Checked pairs total: 81 [2021-03-26 08:09:06,066 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:06,067 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 103 [2021-03-26 08:09:06,067 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 183 transitions, 5957 flow [2021-03-26 08:09:06,067 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 08:09:06,067 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:06,067 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:06,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-26 08:09:06,068 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:06,068 INFO L82 PathProgramCache]: Analyzing trace with hash 685103781, now seen corresponding path program 1 times [2021-03-26 08:09:06,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:06,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794221273] [2021-03-26 08:09:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:06,082 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:06,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,087 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:06,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,092 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:06,093 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:06,104 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:06,104 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:06,114 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 08:09:06,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794221273] [2021-03-26 08:09:06,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:06,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:06,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635551990] [2021-03-26 08:09:06,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:06,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:06,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:06,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:06,116 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 224 [2021-03-26 08:09:06,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 183 transitions, 5957 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:06,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:06,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 224 [2021-03-26 08:09:06,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:06,487 INFO L129 PetriNetUnfolder]: 131/425 cut-off events. [2021-03-26 08:09:06,487 INFO L130 PetriNetUnfolder]: For 20043/20865 co-relation queries the response was YES. [2021-03-26 08:09:06,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5202 conditions, 425 events. 131/425 cut-off events. For 20043/20865 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2996 event pairs, 0 based on Foata normal form. 48/443 useless extension candidates. Maximal degree in co-relation 5135. Up to 175 conditions per place. [2021-03-26 08:09:06,493 INFO L132 encePairwiseOnDemand]: 121/224 looper letters, 17 selfloop transitions, 164 changer transitions 0/191 dead transitions. [2021-03-26 08:09:06,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 191 transitions, 6630 flow [2021-03-26 08:09:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 824 transitions. [2021-03-26 08:09:06,495 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2021-03-26 08:09:06,495 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 824 transitions. [2021-03-26 08:09:06,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 824 transitions. [2021-03-26 08:09:06,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:06,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 824 transitions. [2021-03-26 08:09:06,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:06,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:06,497 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:06,497 INFO L185 Difference]: Start difference. First operand has 154 places, 183 transitions, 5957 flow. Second operand 9 states and 824 transitions. [2021-03-26 08:09:06,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 191 transitions, 6630 flow [2021-03-26 08:09:06,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 191 transitions, 6501 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:06,552 INFO L241 Difference]: Finished difference. Result has 161 places, 190 transitions, 6604 flow [2021-03-26 08:09:06,553 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=5829, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6604, PETRI_PLACES=161, PETRI_TRANSITIONS=190} [2021-03-26 08:09:06,553 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2021-03-26 08:09:06,553 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:06,553 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 190 transitions, 6604 flow [2021-03-26 08:09:06,553 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 190 transitions, 6604 flow [2021-03-26 08:09:06,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 161 places, 190 transitions, 6604 flow [2021-03-26 08:09:06,593 INFO L129 PetriNetUnfolder]: 131/425 cut-off events. [2021-03-26 08:09:06,593 INFO L130 PetriNetUnfolder]: For 20368/20611 co-relation queries the response was YES. [2021-03-26 08:09:06,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5255 conditions, 425 events. 131/425 cut-off events. For 20368/20611 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2984 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 5187. Up to 175 conditions per place. [2021-03-26 08:09:06,599 INFO L142 LiptonReduction]: Number of co-enabled transitions 1018 [2021-03-26 08:09:06,688 INFO L154 LiptonReduction]: Checked pairs total: 290 [2021-03-26 08:09:06,688 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:09:06,688 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-03-26 08:09:06,689 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 190 transitions, 6606 flow [2021-03-26 08:09:06,689 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 08:09:06,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:06,689 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:06,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-26 08:09:06,689 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:06,689 INFO L82 PathProgramCache]: Analyzing trace with hash -276458906, now seen corresponding path program 1 times [2021-03-26 08:09:06,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:06,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914253024] [2021-03-26 08:09:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:06,705 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:06,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,710 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:06,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,716 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:06,716 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:06,730 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:06,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:06,738 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:06,739 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:06,750 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 08:09:06,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914253024] [2021-03-26 08:09:06,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281071294] [2021-03-26 08:09:06,750 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 08:09:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:06,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:06,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:06,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:06,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:06,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:06,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:06,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:06,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:06,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:06,846 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:06,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:06,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:06,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:06,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:06,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:06,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:06,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:06,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:06,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:06,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:06,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:06,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:06,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,877 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:06,877 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:06,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:06,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:06,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:06,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:06,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:06,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:06,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:06,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:06,906 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:06,907 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:06,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:06,917 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 08:09:06,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:06,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:06,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214315607] [2021-03-26 08:09:06,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:06,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:06,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:06,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:06,919 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 227 [2021-03-26 08:09:06,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 190 transitions, 6606 flow. Second operand has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:06,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:06,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 227 [2021-03-26 08:09:06,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:07,365 INFO L129 PetriNetUnfolder]: 132/432 cut-off events. [2021-03-26 08:09:07,365 INFO L130 PetriNetUnfolder]: For 22034/22806 co-relation queries the response was YES. [2021-03-26 08:09:07,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5571 conditions, 432 events. 132/432 cut-off events. For 22034/22806 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3066 event pairs, 0 based on Foata normal form. 32/432 useless extension candidates. Maximal degree in co-relation 5501. Up to 178 conditions per place. [2021-03-26 08:09:07,371 INFO L132 encePairwiseOnDemand]: 154/227 looper letters, 70 selfloop transitions, 121 changer transitions 0/201 dead transitions. [2021-03-26 08:09:07,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 201 transitions, 7418 flow [2021-03-26 08:09:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 08:09:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 08:09:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 901 transitions. [2021-03-26 08:09:07,373 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3969162995594714 [2021-03-26 08:09:07,373 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 901 transitions. [2021-03-26 08:09:07,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 901 transitions. [2021-03-26 08:09:07,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:07,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 901 transitions. [2021-03-26 08:09:07,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.1) internal successors, (901), 10 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:07,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:07,377 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:07,377 INFO L185 Difference]: Start difference. First operand has 161 places, 190 transitions, 6606 flow. Second operand 10 states and 901 transitions. [2021-03-26 08:09:07,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 201 transitions, 7418 flow [2021-03-26 08:09:07,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 201 transitions, 7218 flow, removed 61 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:07,446 INFO L241 Difference]: Finished difference. Result has 168 places, 200 transitions, 7143 flow [2021-03-26 08:09:07,446 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7143, PETRI_PLACES=168, PETRI_TRANSITIONS=200} [2021-03-26 08:09:07,446 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2021-03-26 08:09:07,446 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:07,446 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 200 transitions, 7143 flow [2021-03-26 08:09:07,447 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 200 transitions, 7143 flow [2021-03-26 08:09:07,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 200 transitions, 7143 flow [2021-03-26 08:09:07,502 INFO L129 PetriNetUnfolder]: 132/432 cut-off events. [2021-03-26 08:09:07,502 INFO L130 PetriNetUnfolder]: For 21077/21291 co-relation queries the response was YES. [2021-03-26 08:09:07,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 432 events. 132/432 cut-off events. For 21077/21291 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3132 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 5336. Up to 173 conditions per place. [2021-03-26 08:09:07,508 INFO L142 LiptonReduction]: Number of co-enabled transitions 1062 [2021-03-26 08:09:07,627 INFO L154 LiptonReduction]: Checked pairs total: 96 [2021-03-26 08:09:07,627 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:07,627 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 181 [2021-03-26 08:09:07,628 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 200 transitions, 7148 flow [2021-03-26 08:09:07,628 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 08:09:07,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:07,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:07,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:07,851 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:07,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:07,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1326867934, now seen corresponding path program 1 times [2021-03-26 08:09:07,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:07,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758983160] [2021-03-26 08:09:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:07,865 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:07,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:07,870 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 08:09:07,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:07,876 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:07,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:07,883 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:07,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:07,889 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 08:09:07,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758983160] [2021-03-26 08:09:07,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:07,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:07,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92915966] [2021-03-26 08:09:07,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:07,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:07,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:07,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:07,891 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 229 [2021-03-26 08:09:07,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 200 transitions, 7148 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:07,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:07,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 229 [2021-03-26 08:09:07,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:08,233 INFO L129 PetriNetUnfolder]: 138/451 cut-off events. [2021-03-26 08:09:08,234 INFO L130 PetriNetUnfolder]: For 24134/24906 co-relation queries the response was YES. [2021-03-26 08:09:08,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5935 conditions, 451 events. 138/451 cut-off events. For 24134/24906 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3256 event pairs, 0 based on Foata normal form. 32/450 useless extension candidates. Maximal degree in co-relation 5862. Up to 187 conditions per place. [2021-03-26 08:09:08,239 INFO L132 encePairwiseOnDemand]: 166/229 looper letters, 101 selfloop transitions, 99 changer transitions 0/210 dead transitions. [2021-03-26 08:09:08,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 210 transitions, 7977 flow [2021-03-26 08:09:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 823 transitions. [2021-03-26 08:09:08,241 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3993207180980107 [2021-03-26 08:09:08,241 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 823 transitions. [2021-03-26 08:09:08,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 823 transitions. [2021-03-26 08:09:08,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:08,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 823 transitions. [2021-03-26 08:09:08,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.44444444444444) internal successors, (823), 9 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 08:09:08,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:08,244 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:08,244 INFO L185 Difference]: Start difference. First operand has 168 places, 200 transitions, 7148 flow. Second operand 9 states and 823 transitions. [2021-03-26 08:09:08,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 210 transitions, 7977 flow [2021-03-26 08:09:08,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 210 transitions, 7619 flow, removed 121 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:08,324 INFO L241 Difference]: Finished difference. Result has 175 places, 209 transitions, 7494 flow [2021-03-26 08:09:08,324 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=6791, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7494, PETRI_PLACES=175, PETRI_TRANSITIONS=209} [2021-03-26 08:09:08,324 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2021-03-26 08:09:08,324 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:08,324 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 209 transitions, 7494 flow [2021-03-26 08:09:08,324 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 209 transitions, 7494 flow [2021-03-26 08:09:08,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 209 transitions, 7494 flow [2021-03-26 08:09:08,369 INFO L129 PetriNetUnfolder]: 138/451 cut-off events. [2021-03-26 08:09:08,369 INFO L130 PetriNetUnfolder]: For 24838/25099 co-relation queries the response was YES. [2021-03-26 08:09:08,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5746 conditions, 451 events. 138/451 cut-off events. For 24838/25099 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3273 event pairs, 0 based on Foata normal form. 1/419 useless extension candidates. Maximal degree in co-relation 5672. Up to 165 conditions per place. [2021-03-26 08:09:08,375 INFO L142 LiptonReduction]: Number of co-enabled transitions 1104 [2021-03-26 08:09:08,523 INFO L154 LiptonReduction]: Checked pairs total: 678 [2021-03-26 08:09:08,523 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 08:09:08,523 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 199 [2021-03-26 08:09:08,523 INFO L480 AbstractCegarLoop]: Abstraction has has 175 places, 209 transitions, 7500 flow [2021-03-26 08:09:08,524 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 08:09:08,524 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:08,524 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:08,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-26 08:09:08,524 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:08,524 INFO L82 PathProgramCache]: Analyzing trace with hash -236614823, now seen corresponding path program 1 times [2021-03-26 08:09:08,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:08,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425960490] [2021-03-26 08:09:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:08,537 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:08,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,542 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:08,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,548 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:08,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:08,555 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:08,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:08,563 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:08,563 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:08,574 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 08:09:08,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425960490] [2021-03-26 08:09:08,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982186879] [2021-03-26 08:09:08,574 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 08:09:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:08,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:08,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:08,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:08,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,658 WARN L159 QuantifierPusher]: Ignoring assumption. [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 11 [2021-03-26 08:09:08,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [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 08:09:08,660 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 08:09:08,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,662 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 08:09:08,674 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 08:09:08,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,677 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 11 [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 11 [2021-03-26 08:09:08,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:08,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:08,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:08,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:08,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,687 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:08,687 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:08,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [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 23 [2021-03-26 08:09:08,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:08,701 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-26 08:09:08,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 08:09:08,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 08:09:08,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:08,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:08,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:08,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:08,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:08,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:08,735 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:08,736 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:08,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:08,745 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 08:09:08,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:08,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:08,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324963614] [2021-03-26 08:09:08,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:08,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:08,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:08,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:08,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 235 [2021-03-26 08:09:08,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 209 transitions, 7500 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 08:09:08,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:08,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 235 [2021-03-26 08:09:08,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:09,356 INFO L129 PetriNetUnfolder]: 140/462 cut-off events. [2021-03-26 08:09:09,356 INFO L130 PetriNetUnfolder]: For 27018/28336 co-relation queries the response was YES. [2021-03-26 08:09:09,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6132 conditions, 462 events. 140/462 cut-off events. For 27018/28336 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3373 event pairs, 0 based on Foata normal form. 32/459 useless extension candidates. Maximal degree in co-relation 6056. Up to 170 conditions per place. [2021-03-26 08:09:09,364 INFO L132 encePairwiseOnDemand]: 123/235 looper letters, 22 selfloop transitions, 183 changer transitions 0/215 dead transitions. [2021-03-26 08:09:09,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 215 transitions, 8163 flow [2021-03-26 08:09:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 08:09:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 08:09:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 912 transitions. [2021-03-26 08:09:09,367 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3880851063829787 [2021-03-26 08:09:09,367 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 912 transitions. [2021-03-26 08:09:09,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 912 transitions. [2021-03-26 08:09:09,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:09,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 912 transitions. [2021-03-26 08:09:09,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.2) internal successors, (912), 10 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 08:09:09,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states 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 08:09:09,371 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states 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 08:09:09,371 INFO L185 Difference]: Start difference. First operand has 175 places, 209 transitions, 7500 flow. Second operand 10 states and 912 transitions. [2021-03-26 08:09:09,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 215 transitions, 8163 flow [2021-03-26 08:09:09,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 215 transitions, 8050 flow, removed 42 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:09,467 INFO L241 Difference]: Finished difference. Result has 183 places, 213 transitions, 8114 flow [2021-03-26 08:09:09,468 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7405, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8114, PETRI_PLACES=183, PETRI_TRANSITIONS=213} [2021-03-26 08:09:09,468 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2021-03-26 08:09:09,468 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:09,468 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 213 transitions, 8114 flow [2021-03-26 08:09:09,468 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 213 transitions, 8114 flow [2021-03-26 08:09:09,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 183 places, 213 transitions, 8114 flow [2021-03-26 08:09:09,515 INFO L129 PetriNetUnfolder]: 140/458 cut-off events. [2021-03-26 08:09:09,515 INFO L130 PetriNetUnfolder]: For 27188/27576 co-relation queries the response was YES. [2021-03-26 08:09:09,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6153 conditions, 458 events. 140/458 cut-off events. For 27188/27576 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3340 event pairs, 0 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 6075. Up to 170 conditions per place. [2021-03-26 08:09:09,521 INFO L142 LiptonReduction]: Number of co-enabled transitions 1124 [2021-03-26 08:09:09,582 INFO L154 LiptonReduction]: Checked pairs total: 230 [2021-03-26 08:09:09,582 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:09,582 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 114 [2021-03-26 08:09:09,582 INFO L480 AbstractCegarLoop]: Abstraction has has 183 places, 213 transitions, 8116 flow [2021-03-26 08:09:09,583 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 08:09:09,583 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:09,583 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:09,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-26 08:09:09,794 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:09,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1793523250, now seen corresponding path program 1 times [2021-03-26 08:09:09,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:09,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634975140] [2021-03-26 08:09:09,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:09,807 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:09,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,812 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:09:09,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:09,818 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:09,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:09,826 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:09,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:09,834 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:09,834 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:09,845 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 08:09:09,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634975140] [2021-03-26 08:09:09,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715031398] [2021-03-26 08:09:09,846 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 08:09:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:09,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:09,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:09,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:09,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:09,927 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:09:09,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:09,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:09,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:09,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:09,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:09,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:09,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:09,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:09,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:09,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:09,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:09,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:09,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:09,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:09,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:09,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:09,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:09,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:09,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:09,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:09,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:09,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:09,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:09,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:09,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:09,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:09,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:09,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:09,982 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:09,983 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:09,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:09,995 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 08:09:09,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:09,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:09,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820785327] [2021-03-26 08:09:09,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:09,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:09,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:09,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 237 [2021-03-26 08:09:09,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 213 transitions, 8116 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 08:09:09,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:09,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 237 [2021-03-26 08:09:09,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:10,345 INFO L129 PetriNetUnfolder]: 142/468 cut-off events. [2021-03-26 08:09:10,345 INFO L130 PetriNetUnfolder]: For 29374/30803 co-relation queries the response was YES. [2021-03-26 08:09:10,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6528 conditions, 468 events. 142/468 cut-off events. For 29374/30803 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3411 event pairs, 0 based on Foata normal form. 32/465 useless extension candidates. Maximal degree in co-relation 6448. Up to 247 conditions per place. [2021-03-26 08:09:10,350 INFO L132 encePairwiseOnDemand]: 210/237 looper letters, 177 selfloop transitions, 32 changer transitions 0/219 dead transitions. [2021-03-26 08:09:10,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 219 transitions, 8747 flow [2021-03-26 08:09:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 666 transitions. [2021-03-26 08:09:10,351 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4014466546112116 [2021-03-26 08:09:10,352 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 666 transitions. [2021-03-26 08:09:10,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 666 transitions. [2021-03-26 08:09:10,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:10,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 666 transitions. [2021-03-26 08:09:10,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:10,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 08:09:10,353 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 08:09:10,353 INFO L185 Difference]: Start difference. First operand has 183 places, 213 transitions, 8116 flow. Second operand 7 states and 666 transitions. [2021-03-26 08:09:10,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 219 transitions, 8747 flow [2021-03-26 08:09:10,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 219 transitions, 8394 flow, removed 121 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:10,443 INFO L241 Difference]: Finished difference. Result has 187 places, 216 transitions, 7972 flow [2021-03-26 08:09:10,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=7768, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7972, PETRI_PLACES=187, PETRI_TRANSITIONS=216} [2021-03-26 08:09:10,443 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2021-03-26 08:09:10,443 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:10,444 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 216 transitions, 7972 flow [2021-03-26 08:09:10,444 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 216 transitions, 7972 flow [2021-03-26 08:09:10,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 187 places, 216 transitions, 7972 flow [2021-03-26 08:09:10,494 INFO L129 PetriNetUnfolder]: 142/468 cut-off events. [2021-03-26 08:09:10,495 INFO L130 PetriNetUnfolder]: For 26826/27092 co-relation queries the response was YES. [2021-03-26 08:09:10,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6110 conditions, 468 events. 142/468 cut-off events. For 26826/27092 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3439 event pairs, 0 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 6030. Up to 155 conditions per place. [2021-03-26 08:09:10,501 INFO L142 LiptonReduction]: Number of co-enabled transitions 1138 [2021-03-26 08:09:10,583 INFO L154 LiptonReduction]: Checked pairs total: 103 [2021-03-26 08:09:10,584 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:10,584 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 141 [2021-03-26 08:09:10,584 INFO L480 AbstractCegarLoop]: Abstraction has has 187 places, 216 transitions, 8014 flow [2021-03-26 08:09:10,584 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 08:09:10,585 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:10,585 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:10,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-03-26 08:09:10,786 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:10,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:10,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1328302707, now seen corresponding path program 1 times [2021-03-26 08:09:10,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:10,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883591366] [2021-03-26 08:09:10,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:10,802 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:10,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,807 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:09:10,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,812 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:10,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,819 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:10,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,825 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 08:09:10,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883591366] [2021-03-26 08:09:10,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369324231] [2021-03-26 08:09:10,826 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 08:09:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:10,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:09:10,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:10,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:10,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:10,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:10,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:10,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:10,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:10,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:10,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:10,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:10,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:10,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:10,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:09:10,964 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-03-26 08:09:10,965 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:10,965 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:10,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:10,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:10,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 08:09:10,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729169729] [2021-03-26 08:09:10,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 08:09:10,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:10,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 08:09:10,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-26 08:09:10,971 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 239 [2021-03-26 08:09:10,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 216 transitions, 8014 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:10,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:10,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 239 [2021-03-26 08:09:10,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:11,342 INFO L129 PetriNetUnfolder]: 146/481 cut-off events. [2021-03-26 08:09:11,342 INFO L130 PetriNetUnfolder]: For 29460/30779 co-relation queries the response was YES. [2021-03-26 08:09:11,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 481 events. 146/481 cut-off events. For 29460/30779 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3558 event pairs, 0 based on Foata normal form. 32/476 useless extension candidates. Maximal degree in co-relation 6503. Up to 248 conditions per place. [2021-03-26 08:09:11,350 INFO L132 encePairwiseOnDemand]: 207/239 looper letters, 172 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2021-03-26 08:09:11,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 226 transitions, 8836 flow [2021-03-26 08:09:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:11,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 828 transitions. [2021-03-26 08:09:11,351 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38493723849372385 [2021-03-26 08:09:11,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 828 transitions. [2021-03-26 08:09:11,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 828 transitions. [2021-03-26 08:09:11,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:11,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 828 transitions. [2021-03-26 08:09:11,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 08:09:11,354 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 08:09:11,355 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 08:09:11,355 INFO L185 Difference]: Start difference. First operand has 187 places, 216 transitions, 8014 flow. Second operand 9 states and 828 transitions. [2021-03-26 08:09:11,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 226 transitions, 8836 flow [2021-03-26 08:09:11,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 226 transitions, 8718 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:11,479 INFO L241 Difference]: Finished difference. Result has 193 places, 223 transitions, 8324 flow [2021-03-26 08:09:11,479 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=7898, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8324, PETRI_PLACES=193, PETRI_TRANSITIONS=223} [2021-03-26 08:09:11,479 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2021-03-26 08:09:11,479 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:11,479 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 223 transitions, 8324 flow [2021-03-26 08:09:11,479 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 223 transitions, 8324 flow [2021-03-26 08:09:11,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 193 places, 223 transitions, 8324 flow [2021-03-26 08:09:11,532 INFO L129 PetriNetUnfolder]: 146/481 cut-off events. [2021-03-26 08:09:11,532 INFO L130 PetriNetUnfolder]: For 29695/29961 co-relation queries the response was YES. [2021-03-26 08:09:11,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6397 conditions, 481 events. 146/481 cut-off events. For 29695/29961 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3601 event pairs, 0 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 6315. Up to 160 conditions per place. [2021-03-26 08:09:11,539 INFO L142 LiptonReduction]: Number of co-enabled transitions 1176 [2021-03-26 08:09:11,656 INFO L154 LiptonReduction]: Checked pairs total: 244 [2021-03-26 08:09:11,657 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:09:11,657 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 178 [2021-03-26 08:09:11,658 INFO L480 AbstractCegarLoop]: Abstraction has has 193 places, 223 transitions, 8332 flow [2021-03-26 08:09:11,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:11,658 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:11,658 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:11,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-26 08:09:11,872 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:11,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1793630107, now seen corresponding path program 1 times [2021-03-26 08:09:11,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:11,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840375711] [2021-03-26 08:09:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:11,890 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:11,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,896 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:09:11,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:11,903 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:11,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:11,910 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:11,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:11,918 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:11,918 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:11,928 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 08:09:11,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840375711] [2021-03-26 08:09:11,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572691070] [2021-03-26 08:09:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:11,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:11,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:11,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:11,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:11,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:11,989 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:09:11,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:11,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:11,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:11,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:11,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:12,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:12,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:12,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:12,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:12,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:12,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:12,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:12,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:12,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:12,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:12,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:12,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:12,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:12,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:12,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:12,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:12,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:12,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:12,042 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:12,043 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:12,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:12,054 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 08:09:12,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:12,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:12,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286536581] [2021-03-26 08:09:12,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:12,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:12,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:12,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:12,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 242 [2021-03-26 08:09:12,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 223 transitions, 8332 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 08:09:12,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:12,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 242 [2021-03-26 08:09:12,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:12,478 INFO L129 PetriNetUnfolder]: 148/489 cut-off events. [2021-03-26 08:09:12,478 INFO L130 PetriNetUnfolder]: For 32394/33726 co-relation queries the response was YES. [2021-03-26 08:09:12,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6799 conditions, 489 events. 148/489 cut-off events. For 32394/33726 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3599 event pairs, 0 based on Foata normal form. 34/485 useless extension candidates. Maximal degree in co-relation 6715. Up to 255 conditions per place. [2021-03-26 08:09:12,486 INFO L132 encePairwiseOnDemand]: 212/242 looper letters, 183 selfloop transitions, 36 changer transitions 0/229 dead transitions. [2021-03-26 08:09:12,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 229 transitions, 9018 flow [2021-03-26 08:09:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2021-03-26 08:09:12,488 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3955135773317591 [2021-03-26 08:09:12,488 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2021-03-26 08:09:12,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2021-03-26 08:09:12,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:12,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2021-03-26 08:09:12,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states 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 08:09:12,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 08:09:12,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 08:09:12,490 INFO L185 Difference]: Start difference. First operand has 193 places, 223 transitions, 8332 flow. Second operand 7 states and 670 transitions. [2021-03-26 08:09:12,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 229 transitions, 9018 flow [2021-03-26 08:09:12,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 229 transitions, 8767 flow, removed 110 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:12,637 INFO L241 Difference]: Finished difference. Result has 196 places, 226 transitions, 8333 flow [2021-03-26 08:09:12,638 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=8081, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8333, PETRI_PLACES=196, PETRI_TRANSITIONS=226} [2021-03-26 08:09:12,638 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2021-03-26 08:09:12,638 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:12,638 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 226 transitions, 8333 flow [2021-03-26 08:09:12,638 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 226 transitions, 8333 flow [2021-03-26 08:09:12,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 226 transitions, 8333 flow [2021-03-26 08:09:12,687 INFO L129 PetriNetUnfolder]: 148/489 cut-off events. [2021-03-26 08:09:12,687 INFO L130 PetriNetUnfolder]: For 31472/31719 co-relation queries the response was YES. [2021-03-26 08:09:12,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6487 conditions, 489 events. 148/489 cut-off events. For 31472/31719 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 3663 event pairs, 0 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 6402. Up to 158 conditions per place. [2021-03-26 08:09:12,695 INFO L142 LiptonReduction]: Number of co-enabled transitions 1190 [2021-03-26 08:09:12,768 INFO L154 LiptonReduction]: Checked pairs total: 208 [2021-03-26 08:09:12,769 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:12,769 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 131 [2021-03-26 08:09:12,769 INFO L480 AbstractCegarLoop]: Abstraction has has 196 places, 226 transitions, 8333 flow [2021-03-26 08:09:12,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:12,769 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:12,769 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:12,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:12,984 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1595524733, now seen corresponding path program 1 times [2021-03-26 08:09:12,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:12,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858205814] [2021-03-26 08:09:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:12,996 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:12,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,000 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:13,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:13,009 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:13,020 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:13,020 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:13,028 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 08:09:13,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858205814] [2021-03-26 08:09:13,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:13,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:13,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693413436] [2021-03-26 08:09:13,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:13,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:13,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:13,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:13,030 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 244 [2021-03-26 08:09:13,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 226 transitions, 8333 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 08:09:13,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:13,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 244 [2021-03-26 08:09:13,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:13,409 INFO L129 PetriNetUnfolder]: 157/517 cut-off events. [2021-03-26 08:09:13,409 INFO L130 PetriNetUnfolder]: For 38788/40120 co-relation queries the response was YES. [2021-03-26 08:09:13,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7234 conditions, 517 events. 157/517 cut-off events. For 38788/40120 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3849 event pairs, 0 based on Foata normal form. 35/512 useless extension candidates. Maximal degree in co-relation 7147. Up to 197 conditions per place. [2021-03-26 08:09:13,419 INFO L132 encePairwiseOnDemand]: 167/244 looper letters, 101 selfloop transitions, 125 changer transitions 0/236 dead transitions. [2021-03-26 08:09:13,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 236 transitions, 9282 flow [2021-03-26 08:09:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 843 transitions. [2021-03-26 08:09:13,421 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.383879781420765 [2021-03-26 08:09:13,421 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 843 transitions. [2021-03-26 08:09:13,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 843 transitions. [2021-03-26 08:09:13,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:13,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 843 transitions. [2021-03-26 08:09:13,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.66666666666667) internal successors, (843), 9 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 08:09:13,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:13,424 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 244.0) internal successors, (2440), 10 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:13,424 INFO L185 Difference]: Start difference. First operand has 196 places, 226 transitions, 8333 flow. Second operand 9 states and 843 transitions. [2021-03-26 08:09:13,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 236 transitions, 9282 flow [2021-03-26 08:09:13,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 236 transitions, 9133 flow, removed 49 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:13,576 INFO L241 Difference]: Finished difference. Result has 203 places, 235 transitions, 9027 flow [2021-03-26 08:09:13,576 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=8191, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9027, PETRI_PLACES=203, PETRI_TRANSITIONS=235} [2021-03-26 08:09:13,576 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2021-03-26 08:09:13,576 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:13,576 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 235 transitions, 9027 flow [2021-03-26 08:09:13,576 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 235 transitions, 9027 flow [2021-03-26 08:09:13,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 203 places, 235 transitions, 9027 flow [2021-03-26 08:09:13,633 INFO L129 PetriNetUnfolder]: 157/515 cut-off events. [2021-03-26 08:09:13,633 INFO L130 PetriNetUnfolder]: For 37566/37929 co-relation queries the response was YES. [2021-03-26 08:09:13,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7150 conditions, 515 events. 157/515 cut-off events. For 37566/37929 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3873 event pairs, 0 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 7062. Up to 172 conditions per place. [2021-03-26 08:09:13,640 INFO L142 LiptonReduction]: Number of co-enabled transitions 1236 [2021-03-26 08:09:13,835 INFO L154 LiptonReduction]: Checked pairs total: 657 [2021-03-26 08:09:13,835 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 08:09:13,835 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 259 [2021-03-26 08:09:13,836 INFO L480 AbstractCegarLoop]: Abstraction has has 203 places, 235 transitions, 9051 flow [2021-03-26 08:09:13,836 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 08:09:13,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:13,836 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:13,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-26 08:09:13,836 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:13,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1327890965, now seen corresponding path program 1 times [2021-03-26 08:09:13,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:13,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731829731] [2021-03-26 08:09:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:13,848 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:13,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,853 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:09:13,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:13,858 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-26 08:09:13,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:13,866 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:13,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,873 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:13,874 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:13,884 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 08:09:13,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731829731] [2021-03-26 08:09:13,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620403785] [2021-03-26 08:09:13,885 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 08:09:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:13,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:13,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:13,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:13,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:13,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:13,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:13,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:13,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:13,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:13,978 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-03-26 08:09:13,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:13,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:13,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:13,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:13,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:13,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:13,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:13,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:13,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:14,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:14,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:14,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:14,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:14,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:14,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:14,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:14,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:14,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:14,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:14,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:14,016 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:14,016 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:14,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:14,029 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 08:09:14,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:14,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:14,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771471529] [2021-03-26 08:09:14,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:14,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:14,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:14,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:14,032 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 250 [2021-03-26 08:09:14,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 235 transitions, 9051 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 08:09:14,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:14,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 250 [2021-03-26 08:09:14,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:14,636 INFO L129 PetriNetUnfolder]: 159/523 cut-off events. [2021-03-26 08:09:14,637 INFO L130 PetriNetUnfolder]: For 40532/41999 co-relation queries the response was YES. [2021-03-26 08:09:14,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 523 events. 159/523 cut-off events. For 40532/41999 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3927 event pairs, 0 based on Foata normal form. 36/519 useless extension candidates. Maximal degree in co-relation 7500. Up to 266 conditions per place. [2021-03-26 08:09:14,646 INFO L132 encePairwiseOnDemand]: 213/250 looper letters, 186 selfloop transitions, 45 changer transitions 0/241 dead transitions. [2021-03-26 08:09:14,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 241 transitions, 9793 flow [2021-03-26 08:09:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 832 transitions. [2021-03-26 08:09:14,665 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.36977777777777776 [2021-03-26 08:09:14,665 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 832 transitions. [2021-03-26 08:09:14,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 832 transitions. [2021-03-26 08:09:14,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:14,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 832 transitions. [2021-03-26 08:09:14,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.44444444444444) internal successors, (832), 9 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 08:09:14,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 250.0) internal successors, (2500), 10 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states 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 08:09:14,668 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 250.0) internal successors, (2500), 10 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states 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 08:09:14,669 INFO L185 Difference]: Start difference. First operand has 203 places, 235 transitions, 9051 flow. Second operand 9 states and 832 transitions. [2021-03-26 08:09:14,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 241 transitions, 9793 flow [2021-03-26 08:09:14,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 241 transitions, 9612 flow, removed 60 selfloop flow, removed 3 redundant places. [2021-03-26 08:09:14,834 INFO L241 Difference]: Finished difference. Result has 209 places, 236 transitions, 9062 flow [2021-03-26 08:09:14,834 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=8895, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9062, PETRI_PLACES=209, PETRI_TRANSITIONS=236} [2021-03-26 08:09:14,834 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2021-03-26 08:09:14,834 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:14,835 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 236 transitions, 9062 flow [2021-03-26 08:09:14,835 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 236 transitions, 9062 flow [2021-03-26 08:09:14,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 236 transitions, 9062 flow [2021-03-26 08:09:14,890 INFO L129 PetriNetUnfolder]: 159/521 cut-off events. [2021-03-26 08:09:14,890 INFO L130 PetriNetUnfolder]: For 37030/37395 co-relation queries the response was YES. [2021-03-26 08:09:14,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 521 events. 159/521 cut-off events. For 37030/37395 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 3940 event pairs, 0 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 7124. Up to 177 conditions per place. [2021-03-26 08:09:14,898 INFO L142 LiptonReduction]: Number of co-enabled transitions 1242 [2021-03-26 08:09:15,030 INFO L154 LiptonReduction]: Checked pairs total: 327 [2021-03-26 08:09:15,030 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 08:09:15,030 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 196 [2021-03-26 08:09:15,030 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 236 transitions, 9111 flow [2021-03-26 08:09:15,031 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 08:09:15,031 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:15,031 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:15,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-03-26 08:09:15,231 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:15,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:15,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1223328833, now seen corresponding path program 1 times [2021-03-26 08:09:15,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:15,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249084472] [2021-03-26 08:09:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:15,249 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:15,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,254 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-26 08:09:15,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:15,260 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:15,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,266 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:15,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:15,272 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 08:09:15,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249084472] [2021-03-26 08:09:15,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:09:15,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:09:15,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291827059] [2021-03-26 08:09:15,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:09:15,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:15,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:09:15,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:15,274 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 254 [2021-03-26 08:09:15,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 236 transitions, 9111 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 08:09:15,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:15,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 254 [2021-03-26 08:09:15,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:15,687 INFO L129 PetriNetUnfolder]: 166/546 cut-off events. [2021-03-26 08:09:15,688 INFO L130 PetriNetUnfolder]: For 42311/43778 co-relation queries the response was YES. [2021-03-26 08:09:15,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7929 conditions, 546 events. 166/546 cut-off events. For 42311/43778 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4151 event pairs, 0 based on Foata normal form. 36/541 useless extension candidates. Maximal degree in co-relation 7838. Up to 219 conditions per place. [2021-03-26 08:09:15,694 INFO L132 encePairwiseOnDemand]: 172/254 looper letters, 112 selfloop transitions, 130 changer transitions 0/252 dead transitions. [2021-03-26 08:09:15,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 252 transitions, 10351 flow [2021-03-26 08:09:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 854 transitions. [2021-03-26 08:09:15,696 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.37357830271216097 [2021-03-26 08:09:15,696 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 854 transitions. [2021-03-26 08:09:15,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 854 transitions. [2021-03-26 08:09:15,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:15,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 854 transitions. [2021-03-26 08:09:15,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.88888888888889) internal successors, (854), 9 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 08:09:15,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states 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 08:09:15,699 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states 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 08:09:15,700 INFO L185 Difference]: Start difference. First operand has 209 places, 236 transitions, 9111 flow. Second operand 9 states and 854 transitions. [2021-03-26 08:09:15,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 252 transitions, 10351 flow [2021-03-26 08:09:15,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 252 transitions, 10218 flow, removed 37 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:15,823 INFO L241 Difference]: Finished difference. Result has 215 places, 251 transitions, 10093 flow [2021-03-26 08:09:15,823 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=8998, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10093, PETRI_PLACES=215, PETRI_TRANSITIONS=251} [2021-03-26 08:09:15,823 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2021-03-26 08:09:15,823 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:15,823 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 251 transitions, 10093 flow [2021-03-26 08:09:15,823 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 251 transitions, 10093 flow [2021-03-26 08:09:15,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 215 places, 251 transitions, 10093 flow [2021-03-26 08:09:15,885 INFO L129 PetriNetUnfolder]: 166/546 cut-off events. [2021-03-26 08:09:15,885 INFO L130 PetriNetUnfolder]: For 40463/41432 co-relation queries the response was YES. [2021-03-26 08:09:15,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7765 conditions, 546 events. 166/546 cut-off events. For 40463/41432 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4204 event pairs, 0 based on Foata normal form. 6/512 useless extension candidates. Maximal degree in co-relation 7673. Up to 190 conditions per place. [2021-03-26 08:09:15,893 INFO L142 LiptonReduction]: Number of co-enabled transitions 1312 [2021-03-26 08:09:16,071 INFO L154 LiptonReduction]: Checked pairs total: 774 [2021-03-26 08:09:16,071 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 08:09:16,071 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 248 [2021-03-26 08:09:16,072 INFO L480 AbstractCegarLoop]: Abstraction has has 215 places, 251 transitions, 10097 flow [2021-03-26 08:09:16,072 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 08:09:16,072 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:16,072 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:16,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-26 08:09:16,072 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:16,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1286420773, now seen corresponding path program 1 times [2021-03-26 08:09:16,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:16,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865878719] [2021-03-26 08:09:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:16,083 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:16,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,088 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:16,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,094 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:16,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:16,101 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:16,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,107 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 08:09:16,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865878719] [2021-03-26 08:09:16,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281638978] [2021-03-26 08:09:16,108 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 08:09:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:16,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:09:16,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:16,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:16,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:16,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:16,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:16,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:16,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:16,201 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-26 08:09:16,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:16,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:16,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:16,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:16,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:16,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:16,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:16,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:16,215 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:16,216 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:16,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:16,220 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 08:09:16,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:16,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 08:09:16,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244149728] [2021-03-26 08:09:16,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 08:09:16,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 08:09:16,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-26 08:09:16,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 260 [2021-03-26 08:09:16,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 251 transitions, 10097 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:16,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:16,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 260 [2021-03-26 08:09:16,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:16,572 INFO L129 PetriNetUnfolder]: 169/558 cut-off events. [2021-03-26 08:09:16,572 INFO L130 PetriNetUnfolder]: For 43541/45223 co-relation queries the response was YES. [2021-03-26 08:09:16,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8265 conditions, 558 events. 169/558 cut-off events. For 43541/45223 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4302 event pairs, 0 based on Foata normal form. 36/551 useless extension candidates. Maximal degree in co-relation 8171. Up to 275 conditions per place. [2021-03-26 08:09:16,579 INFO L132 encePairwiseOnDemand]: 216/260 looper letters, 190 selfloop transitions, 58 changer transitions 0/258 dead transitions. [2021-03-26 08:09:16,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 258 transitions, 10912 flow [2021-03-26 08:09:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 690 transitions. [2021-03-26 08:09:16,580 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3791208791208791 [2021-03-26 08:09:16,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 690 transitions. [2021-03-26 08:09:16,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 690 transitions. [2021-03-26 08:09:16,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:16,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 690 transitions. [2021-03-26 08:09:16,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.57142857142857) internal successors, (690), 7 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 08:09:16,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states 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 08:09:16,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states 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 08:09:16,583 INFO L185 Difference]: Start difference. First operand has 215 places, 251 transitions, 10097 flow. Second operand 7 states and 690 transitions. [2021-03-26 08:09:16,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 258 transitions, 10912 flow [2021-03-26 08:09:16,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 258 transitions, 10691 flow, removed 100 selfloop flow, removed 2 redundant places. [2021-03-26 08:09:16,722 INFO L241 Difference]: Finished difference. Result has 220 places, 253 transitions, 10171 flow [2021-03-26 08:09:16,722 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=9906, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10171, PETRI_PLACES=220, PETRI_TRANSITIONS=253} [2021-03-26 08:09:16,722 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2021-03-26 08:09:16,722 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:16,722 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 253 transitions, 10171 flow [2021-03-26 08:09:16,722 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 253 transitions, 10171 flow [2021-03-26 08:09:16,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 220 places, 253 transitions, 10171 flow [2021-03-26 08:09:16,784 INFO L129 PetriNetUnfolder]: 169/560 cut-off events. [2021-03-26 08:09:16,784 INFO L130 PetriNetUnfolder]: For 41270/42199 co-relation queries the response was YES. [2021-03-26 08:09:16,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7941 conditions, 560 events. 169/560 cut-off events. For 41270/42199 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4320 event pairs, 0 based on Foata normal form. 3/519 useless extension candidates. Maximal degree in co-relation 7847. Up to 191 conditions per place. [2021-03-26 08:09:16,793 INFO L142 LiptonReduction]: Number of co-enabled transitions 1322 [2021-03-26 08:09:16,867 INFO L154 LiptonReduction]: Checked pairs total: 121 [2021-03-26 08:09:16,868 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:16,868 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 146 [2021-03-26 08:09:16,868 INFO L480 AbstractCegarLoop]: Abstraction has has 220 places, 253 transitions, 10255 flow [2021-03-26 08:09:16,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:16,868 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:16,868 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:17,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:17,069 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:17,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1393097419, now seen corresponding path program 1 times [2021-03-26 08:09:17,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:17,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699133864] [2021-03-26 08:09:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:17,081 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:17,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,086 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:09:17,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:17,092 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:17,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:17,100 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:17,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:17,108 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:17,109 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:17,119 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 08:09:17,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699133864] [2021-03-26 08:09:17,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455301569] [2021-03-26 08:09:17,119 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 08:09:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:17,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:17,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:17,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:17,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:17,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:17,196 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:09:17,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:17,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:17,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:17,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:17,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:17,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:17,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:17,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:17,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:17,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:17,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:17,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:17,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:17,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:17,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:17,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:17,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:17,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:17,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:17,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:17,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:17,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:17,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:17,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:17,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:17,245 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:17,246 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:17,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:17,256 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 08:09:17,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:17,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:17,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829859500] [2021-03-26 08:09:17,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:17,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:17,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:17,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:17,258 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 262 [2021-03-26 08:09:17,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 253 transitions, 10255 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 08:09:17,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:17,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 262 [2021-03-26 08:09:17,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:17,731 INFO L129 PetriNetUnfolder]: 171/568 cut-off events. [2021-03-26 08:09:17,731 INFO L130 PetriNetUnfolder]: For 48502/50184 co-relation queries the response was YES. [2021-03-26 08:09:17,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8513 conditions, 568 events. 171/568 cut-off events. For 48502/50184 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4399 event pairs, 0 based on Foata normal form. 36/559 useless extension candidates. Maximal degree in co-relation 8417. Up to 294 conditions per place. [2021-03-26 08:09:17,738 INFO L132 encePairwiseOnDemand]: 228/262 looper letters, 209 selfloop transitions, 41 changer transitions 0/260 dead transitions. [2021-03-26 08:09:17,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 260 transitions, 11066 flow [2021-03-26 08:09:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 688 transitions. [2021-03-26 08:09:17,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3751363140676118 [2021-03-26 08:09:17,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 688 transitions. [2021-03-26 08:09:17,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 688 transitions. [2021-03-26 08:09:17,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:17,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 688 transitions. [2021-03-26 08:09:17,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:17,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 262.0) internal successors, (2096), 8 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states 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 08:09:17,742 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 262.0) internal successors, (2096), 8 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states 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 08:09:17,742 INFO L185 Difference]: Start difference. First operand has 220 places, 253 transitions, 10255 flow. Second operand 7 states and 688 transitions. [2021-03-26 08:09:17,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 260 transitions, 11066 flow [2021-03-26 08:09:17,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 260 transitions, 10941 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:17,908 INFO L241 Difference]: Finished difference. Result has 223 places, 256 transitions, 10413 flow [2021-03-26 08:09:17,908 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=10130, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10413, PETRI_PLACES=223, PETRI_TRANSITIONS=256} [2021-03-26 08:09:17,908 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2021-03-26 08:09:17,908 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:17,908 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 256 transitions, 10413 flow [2021-03-26 08:09:17,909 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 256 transitions, 10413 flow [2021-03-26 08:09:17,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 223 places, 256 transitions, 10413 flow [2021-03-26 08:09:17,973 INFO L129 PetriNetUnfolder]: 171/568 cut-off events. [2021-03-26 08:09:17,973 INFO L130 PetriNetUnfolder]: For 47084/48157 co-relation queries the response was YES. [2021-03-26 08:09:17,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8207 conditions, 568 events. 171/568 cut-off events. For 47084/48157 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4448 event pairs, 0 based on Foata normal form. 6/527 useless extension candidates. Maximal degree in co-relation 8112. Up to 195 conditions per place. [2021-03-26 08:09:17,982 INFO L142 LiptonReduction]: Number of co-enabled transitions 1336 [2021-03-26 08:09:18,034 INFO L154 LiptonReduction]: Checked pairs total: 116 [2021-03-26 08:09:18,034 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:18,035 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 127 [2021-03-26 08:09:18,035 INFO L480 AbstractCegarLoop]: Abstraction has has 223 places, 256 transitions, 10413 flow [2021-03-26 08:09:18,035 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 08:09:18,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:18,035 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:18,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-03-26 08:09:18,236 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1286437681, now seen corresponding path program 1 times [2021-03-26 08:09:18,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:18,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103931665] [2021-03-26 08:09:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:18,247 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:18,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,252 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:18,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,258 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:18,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,264 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 08:09:18,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103931665] [2021-03-26 08:09:18,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222955489] [2021-03-26 08:09:18,264 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 08:09:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:18,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:09:18,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:18,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:18,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:18,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:18,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:18,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:18,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:18,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:18,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:18,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:18,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:18,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:18,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:18,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:18,374 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 08:09:18,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:18,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-03-26 08:09:18,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901183667] [2021-03-26 08:09:18,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-26 08:09:18,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:18,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-26 08:09:18,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-26 08:09:18,375 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 263 [2021-03-26 08:09:18,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 256 transitions, 10413 flow. Second operand has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:18,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:18,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 263 [2021-03-26 08:09:18,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:18,730 INFO L129 PetriNetUnfolder]: 172/572 cut-off events. [2021-03-26 08:09:18,730 INFO L130 PetriNetUnfolder]: For 48195/49877 co-relation queries the response was YES. [2021-03-26 08:09:18,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8593 conditions, 572 events. 172/572 cut-off events. For 48195/49877 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4426 event pairs, 0 based on Foata normal form. 19/546 useless extension candidates. Maximal degree in co-relation 8496. Up to 308 conditions per place. [2021-03-26 08:09:18,737 INFO L132 encePairwiseOnDemand]: 225/263 looper letters, 207 selfloop transitions, 42 changer transitions 0/259 dead transitions. [2021-03-26 08:09:18,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 259 transitions, 11091 flow [2021-03-26 08:09:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:09:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:09:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2021-03-26 08:09:18,739 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4403041825095057 [2021-03-26 08:09:18,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2021-03-26 08:09:18,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2021-03-26 08:09:18,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:18,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2021-03-26 08:09:18,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:18,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states 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 08:09:18,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states 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 08:09:18,740 INFO L185 Difference]: Start difference. First operand has 223 places, 256 transitions, 10413 flow. Second operand 5 states and 579 transitions. [2021-03-26 08:09:18,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 259 transitions, 11091 flow [2021-03-26 08:09:18,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 259 transitions, 10942 flow, removed 47 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:18,886 INFO L241 Difference]: Finished difference. Result has 224 places, 259 transitions, 10549 flow [2021-03-26 08:09:18,887 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=10264, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10549, PETRI_PLACES=224, PETRI_TRANSITIONS=259} [2021-03-26 08:09:18,887 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2021-03-26 08:09:18,887 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:18,887 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 259 transitions, 10549 flow [2021-03-26 08:09:18,887 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 259 transitions, 10549 flow [2021-03-26 08:09:18,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 224 places, 259 transitions, 10549 flow [2021-03-26 08:09:18,966 INFO L129 PetriNetUnfolder]: 172/572 cut-off events. [2021-03-26 08:09:18,966 INFO L130 PetriNetUnfolder]: For 48244/49242 co-relation queries the response was YES. [2021-03-26 08:09:18,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8300 conditions, 572 events. 172/572 cut-off events. For 48244/49242 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4432 event pairs, 0 based on Foata normal form. 5/531 useless extension candidates. Maximal degree in co-relation 8204. Up to 195 conditions per place. [2021-03-26 08:09:18,976 INFO L142 LiptonReduction]: Number of co-enabled transitions 1350 [2021-03-26 08:09:19,027 INFO L154 LiptonReduction]: Checked pairs total: 117 [2021-03-26 08:09:19,028 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:19,028 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 141 [2021-03-26 08:09:19,028 INFO L480 AbstractCegarLoop]: Abstraction has has 224 places, 259 transitions, 10549 flow [2021-03-26 08:09:19,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:19,028 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:19,028 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:19,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-03-26 08:09:19,232 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash 19713014, now seen corresponding path program 1 times [2021-03-26 08:09:19,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:19,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978668750] [2021-03-26 08:09:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:19,248 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:19,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,253 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:19,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,259 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:19,260 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:19,274 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:09:19,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:19,283 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:19,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:19,291 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:19,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:19,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978668750] [2021-03-26 08:09:19,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240557731] [2021-03-26 08:09:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:09:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:19,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-26 08:09:19,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:19,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:19,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:19,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:19,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:19,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:19,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:19,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:19,391 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:19,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:19,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:19,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:19,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:19,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:19,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:19,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:19,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:19,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:19,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:19,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:19,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:19,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,425 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:19,426 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:19,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:19,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:19,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:19,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:19,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:19,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:19,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:09:19,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:09:19,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:19,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:19,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-26 08:09:19,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:19,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 08:09:19,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 08:09:19,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:19,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:19,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:19,473 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 08:09:19,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:19,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-26 08:09:19,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120243480] [2021-03-26 08:09:19,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 08:09:19,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:19,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 08:09:19,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-03-26 08:09:19,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 264 [2021-03-26 08:09:19,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 259 transitions, 10549 flow. Second operand has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:19,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:19,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 264 [2021-03-26 08:09:19,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:20,242 INFO L129 PetriNetUnfolder]: 179/603 cut-off events. [2021-03-26 08:09:20,243 INFO L130 PetriNetUnfolder]: For 53285/54967 co-relation queries the response was YES. [2021-03-26 08:09:20,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9074 conditions, 603 events. 179/603 cut-off events. For 53285/54967 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4761 event pairs, 0 based on Foata normal form. 36/588 useless extension candidates. Maximal degree in co-relation 8976. Up to 208 conditions per place. [2021-03-26 08:09:20,255 INFO L132 encePairwiseOnDemand]: 180/264 looper letters, 119 selfloop transitions, 143 changer transitions 0/272 dead transitions. [2021-03-26 08:09:20,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 272 transitions, 11716 flow [2021-03-26 08:09:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-26 08:09:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-26 08:09:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1255 transitions. [2021-03-26 08:09:20,257 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33955627705627706 [2021-03-26 08:09:20,257 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1255 transitions. [2021-03-26 08:09:20,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1255 transitions. [2021-03-26 08:09:20,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:20,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1255 transitions. [2021-03-26 08:09:20,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 89.64285714285714) internal successors, (1255), 14 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 08:09:20,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states 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 08:09:20,261 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states 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 08:09:20,262 INFO L185 Difference]: Start difference. First operand has 224 places, 259 transitions, 10549 flow. Second operand 14 states and 1255 transitions. [2021-03-26 08:09:20,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 272 transitions, 11716 flow [2021-03-26 08:09:20,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 272 transitions, 11421 flow, removed 112 selfloop flow, removed 3 redundant places. [2021-03-26 08:09:20,463 INFO L241 Difference]: Finished difference. Result has 237 places, 269 transitions, 11141 flow [2021-03-26 08:09:20,463 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=10254, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11141, PETRI_PLACES=237, PETRI_TRANSITIONS=269} [2021-03-26 08:09:20,464 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2021-03-26 08:09:20,464 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:20,464 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 269 transitions, 11141 flow [2021-03-26 08:09:20,464 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 269 transitions, 11141 flow [2021-03-26 08:09:20,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 237 places, 269 transitions, 11141 flow [2021-03-26 08:09:20,549 INFO L129 PetriNetUnfolder]: 179/603 cut-off events. [2021-03-26 08:09:20,549 INFO L130 PetriNetUnfolder]: For 55840/57208 co-relation queries the response was YES. [2021-03-26 08:09:20,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8856 conditions, 603 events. 179/603 cut-off events. For 55840/57208 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 4826 event pairs, 0 based on Foata normal form. 4/555 useless extension candidates. Maximal degree in co-relation 8757. Up to 202 conditions per place. [2021-03-26 08:09:20,558 INFO L142 LiptonReduction]: Number of co-enabled transitions 1392 [2021-03-26 08:09:20,760 INFO L154 LiptonReduction]: Checked pairs total: 469 [2021-03-26 08:09:20,760 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 08:09:20,760 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 296 [2021-03-26 08:09:20,761 INFO L480 AbstractCegarLoop]: Abstraction has has 237 places, 269 transitions, 11169 flow [2021-03-26 08:09:20,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:20,761 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:20,761 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:20,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-03-26 08:09:20,961 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:20,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:20,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1224332768, now seen corresponding path program 1 times [2021-03-26 08:09:20,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:20,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19644148] [2021-03-26 08:09:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:20,974 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:20,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:20,978 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:20,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:20,984 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:20,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:20,992 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:20,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:21,000 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:21,001 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:21,012 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 08:09:21,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19644148] [2021-03-26 08:09:21,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039923936] [2021-03-26 08:09:21,013 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 08:09:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:21,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:21,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:21,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:21,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:21,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:21,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:21,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:21,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:21,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:21,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:21,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:21,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:21,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:21,132 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-26 08:09:21,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:21,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:21,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:21,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:21,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:21,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:21,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:21,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:21,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:21,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:21,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:21,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:21,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:21,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:21,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:21,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:21,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:21,163 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:21,164 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:21,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:21,175 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 08:09:21,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:21,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-26 08:09:21,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178277849] [2021-03-26 08:09:21,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-26 08:09:21,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:21,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-26 08:09:21,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-26 08:09:21,177 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 270 [2021-03-26 08:09:21,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 269 transitions, 11169 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 08:09:21,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:21,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 270 [2021-03-26 08:09:21,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:21,677 INFO L129 PetriNetUnfolder]: 181/611 cut-off events. [2021-03-26 08:09:21,678 INFO L130 PetriNetUnfolder]: For 59562/61533 co-relation queries the response was YES. [2021-03-26 08:09:21,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9367 conditions, 611 events. 181/611 cut-off events. For 59562/61533 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4884 event pairs, 0 based on Foata normal form. 42/600 useless extension candidates. Maximal degree in co-relation 9266. Up to 287 conditions per place. [2021-03-26 08:09:21,685 INFO L132 encePairwiseOnDemand]: 219/270 looper letters, 197 selfloop transitions, 69 changer transitions 0/276 dead transitions. [2021-03-26 08:09:21,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 276 transitions, 11960 flow [2021-03-26 08:09:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 08:09:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 08:09:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 777 transitions. [2021-03-26 08:09:21,687 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3597222222222222 [2021-03-26 08:09:21,687 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 777 transitions. [2021-03-26 08:09:21,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 777 transitions. [2021-03-26 08:09:21,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:21,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 777 transitions. [2021-03-26 08:09:21,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 97.125) internal successors, (777), 8 states have internal predecessors, (777), 0 states have call successors, (0), 0 states 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 08:09:21,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 270.0) internal successors, (2430), 9 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states 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 08:09:21,689 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 270.0) internal successors, (2430), 9 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states 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 08:09:21,689 INFO L185 Difference]: Start difference. First operand has 237 places, 269 transitions, 11169 flow. Second operand 8 states and 777 transitions. [2021-03-26 08:09:21,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 276 transitions, 11960 flow [2021-03-26 08:09:21,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 276 transitions, 11403 flow, removed 206 selfloop flow, removed 7 redundant places. [2021-03-26 08:09:21,863 INFO L241 Difference]: Finished difference. Result has 239 places, 271 transitions, 10880 flow [2021-03-26 08:09:21,863 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=10612, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10880, PETRI_PLACES=239, PETRI_TRANSITIONS=271} [2021-03-26 08:09:21,863 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2021-03-26 08:09:21,863 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:21,863 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 271 transitions, 10880 flow [2021-03-26 08:09:21,864 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 271 transitions, 10880 flow [2021-03-26 08:09:21,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 239 places, 271 transitions, 10880 flow [2021-03-26 08:09:21,968 INFO L129 PetriNetUnfolder]: 181/611 cut-off events. [2021-03-26 08:09:21,968 INFO L130 PetriNetUnfolder]: For 56197/57215 co-relation queries the response was YES. [2021-03-26 08:09:21,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8817 conditions, 611 events. 181/611 cut-off events. For 56197/57215 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 4885 event pairs, 0 based on Foata normal form. 4/561 useless extension candidates. Maximal degree in co-relation 8715. Up to 200 conditions per place. [2021-03-26 08:09:21,984 INFO L142 LiptonReduction]: Number of co-enabled transitions 1402 [2021-03-26 08:09:22,130 INFO L154 LiptonReduction]: Checked pairs total: 634 [2021-03-26 08:09:22,130 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 08:09:22,130 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 267 [2021-03-26 08:09:22,131 INFO L480 AbstractCegarLoop]: Abstraction has has 239 places, 271 transitions, 10886 flow [2021-03-26 08:09:22,131 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 08:09:22,131 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:22,131 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:22,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-03-26 08:09:22,344 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:22,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1218601253, now seen corresponding path program 1 times [2021-03-26 08:09:22,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:22,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728205474] [2021-03-26 08:09:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:22,360 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:22,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,365 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:22,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,371 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:22,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,378 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-03-26 08:09:22,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:22,390 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 08:09:22,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728205474] [2021-03-26 08:09:22,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227371298] [2021-03-26 08:09:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:09:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:22,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:22,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:22,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:22,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:22,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:22,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:22,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:22,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:22,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:22,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:22,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:22,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:22,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:22,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:22,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:22,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:22,503 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 08:09:22,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:22,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:09:22,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358695090] [2021-03-26 08:09:22,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:09:22,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:22,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:09:22,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:09:22,505 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 274 [2021-03-26 08:09:22,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 271 transitions, 10886 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:22,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:22,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 274 [2021-03-26 08:09:22,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:23,066 INFO L129 PetriNetUnfolder]: 186/626 cut-off events. [2021-03-26 08:09:23,067 INFO L130 PetriNetUnfolder]: For 60715/62440 co-relation queries the response was YES. [2021-03-26 08:09:23,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9491 conditions, 626 events. 186/626 cut-off events. For 60715/62440 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4987 event pairs, 0 based on Foata normal form. 23/594 useless extension candidates. Maximal degree in co-relation 9387. Up to 325 conditions per place. [2021-03-26 08:09:23,075 INFO L132 encePairwiseOnDemand]: 230/274 looper letters, 216 selfloop transitions, 53 changer transitions 0/279 dead transitions. [2021-03-26 08:09:23,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 279 transitions, 11966 flow [2021-03-26 08:09:23,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 767 transitions. [2021-03-26 08:09:23,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.399895724713243 [2021-03-26 08:09:23,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 767 transitions. [2021-03-26 08:09:23,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 767 transitions. [2021-03-26 08:09:23,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:23,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 767 transitions. [2021-03-26 08:09:23,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:23,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states 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 08:09:23,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states 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 08:09:23,078 INFO L185 Difference]: Start difference. First operand has 239 places, 271 transitions, 10886 flow. Second operand 7 states and 767 transitions. [2021-03-26 08:09:23,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 279 transitions, 11966 flow [2021-03-26 08:09:23,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 279 transitions, 11870 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:23,260 INFO L241 Difference]: Finished difference. Result has 242 places, 278 transitions, 11380 flow [2021-03-26 08:09:23,261 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=10792, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11380, PETRI_PLACES=242, PETRI_TRANSITIONS=278} [2021-03-26 08:09:23,261 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2021-03-26 08:09:23,261 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:23,261 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 278 transitions, 11380 flow [2021-03-26 08:09:23,261 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 278 transitions, 11380 flow [2021-03-26 08:09:23,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 242 places, 278 transitions, 11380 flow [2021-03-26 08:09:23,338 INFO L129 PetriNetUnfolder]: 186/626 cut-off events. [2021-03-26 08:09:23,338 INFO L130 PetriNetUnfolder]: For 61209/62223 co-relation queries the response was YES. [2021-03-26 08:09:23,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9221 conditions, 626 events. 186/626 cut-off events. For 61209/62223 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5064 event pairs, 0 based on Foata normal form. 5/574 useless extension candidates. Maximal degree in co-relation 9118. Up to 208 conditions per place. [2021-03-26 08:09:23,371 INFO L142 LiptonReduction]: Number of co-enabled transitions 1434 [2021-03-26 08:09:23,439 INFO L154 LiptonReduction]: Checked pairs total: 123 [2021-03-26 08:09:23,439 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:23,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 178 [2021-03-26 08:09:23,440 INFO L480 AbstractCegarLoop]: Abstraction has has 242 places, 278 transitions, 11380 flow [2021-03-26 08:09:23,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:23,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:23,440 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:23,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-03-26 08:09:23,641 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:23,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1872615329, now seen corresponding path program 1 times [2021-03-26 08:09:23,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:23,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719219402] [2021-03-26 08:09:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:23,654 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:23,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,659 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:09:23,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,666 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-26 08:09:23,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,680 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:23,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,688 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 08:09:23,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719219402] [2021-03-26 08:09:23,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237570815] [2021-03-26 08:09:23,688 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 08:09:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:23,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:23,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:23,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:23,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:23,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:23,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:23,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:23,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:23,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:23,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:23,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:23,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:23,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:23,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:23,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:23,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:23,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:23,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:23,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:23,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:23,813 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 08:09:23,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:23,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:09:23,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241711466] [2021-03-26 08:09:23,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:09:23,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:23,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:09:23,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:09:23,815 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 275 [2021-03-26 08:09:23,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 278 transitions, 11380 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:23,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:23,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 275 [2021-03-26 08:09:23,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:24,427 INFO L129 PetriNetUnfolder]: 195/662 cut-off events. [2021-03-26 08:09:24,427 INFO L130 PetriNetUnfolder]: For 71193/72918 co-relation queries the response was YES. [2021-03-26 08:09:24,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10235 conditions, 662 events. 195/662 cut-off events. For 71193/72918 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5208 event pairs, 0 based on Foata normal form. 80/687 useless extension candidates. Maximal degree in co-relation 10130. Up to 312 conditions per place. [2021-03-26 08:09:24,436 INFO L132 encePairwiseOnDemand]: 191/275 looper letters, 179 selfloop transitions, 100 changer transitions 0/289 dead transitions. [2021-03-26 08:09:24,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 289 transitions, 12591 flow [2021-03-26 08:09:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 951 transitions. [2021-03-26 08:09:24,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3842424242424242 [2021-03-26 08:09:24,443 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 951 transitions. [2021-03-26 08:09:24,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 951 transitions. [2021-03-26 08:09:24,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:24,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 951 transitions. [2021-03-26 08:09:24,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.66666666666667) internal successors, (951), 9 states have internal predecessors, (951), 0 states have call successors, (0), 0 states 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 08:09:24,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 275.0) internal successors, (2750), 10 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 08:09:24,446 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 275.0) internal successors, (2750), 10 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 08:09:24,446 INFO L185 Difference]: Start difference. First operand has 242 places, 278 transitions, 11380 flow. Second operand 9 states and 951 transitions. [2021-03-26 08:09:24,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 289 transitions, 12591 flow [2021-03-26 08:09:24,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 289 transitions, 12214 flow, removed 168 selfloop flow, removed 2 redundant places. [2021-03-26 08:09:24,725 INFO L241 Difference]: Finished difference. Result has 250 places, 289 transitions, 11948 flow [2021-03-26 08:09:24,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=11003, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11948, PETRI_PLACES=250, PETRI_TRANSITIONS=289} [2021-03-26 08:09:24,726 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2021-03-26 08:09:24,726 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:24,726 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 289 transitions, 11948 flow [2021-03-26 08:09:24,726 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 289 transitions, 11948 flow [2021-03-26 08:09:24,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 250 places, 289 transitions, 11948 flow [2021-03-26 08:09:24,850 INFO L129 PetriNetUnfolder]: 195/662 cut-off events. [2021-03-26 08:09:24,850 INFO L130 PetriNetUnfolder]: For 69298/70328 co-relation queries the response was YES. [2021-03-26 08:09:24,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9776 conditions, 662 events. 195/662 cut-off events. For 69298/70328 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5295 event pairs, 0 based on Foata normal form. 5/609 useless extension candidates. Maximal degree in co-relation 9670. Up to 210 conditions per place. [2021-03-26 08:09:24,862 INFO L142 LiptonReduction]: Number of co-enabled transitions 1478 [2021-03-26 08:09:24,996 INFO L154 LiptonReduction]: Checked pairs total: 745 [2021-03-26 08:09:24,996 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:09:24,996 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 270 [2021-03-26 08:09:24,997 INFO L480 AbstractCegarLoop]: Abstraction has has 250 places, 289 transitions, 11952 flow [2021-03-26 08:09:24,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:24,997 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:24,997 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:25,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:25,203 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:25,203 INFO L82 PathProgramCache]: Analyzing trace with hash -236630925, now seen corresponding path program 1 times [2021-03-26 08:09:25,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:25,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920213264] [2021-03-26 08:09:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:25,216 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:25,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,221 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:25,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,227 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:25,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:25,234 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:09:25,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,242 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 08:09:25,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920213264] [2021-03-26 08:09:25,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733986499] [2021-03-26 08:09:25,242 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 08:09:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:25,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:25,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:25,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:25,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:25,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:25,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:25,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:25,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:25,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:25,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:25,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:25,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:25,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:25,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,333 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:25,334 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:25,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:25,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:25,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:25,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:25,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:25,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:25,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:25,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:25,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:25,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:25,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:25,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:25,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:25,360 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 08:09:25,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:25,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:09:25,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663628924] [2021-03-26 08:09:25,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:09:25,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:25,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:09:25,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:09:25,362 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 280 [2021-03-26 08:09:25,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 289 transitions, 11952 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:25,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:25,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 280 [2021-03-26 08:09:25,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:26,059 INFO L129 PetriNetUnfolder]: 226/788 cut-off events. [2021-03-26 08:09:26,060 INFO L130 PetriNetUnfolder]: For 97679/99242 co-relation queries the response was YES. [2021-03-26 08:09:26,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12397 conditions, 788 events. 226/788 cut-off events. For 97679/99242 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6487 event pairs, 0 based on Foata normal form. 25/752 useless extension candidates. Maximal degree in co-relation 12289. Up to 271 conditions per place. [2021-03-26 08:09:26,071 INFO L132 encePairwiseOnDemand]: 130/280 looper letters, 92 selfloop transitions, 221 changer transitions 0/323 dead transitions. [2021-03-26 08:09:26,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 323 transitions, 14311 flow [2021-03-26 08:09:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:26,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 995 transitions. [2021-03-26 08:09:26,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3948412698412698 [2021-03-26 08:09:26,075 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 995 transitions. [2021-03-26 08:09:26,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 995 transitions. [2021-03-26 08:09:26,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:26,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 995 transitions. [2021-03-26 08:09:26,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.55555555555556) internal successors, (995), 9 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 08:09:26,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:26,078 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:26,078 INFO L185 Difference]: Start difference. First operand has 250 places, 289 transitions, 11952 flow. Second operand 9 states and 995 transitions. [2021-03-26 08:09:26,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 323 transitions, 14311 flow [2021-03-26 08:09:26,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 323 transitions, 14175 flow, removed 53 selfloop flow, removed 3 redundant places. [2021-03-26 08:09:26,323 INFO L241 Difference]: Finished difference. Result has 257 places, 322 transitions, 14141 flow [2021-03-26 08:09:26,323 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=11816, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14141, PETRI_PLACES=257, PETRI_TRANSITIONS=322} [2021-03-26 08:09:26,323 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2021-03-26 08:09:26,323 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:26,323 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 322 transitions, 14141 flow [2021-03-26 08:09:26,323 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 322 transitions, 14141 flow [2021-03-26 08:09:26,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 257 places, 322 transitions, 14141 flow [2021-03-26 08:09:26,440 INFO L129 PetriNetUnfolder]: 226/788 cut-off events. [2021-03-26 08:09:26,440 INFO L130 PetriNetUnfolder]: For 96432/97886 co-relation queries the response was YES. [2021-03-26 08:09:26,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12288 conditions, 788 events. 226/788 cut-off events. For 96432/97886 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6513 event pairs, 0 based on Foata normal form. 3/725 useless extension candidates. Maximal degree in co-relation 12179. Up to 271 conditions per place. [2021-03-26 08:09:26,455 INFO L142 LiptonReduction]: Number of co-enabled transitions 1618 [2021-03-26 08:09:26,941 INFO L154 LiptonReduction]: Checked pairs total: 5007 [2021-03-26 08:09:26,941 INFO L156 LiptonReduction]: Total number of compositions: 24 [2021-03-26 08:09:26,941 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 618 [2021-03-26 08:09:26,941 INFO L480 AbstractCegarLoop]: Abstraction has has 257 places, 322 transitions, 14187 flow [2021-03-26 08:09:26,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:26,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:26,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:27,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-03-26 08:09:27,145 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:27,146 INFO L82 PathProgramCache]: Analyzing trace with hash -236202121, now seen corresponding path program 1 times [2021-03-26 08:09:27,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:27,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492171277] [2021-03-26 08:09:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:27,166 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:27,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,171 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:09:27,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:27,177 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:27,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:27,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:27,189 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:27,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,195 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 08:09:27,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492171277] [2021-03-26 08:09:27,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657892958] [2021-03-26 08:09:27,196 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 08:09:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:27,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:27,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:27,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:27,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:27,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:27,256 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:09:27,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:27,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:27,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:27,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:27,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:27,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:27,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:27,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:27,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:27,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:27,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:27,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:27,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:27,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:27,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:27,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:27,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:27,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:27,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:27,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:27,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:27,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:27,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:27,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:27,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,301 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:27,302 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:27,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:27,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:27,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:27,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:27,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:27,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:27,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:27,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:27,323 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:27,324 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:27,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:27,330 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 08:09:27,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:27,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:27,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484877156] [2021-03-26 08:09:27,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:27,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:27,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:27,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:27,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 304 [2021-03-26 08:09:27,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 322 transitions, 14187 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 08:09:27,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:27,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 304 [2021-03-26 08:09:27,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:28,087 INFO L129 PetriNetUnfolder]: 232/812 cut-off events. [2021-03-26 08:09:28,087 INFO L130 PetriNetUnfolder]: For 101446/103380 co-relation queries the response was YES. [2021-03-26 08:09:28,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13169 conditions, 812 events. 232/812 cut-off events. For 101446/103380 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6872 event pairs, 0 based on Foata normal form. 41/790 useless extension candidates. Maximal degree in co-relation 13058. Up to 401 conditions per place. [2021-03-26 08:09:28,098 INFO L132 encePairwiseOnDemand]: 261/304 looper letters, 267 selfloop transitions, 58 changer transitions 0/335 dead transitions. [2021-03-26 08:09:28,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 335 transitions, 15503 flow [2021-03-26 08:09:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 08:09:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 08:09:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 811 transitions. [2021-03-26 08:09:28,100 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3334703947368421 [2021-03-26 08:09:28,100 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 811 transitions. [2021-03-26 08:09:28,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 811 transitions. [2021-03-26 08:09:28,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:28,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 811 transitions. [2021-03-26 08:09:28,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.375) internal successors, (811), 8 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:28,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states 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 08:09:28,103 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states 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 08:09:28,103 INFO L185 Difference]: Start difference. First operand has 257 places, 322 transitions, 14187 flow. Second operand 8 states and 811 transitions. [2021-03-26 08:09:28,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 335 transitions, 15503 flow [2021-03-26 08:09:28,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 335 transitions, 15032 flow, removed 98 selfloop flow, removed 8 redundant places. [2021-03-26 08:09:28,365 INFO L241 Difference]: Finished difference. Result has 258 places, 330 transitions, 14323 flow [2021-03-26 08:09:28,365 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=13735, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14323, PETRI_PLACES=258, PETRI_TRANSITIONS=330} [2021-03-26 08:09:28,365 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2021-03-26 08:09:28,365 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:28,365 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 330 transitions, 14323 flow [2021-03-26 08:09:28,366 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 330 transitions, 14323 flow [2021-03-26 08:09:28,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 258 places, 330 transitions, 14323 flow [2021-03-26 08:09:28,486 INFO L129 PetriNetUnfolder]: 232/812 cut-off events. [2021-03-26 08:09:28,487 INFO L130 PetriNetUnfolder]: For 87122/88031 co-relation queries the response was YES. [2021-03-26 08:09:28,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12284 conditions, 812 events. 232/812 cut-off events. For 87122/88031 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6912 event pairs, 0 based on Foata normal form. 5/754 useless extension candidates. Maximal degree in co-relation 12176. Up to 277 conditions per place. [2021-03-26 08:09:28,506 INFO L142 LiptonReduction]: Number of co-enabled transitions 1650 [2021-03-26 08:09:28,621 INFO L154 LiptonReduction]: Checked pairs total: 266 [2021-03-26 08:09:28,622 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:28,622 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 257 [2021-03-26 08:09:28,622 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 330 transitions, 14323 flow [2021-03-26 08:09:28,622 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 08:09:28,622 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:28,622 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:28,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:28,823 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:28,823 INFO L82 PathProgramCache]: Analyzing trace with hash -111488873, now seen corresponding path program 1 times [2021-03-26 08:09:28,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:28,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037298138] [2021-03-26 08:09:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:28,836 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:28,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,841 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:09:28,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:28,848 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:28,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:28,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:28,862 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:28,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:28,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037298138] [2021-03-26 08:09:28,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897372978] [2021-03-26 08:09:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:09:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:28,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:28,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:28,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:28,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:28,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:28,945 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:09:28,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:28,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:28,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:28,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:28,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:28,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:28,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:28,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:28,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:28,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:28,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:28,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:28,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:28,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:28,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:28,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:28,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:28,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:28,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:28,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:28,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:28,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:28,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:28,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:28,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,977 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:28,978 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:28,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:28,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:28,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:28,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:28,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:28,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:28,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:28,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:28,997 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:28,998 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:29,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:29,005 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 08:09:29,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:29,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:29,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342244052] [2021-03-26 08:09:29,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:29,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:29,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:29,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:29,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 306 [2021-03-26 08:09:29,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 330 transitions, 14323 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 08:09:29,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:29,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 306 [2021-03-26 08:09:29,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:29,686 INFO L129 PetriNetUnfolder]: 233/816 cut-off events. [2021-03-26 08:09:29,686 INFO L130 PetriNetUnfolder]: For 91400/92986 co-relation queries the response was YES. [2021-03-26 08:09:29,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12807 conditions, 816 events. 233/816 cut-off events. For 91400/92986 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6917 event pairs, 0 based on Foata normal form. 41/794 useless extension candidates. Maximal degree in co-relation 12697. Up to 400 conditions per place. [2021-03-26 08:09:29,697 INFO L132 encePairwiseOnDemand]: 262/306 looper letters, 267 selfloop transitions, 60 changer transitions 0/337 dead transitions. [2021-03-26 08:09:29,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 337 transitions, 15350 flow [2021-03-26 08:09:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 08:09:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 08:09:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 815 transitions. [2021-03-26 08:09:29,698 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3329248366013072 [2021-03-26 08:09:29,698 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 815 transitions. [2021-03-26 08:09:29,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 815 transitions. [2021-03-26 08:09:29,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:29,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 815 transitions. [2021-03-26 08:09:29,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.875) internal successors, (815), 8 states have internal predecessors, (815), 0 states have call successors, (0), 0 states 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 08:09:29,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states 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 08:09:29,700 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states 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 08:09:29,700 INFO L185 Difference]: Start difference. First operand has 258 places, 330 transitions, 14323 flow. Second operand 8 states and 815 transitions. [2021-03-26 08:09:29,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 337 transitions, 15350 flow [2021-03-26 08:09:29,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 337 transitions, 15267 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:29,937 INFO L241 Difference]: Finished difference. Result has 263 places, 332 transitions, 14553 flow [2021-03-26 08:09:29,937 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=14242, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14553, PETRI_PLACES=263, PETRI_TRANSITIONS=332} [2021-03-26 08:09:29,937 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2021-03-26 08:09:29,937 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:29,937 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 332 transitions, 14553 flow [2021-03-26 08:09:29,937 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 332 transitions, 14553 flow [2021-03-26 08:09:29,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 263 places, 332 transitions, 14553 flow [2021-03-26 08:09:30,067 INFO L129 PetriNetUnfolder]: 233/816 cut-off events. [2021-03-26 08:09:30,067 INFO L130 PetriNetUnfolder]: For 87773/88677 co-relation queries the response was YES. [2021-03-26 08:09:30,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12398 conditions, 816 events. 233/816 cut-off events. For 87773/88677 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6952 event pairs, 0 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 12288. Up to 279 conditions per place. [2021-03-26 08:09:30,083 INFO L142 LiptonReduction]: Number of co-enabled transitions 1658 [2021-03-26 08:09:30,178 INFO L154 LiptonReduction]: Checked pairs total: 134 [2021-03-26 08:09:30,179 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:30,179 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 242 [2021-03-26 08:09:30,179 INFO L480 AbstractCegarLoop]: Abstraction has has 263 places, 332 transitions, 14553 flow [2021-03-26 08:09:30,179 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 08:09:30,179 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:30,179 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:30,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-03-26 08:09:30,380 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash -112403590, now seen corresponding path program 1 times [2021-03-26 08:09:30,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:30,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793978952] [2021-03-26 08:09:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:30,401 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:30,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,406 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:09:30,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:30,413 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:30,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:30,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:30,427 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:30,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,435 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 08:09:30,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793978952] [2021-03-26 08:09:30,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930076721] [2021-03-26 08:09:30,435 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 08:09:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:30,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:30,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:30,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:30,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:30,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:30,510 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:09:30,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:30,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:30,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:30,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:30,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:30,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:30,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:30,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:30,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:30,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:30,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:30,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:30,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:30,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:30,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:30,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:30,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:30,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:30,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:30,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:30,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:30,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:30,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:30,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:30,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,548 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:30,548 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:30,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:30,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:30,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:30,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:30,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:30,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:30,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:30,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:30,571 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:30,571 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:30,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:30,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:30,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:30,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552535409] [2021-03-26 08:09:30,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:30,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:30,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:30,580 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 307 [2021-03-26 08:09:30,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 332 transitions, 14553 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 08:09:30,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:30,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 307 [2021-03-26 08:09:30,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:31,260 INFO L129 PetriNetUnfolder]: 235/824 cut-off events. [2021-03-26 08:09:31,260 INFO L130 PetriNetUnfolder]: For 92892/94478 co-relation queries the response was YES. [2021-03-26 08:09:31,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12992 conditions, 824 events. 235/824 cut-off events. For 92892/94478 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7029 event pairs, 0 based on Foata normal form. 42/800 useless extension candidates. Maximal degree in co-relation 12880. Up to 400 conditions per place. [2021-03-26 08:09:31,272 INFO L132 encePairwiseOnDemand]: 262/307 looper letters, 266 selfloop transitions, 63 changer transitions 0/339 dead transitions. [2021-03-26 08:09:31,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 339 transitions, 15588 flow [2021-03-26 08:09:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 08:09:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 08:09:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 819 transitions. [2021-03-26 08:09:31,273 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3334690553745928 [2021-03-26 08:09:31,273 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 819 transitions. [2021-03-26 08:09:31,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 819 transitions. [2021-03-26 08:09:31,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:31,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 819 transitions. [2021-03-26 08:09:31,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.375) internal successors, (819), 8 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 08:09:31,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states 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 08:09:31,276 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states 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 08:09:31,276 INFO L185 Difference]: Start difference. First operand has 263 places, 332 transitions, 14553 flow. Second operand 8 states and 819 transitions. [2021-03-26 08:09:31,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 339 transitions, 15588 flow [2021-03-26 08:09:31,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 339 transitions, 15466 flow, removed 22 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:31,532 INFO L241 Difference]: Finished difference. Result has 267 places, 334 transitions, 14756 flow [2021-03-26 08:09:31,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=14431, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14756, PETRI_PLACES=267, PETRI_TRANSITIONS=334} [2021-03-26 08:09:31,533 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2021-03-26 08:09:31,533 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:31,533 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 334 transitions, 14756 flow [2021-03-26 08:09:31,533 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 334 transitions, 14756 flow [2021-03-26 08:09:31,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 267 places, 334 transitions, 14756 flow [2021-03-26 08:09:31,660 INFO L129 PetriNetUnfolder]: 235/824 cut-off events. [2021-03-26 08:09:31,660 INFO L130 PetriNetUnfolder]: For 92453/93555 co-relation queries the response was YES. [2021-03-26 08:09:31,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12592 conditions, 824 events. 235/824 cut-off events. For 92453/93555 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7046 event pairs, 0 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 12480. Up to 283 conditions per place. [2021-03-26 08:09:31,675 INFO L142 LiptonReduction]: Number of co-enabled transitions 1668 [2021-03-26 08:09:31,702 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:09:31,702 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:09:31,702 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 169 [2021-03-26 08:09:31,703 INFO L480 AbstractCegarLoop]: Abstraction has has 267 places, 334 transitions, 14756 flow [2021-03-26 08:09:31,703 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 08:09:31,703 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:31,703 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:31,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:31,904 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:31,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1816771607, now seen corresponding path program 1 times [2021-03-26 08:09:31,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:31,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125652774] [2021-03-26 08:09:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:31,915 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:31,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:31,920 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:09:31,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:31,925 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:31,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:31,932 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-26 08:09:31,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 08:09:31,940 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:31,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:31,946 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 08:09:31,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125652774] [2021-03-26 08:09:31,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528176028] [2021-03-26 08:09:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:31,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:32,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:32,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:32,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:32,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:32,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:32,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:32,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:32,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:32,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:32,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:32,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:32,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:32,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:32,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:32,054 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-03-26 08:09:32,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 08:09:32,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 08:09:32,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:32,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:32,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:32,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:32,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:32,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:32,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:32,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:32,081 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 08:09:32,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:32,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-26 08:09:32,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914822951] [2021-03-26 08:09:32,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 08:09:32,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:32,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 08:09:32,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-26 08:09:32,082 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 307 [2021-03-26 08:09:32,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 334 transitions, 14756 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 08:09:32,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:32,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 307 [2021-03-26 08:09:32,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:32,670 INFO L129 PetriNetUnfolder]: 237/832 cut-off events. [2021-03-26 08:09:32,670 INFO L130 PetriNetUnfolder]: For 95258/96844 co-relation queries the response was YES. [2021-03-26 08:09:32,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13196 conditions, 832 events. 237/832 cut-off events. For 95258/96844 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7106 event pairs, 0 based on Foata normal form. 79/844 useless extension candidates. Maximal degree in co-relation 13082. Up to 370 conditions per place. [2021-03-26 08:09:32,681 INFO L132 encePairwiseOnDemand]: 241/307 looper letters, 228 selfloop transitions, 103 changer transitions 0/341 dead transitions. [2021-03-26 08:09:32,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 341 transitions, 15811 flow [2021-03-26 08:09:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-26 08:09:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-26 08:09:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1128 transitions. [2021-03-26 08:09:32,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.30618892508143325 [2021-03-26 08:09:32,683 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1128 transitions. [2021-03-26 08:09:32,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1128 transitions. [2021-03-26 08:09:32,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:32,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1128 transitions. [2021-03-26 08:09:32,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states 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 08:09:32,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 307.0) internal successors, (3991), 13 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states 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 08:09:32,686 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 307.0) internal successors, (3991), 13 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states 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 08:09:32,686 INFO L185 Difference]: Start difference. First operand has 267 places, 334 transitions, 14756 flow. Second operand 12 states and 1128 transitions. [2021-03-26 08:09:32,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 341 transitions, 15811 flow [2021-03-26 08:09:33,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 341 transitions, 15682 flow, removed 29 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:33,023 INFO L241 Difference]: Finished difference. Result has 275 places, 336 transitions, 15058 flow [2021-03-26 08:09:33,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=14630, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15058, PETRI_PLACES=275, PETRI_TRANSITIONS=336} [2021-03-26 08:09:33,024 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2021-03-26 08:09:33,024 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:33,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 336 transitions, 15058 flow [2021-03-26 08:09:33,024 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 336 transitions, 15058 flow [2021-03-26 08:09:33,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 275 places, 336 transitions, 15058 flow [2021-03-26 08:09:33,168 INFO L129 PetriNetUnfolder]: 237/832 cut-off events. [2021-03-26 08:09:33,168 INFO L130 PetriNetUnfolder]: For 91338/92246 co-relation queries the response was YES. [2021-03-26 08:09:33,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12808 conditions, 832 events. 237/832 cut-off events. For 91338/92246 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7115 event pairs, 0 based on Foata normal form. 0/764 useless extension candidates. Maximal degree in co-relation 12695. Up to 287 conditions per place. [2021-03-26 08:09:33,185 INFO L142 LiptonReduction]: Number of co-enabled transitions 1676 [2021-03-26 08:09:33,264 INFO L154 LiptonReduction]: Checked pairs total: 135 [2021-03-26 08:09:33,264 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:33,264 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 240 [2021-03-26 08:09:33,264 INFO L480 AbstractCegarLoop]: Abstraction has has 275 places, 336 transitions, 15058 flow [2021-03-26 08:09:33,264 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 08:09:33,264 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:33,265 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:33,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-03-26 08:09:33,465 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:33,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:33,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1218550878, now seen corresponding path program 1 times [2021-03-26 08:09:33,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:33,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898878434] [2021-03-26 08:09:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:33,476 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:33,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,481 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:33,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,487 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-26 08:09:33,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,493 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-26 08:09:33,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,501 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 08:09:33,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898878434] [2021-03-26 08:09:33,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16220443] [2021-03-26 08:09:33,501 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 08:09:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:33,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:33,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:33,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:33,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:33,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:33,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:33,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:33,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:33,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:33,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:33,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:33,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:33,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:33,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:33,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:33,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:33,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:33,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:33,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:33,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:33,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:33,612 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:33,612 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:33,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:33,621 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 08:09:33,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:33,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:09:33,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384159932] [2021-03-26 08:09:33,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:09:33,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:33,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:09:33,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:09:33,622 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 308 [2021-03-26 08:09:33,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 336 transitions, 15058 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:33,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:33,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 308 [2021-03-26 08:09:33,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:34,453 INFO L129 PetriNetUnfolder]: 252/892 cut-off events. [2021-03-26 08:09:34,454 INFO L130 PetriNetUnfolder]: For 108052/109640 co-relation queries the response was YES. [2021-03-26 08:09:34,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14335 conditions, 892 events. 252/892 cut-off events. For 108052/109640 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7592 event pairs, 0 based on Foata normal form. 42/866 useless extension candidates. Maximal degree in co-relation 14220. Up to 412 conditions per place. [2021-03-26 08:09:34,466 INFO L132 encePairwiseOnDemand]: 215/308 looper letters, 223 selfloop transitions, 122 changer transitions 0/355 dead transitions. [2021-03-26 08:09:34,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 355 transitions, 16923 flow [2021-03-26 08:09:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 822 transitions. [2021-03-26 08:09:34,467 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3812615955473098 [2021-03-26 08:09:34,467 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 822 transitions. [2021-03-26 08:09:34,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 822 transitions. [2021-03-26 08:09:34,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:34,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 822 transitions. [2021-03-26 08:09:34,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 08:09:34,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 308.0) internal successors, (2464), 8 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:09:34,470 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 308.0) internal successors, (2464), 8 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:09:34,470 INFO L185 Difference]: Start difference. First operand has 275 places, 336 transitions, 15058 flow. Second operand 7 states and 822 transitions. [2021-03-26 08:09:34,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 355 transitions, 16923 flow [2021-03-26 08:09:34,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 355 transitions, 16628 flow, removed 59 selfloop flow, removed 7 redundant places. [2021-03-26 08:09:34,744 INFO L241 Difference]: Finished difference. Result has 276 places, 355 transitions, 16333 flow [2021-03-26 08:09:34,744 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=14771, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16333, PETRI_PLACES=276, PETRI_TRANSITIONS=355} [2021-03-26 08:09:34,744 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2021-03-26 08:09:34,744 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:34,744 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 355 transitions, 16333 flow [2021-03-26 08:09:34,744 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 355 transitions, 16333 flow [2021-03-26 08:09:34,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 276 places, 355 transitions, 16333 flow [2021-03-26 08:09:34,879 INFO L129 PetriNetUnfolder]: 252/892 cut-off events. [2021-03-26 08:09:34,879 INFO L130 PetriNetUnfolder]: For 107986/108537 co-relation queries the response was YES. [2021-03-26 08:09:34,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14033 conditions, 892 events. 252/892 cut-off events. For 107986/108537 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7644 event pairs, 0 based on Foata normal form. 6/830 useless extension candidates. Maximal degree in co-relation 13918. Up to 317 conditions per place. [2021-03-26 08:09:34,897 INFO L142 LiptonReduction]: Number of co-enabled transitions 1752 [2021-03-26 08:09:35,129 INFO L154 LiptonReduction]: Checked pairs total: 1937 [2021-03-26 08:09:35,129 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-26 08:09:35,130 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 385 [2021-03-26 08:09:35,130 INFO L480 AbstractCegarLoop]: Abstraction has has 276 places, 355 transitions, 16347 flow [2021-03-26 08:09:35,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:35,130 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:35,130 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:35,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:35,331 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:35,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1326862646, now seen corresponding path program 1 times [2021-03-26 08:09:35,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:35,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919365921] [2021-03-26 08:09:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:35,343 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:35,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,347 INFO L142 QuantifierPusher]: treesize reduction 2, result has 81.8 percent of original size [2021-03-26 08:09:35,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,353 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:35,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,360 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:09:35,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,367 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 08:09:35,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919365921] [2021-03-26 08:09:35,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282872193] [2021-03-26 08:09:35,368 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 08:09:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:35,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:35,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:35,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:35,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:35,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:35,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:35,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:35,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:35,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:35,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:35,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:35,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:35,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:35,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:35,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:35,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:35,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:35,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:35,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:35,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:35,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:35,515 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 08:09:35,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:35,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:09:35,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375880671] [2021-03-26 08:09:35,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:09:35,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:35,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:09:35,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:09:35,517 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 317 [2021-03-26 08:09:35,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 355 transitions, 16347 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:35,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:35,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 317 [2021-03-26 08:09:35,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:36,206 INFO L129 PetriNetUnfolder]: 264/935 cut-off events. [2021-03-26 08:09:36,206 INFO L130 PetriNetUnfolder]: For 119262/120477 co-relation queries the response was YES. [2021-03-26 08:09:36,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15280 conditions, 935 events. 264/935 cut-off events. For 119262/120477 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8111 event pairs, 0 based on Foata normal form. 80/942 useless extension candidates. Maximal degree in co-relation 15163. Up to 420 conditions per place. [2021-03-26 08:09:36,220 INFO L132 encePairwiseOnDemand]: 190/317 looper letters, 213 selfloop transitions, 147 changer transitions 0/370 dead transitions. [2021-03-26 08:09:36,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 370 transitions, 17900 flow [2021-03-26 08:09:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:36,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1010 transitions. [2021-03-26 08:09:36,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.35401331931300384 [2021-03-26 08:09:36,222 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1010 transitions. [2021-03-26 08:09:36,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1010 transitions. [2021-03-26 08:09:36,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:36,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1010 transitions. [2021-03-26 08:09:36,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:36,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 317.0) internal successors, (3170), 10 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states 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 08:09:36,225 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 317.0) internal successors, (3170), 10 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states 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 08:09:36,225 INFO L185 Difference]: Start difference. First operand has 276 places, 355 transitions, 16347 flow. Second operand 9 states and 1010 transitions. [2021-03-26 08:09:36,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 370 transitions, 17900 flow [2021-03-26 08:09:36,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 370 transitions, 17713 flow, removed 66 selfloop flow, removed 3 redundant places. [2021-03-26 08:09:36,559 INFO L241 Difference]: Finished difference. Result has 283 places, 369 transitions, 17356 flow [2021-03-26 08:09:36,559 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=317, PETRI_DIFFERENCE_MINUEND_FLOW=16160, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17356, PETRI_PLACES=283, PETRI_TRANSITIONS=369} [2021-03-26 08:09:36,559 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2021-03-26 08:09:36,559 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:36,560 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 369 transitions, 17356 flow [2021-03-26 08:09:36,560 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 369 transitions, 17356 flow [2021-03-26 08:09:36,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 283 places, 369 transitions, 17356 flow [2021-03-26 08:09:36,729 INFO L129 PetriNetUnfolder]: 264/935 cut-off events. [2021-03-26 08:09:36,729 INFO L130 PetriNetUnfolder]: For 115465/116281 co-relation queries the response was YES. [2021-03-26 08:09:36,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14924 conditions, 935 events. 264/935 cut-off events. For 115465/116281 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8161 event pairs, 0 based on Foata normal form. 6/867 useless extension candidates. Maximal degree in co-relation 14806. Up to 333 conditions per place. [2021-03-26 08:09:36,753 INFO L142 LiptonReduction]: Number of co-enabled transitions 1808 [2021-03-26 08:09:36,884 INFO L154 LiptonReduction]: Checked pairs total: 636 [2021-03-26 08:09:36,884 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:09:36,885 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 326 [2021-03-26 08:09:36,885 INFO L480 AbstractCegarLoop]: Abstraction has has 283 places, 369 transitions, 17360 flow [2021-03-26 08:09:36,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:36,885 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:36,885 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:37,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-03-26 08:09:37,086 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:37,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1223322739, now seen corresponding path program 1 times [2021-03-26 08:09:37,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:37,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087026438] [2021-03-26 08:09:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:37,097 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:37,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,103 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:37,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,109 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:37,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:37,119 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-26 08:09:37,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,126 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 08:09:37,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087026438] [2021-03-26 08:09:37,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139456506] [2021-03-26 08:09:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 08:09:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:37,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-26 08:09:37,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:37,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:37,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:37,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:37,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:37,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:37,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:37,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:37,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:37,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:37,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:37,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:37,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:37,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,232 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:37,232 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:37,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:37,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:37,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:37,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 08:09:37,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:37,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:37,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-26 08:09:37,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:37,258 INFO L147 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size 20 [2021-03-26 08:09:37,258 INFO L142 QuantifierPusher]: treesize reduction -2, result has 111.1 percent of original size [2021-03-26 08:09:37,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:09:37,270 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 08:09:37,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:37,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-26 08:09:37,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459046497] [2021-03-26 08:09:37,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 08:09:37,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 08:09:37,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-03-26 08:09:37,272 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 320 [2021-03-26 08:09:37,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 369 transitions, 17360 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:37,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:37,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 320 [2021-03-26 08:09:37,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:38,098 INFO L129 PetriNetUnfolder]: 277/977 cut-off events. [2021-03-26 08:09:38,099 INFO L130 PetriNetUnfolder]: For 129246/130687 co-relation queries the response was YES. [2021-03-26 08:09:38,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16425 conditions, 977 events. 277/977 cut-off events. For 129246/130687 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8548 event pairs, 0 based on Foata normal form. 80/980 useless extension candidates. Maximal degree in co-relation 16305. Up to 391 conditions per place. [2021-03-26 08:09:38,114 INFO L132 encePairwiseOnDemand]: 153/320 looper letters, 163 selfloop transitions, 208 changer transitions 0/381 dead transitions. [2021-03-26 08:09:38,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 381 transitions, 19058 flow [2021-03-26 08:09:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1033 transitions. [2021-03-26 08:09:38,116 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.35868055555555556 [2021-03-26 08:09:38,116 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1033 transitions. [2021-03-26 08:09:38,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1033 transitions. [2021-03-26 08:09:38,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:38,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1033 transitions. [2021-03-26 08:09:38,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.77777777777777) internal successors, (1033), 9 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states 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 08:09:38,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states 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 08:09:38,118 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states 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 08:09:38,118 INFO L185 Difference]: Start difference. First operand has 283 places, 369 transitions, 17360 flow. Second operand 9 states and 1033 transitions. [2021-03-26 08:09:38,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 381 transitions, 19058 flow [2021-03-26 08:09:38,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 381 transitions, 18783 flow, removed 106 selfloop flow, removed 6 redundant places. [2021-03-26 08:09:38,464 INFO L241 Difference]: Finished difference. Result has 287 places, 379 transitions, 18470 flow [2021-03-26 08:09:38,464 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=17085, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18470, PETRI_PLACES=287, PETRI_TRANSITIONS=379} [2021-03-26 08:09:38,464 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2021-03-26 08:09:38,464 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:38,464 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 379 transitions, 18470 flow [2021-03-26 08:09:38,464 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 379 transitions, 18470 flow [2021-03-26 08:09:38,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 287 places, 379 transitions, 18470 flow [2021-03-26 08:09:38,660 INFO L129 PetriNetUnfolder]: 277/977 cut-off events. [2021-03-26 08:09:38,660 INFO L130 PetriNetUnfolder]: For 131619/132513 co-relation queries the response was YES. [2021-03-26 08:09:38,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16211 conditions, 977 events. 277/977 cut-off events. For 131619/132513 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8719 event pairs, 0 based on Foata normal form. 4/903 useless extension candidates. Maximal degree in co-relation 16092. Up to 349 conditions per place. [2021-03-26 08:09:38,681 INFO L142 LiptonReduction]: Number of co-enabled transitions 1848 [2021-03-26 08:09:38,853 INFO L154 LiptonReduction]: Checked pairs total: 547 [2021-03-26 08:09:38,854 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:09:38,854 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 390 [2021-03-26 08:09:38,854 INFO L480 AbstractCegarLoop]: Abstraction has has 287 places, 379 transitions, 18472 flow [2021-03-26 08:09:38,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:38,854 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:38,854 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:39,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:39,055 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:39,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:39,055 INFO L82 PathProgramCache]: Analyzing trace with hash 448227259, now seen corresponding path program 1 times [2021-03-26 08:09:39,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:39,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620455265] [2021-03-26 08:09:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:39,075 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:39,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,080 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:39,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,086 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:39,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,093 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:39,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,101 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 08:09:39,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:39,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-26 08:09:39,111 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:39,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620455265] [2021-03-26 08:09:39,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715203885] [2021-03-26 08:09:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:39,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-26 08:09:39,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:39,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:39,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:39,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:39,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:39,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:39,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,221 INFO L147 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size 15 [2021-03-26 08:09:39,221 INFO L142 QuantifierPusher]: treesize reduction -1, result has 107.1 percent of original size [2021-03-26 08:09:39,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:39,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:39,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:39,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-26 08:09:39,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:39,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 08:09:39,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:39,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 08:09:39,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:39,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 08:09:39,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:39,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:39,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-26 08:09:39,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:39,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 08:09:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:39,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:39,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-26 08:09:39,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236701246] [2021-03-26 08:09:39,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-26 08:09:39,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:39,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-26 08:09:39,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-03-26 08:09:39,296 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 323 [2021-03-26 08:09:39,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 379 transitions, 18472 flow. Second operand has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:39,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:39,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 323 [2021-03-26 08:09:39,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:40,675 INFO L129 PetriNetUnfolder]: 324/1148 cut-off events. [2021-03-26 08:09:40,676 INFO L130 PetriNetUnfolder]: For 174069/175592 co-relation queries the response was YES. [2021-03-26 08:09:40,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20315 conditions, 1148 events. 324/1148 cut-off events. For 174069/175592 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10231 event pairs, 0 based on Foata normal form. 25/1082 useless extension candidates. Maximal degree in co-relation 20194. Up to 429 conditions per place. [2021-03-26 08:09:40,693 INFO L132 encePairwiseOnDemand]: 128/323 looper letters, 111 selfloop transitions, 302 changer transitions 0/423 dead transitions. [2021-03-26 08:09:40,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 423 transitions, 22085 flow [2021-03-26 08:09:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-26 08:09:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-26 08:09:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1846 transitions. [2021-03-26 08:09:40,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3175094599243206 [2021-03-26 08:09:40,696 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1846 transitions. [2021-03-26 08:09:40,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1846 transitions. [2021-03-26 08:09:40,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:40,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1846 transitions. [2021-03-26 08:09:40,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.55555555555556) internal successors, (1846), 18 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states 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 08:09:40,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 323.0) internal successors, (6137), 19 states have internal predecessors, (6137), 0 states have call successors, (0), 0 states 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 08:09:40,702 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 323.0) internal successors, (6137), 19 states have internal predecessors, (6137), 0 states have call successors, (0), 0 states 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 08:09:40,702 INFO L185 Difference]: Start difference. First operand has 287 places, 379 transitions, 18472 flow. Second operand 18 states and 1846 transitions. [2021-03-26 08:09:40,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 423 transitions, 22085 flow [2021-03-26 08:09:41,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 423 transitions, 21808 flow, removed 105 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:41,081 INFO L241 Difference]: Finished difference. Result has 302 places, 420 transitions, 21519 flow [2021-03-26 08:09:41,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=18247, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=21519, PETRI_PLACES=302, PETRI_TRANSITIONS=420} [2021-03-26 08:09:41,081 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2021-03-26 08:09:41,081 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:41,081 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 420 transitions, 21519 flow [2021-03-26 08:09:41,082 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 420 transitions, 21519 flow [2021-03-26 08:09:41,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 302 places, 420 transitions, 21519 flow [2021-03-26 08:09:41,285 INFO L129 PetriNetUnfolder]: 324/1150 cut-off events. [2021-03-26 08:09:41,285 INFO L130 PetriNetUnfolder]: For 178040/179544 co-relation queries the response was YES. [2021-03-26 08:09:41,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20099 conditions, 1150 events. 324/1150 cut-off events. For 178040/179544 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10329 event pairs, 3 based on Foata normal form. 11/1069 useless extension candidates. Maximal degree in co-relation 19979. Up to 407 conditions per place. [2021-03-26 08:09:41,347 INFO L142 LiptonReduction]: Number of co-enabled transitions 2022 [2021-03-26 08:09:41,910 INFO L154 LiptonReduction]: Checked pairs total: 2808 [2021-03-26 08:09:41,910 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-26 08:09:41,910 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 829 [2021-03-26 08:09:41,910 INFO L480 AbstractCegarLoop]: Abstraction has has 302 places, 420 transitions, 21573 flow [2021-03-26 08:09:41,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:41,911 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:41,911 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:42,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-03-26 08:09:42,111 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash -152279712, now seen corresponding path program 1 times [2021-03-26 08:09:42,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:42,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594843211] [2021-03-26 08:09:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:42,125 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:42,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,130 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:42,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,137 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:42,137 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:42,151 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:42,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,160 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:42,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,169 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:42,170 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:42,182 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 08:09:42,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594843211] [2021-03-26 08:09:42,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621686251] [2021-03-26 08:09:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:42,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-26 08:09:42,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:42,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:42,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:42,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:42,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:42,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:42,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:42,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:42,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:42,271 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:42,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:42,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:42,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:42,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:42,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:42,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:42,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:42,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:42,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:42,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:42,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:42,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:42,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:42,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:42,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:42,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:42,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:42,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:42,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:42,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:42,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:42,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:42,341 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:42,342 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:42,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:42,356 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 08:09:42,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:42,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-26 08:09:42,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301840669] [2021-03-26 08:09:42,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-26 08:09:42,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:42,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-26 08:09:42,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-03-26 08:09:42,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 338 [2021-03-26 08:09:42,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 420 transitions, 21573 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:42,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:42,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 338 [2021-03-26 08:09:42,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:43,384 INFO L129 PetriNetUnfolder]: 329/1168 cut-off events. [2021-03-26 08:09:43,384 INFO L130 PetriNetUnfolder]: For 174225/176367 co-relation queries the response was YES. [2021-03-26 08:09:43,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21081 conditions, 1168 events. 329/1168 cut-off events. For 174225/176367 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10654 event pairs, 2 based on Foata normal form. 60/1135 useless extension candidates. Maximal degree in co-relation 20959. Up to 531 conditions per place. [2021-03-26 08:09:43,402 INFO L132 encePairwiseOnDemand]: 279/338 looper letters, 312 selfloop transitions, 113 changer transitions 0/435 dead transitions. [2021-03-26 08:09:43,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 435 transitions, 23263 flow [2021-03-26 08:09:43,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 930 transitions. [2021-03-26 08:09:43,404 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3057199211045365 [2021-03-26 08:09:43,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 930 transitions. [2021-03-26 08:09:43,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 930 transitions. [2021-03-26 08:09:43,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:43,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 930 transitions. [2021-03-26 08:09:43,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.33333333333333) internal successors, (930), 9 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:43,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 338.0) internal successors, (3380), 10 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states 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 08:09:43,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 338.0) internal successors, (3380), 10 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states 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 08:09:43,406 INFO L185 Difference]: Start difference. First operand has 302 places, 420 transitions, 21573 flow. Second operand 9 states and 930 transitions. [2021-03-26 08:09:43,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 435 transitions, 23263 flow [2021-03-26 08:09:43,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 435 transitions, 22560 flow, removed 238 selfloop flow, removed 8 redundant places. [2021-03-26 08:09:43,823 INFO L241 Difference]: Finished difference. Result has 303 places, 425 transitions, 21478 flow [2021-03-26 08:09:43,823 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=20908, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21478, PETRI_PLACES=303, PETRI_TRANSITIONS=425} [2021-03-26 08:09:43,823 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2021-03-26 08:09:43,824 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:43,824 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 425 transitions, 21478 flow [2021-03-26 08:09:43,824 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 425 transitions, 21478 flow [2021-03-26 08:09:43,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 303 places, 425 transitions, 21478 flow [2021-03-26 08:09:44,055 INFO L129 PetriNetUnfolder]: 329/1168 cut-off events. [2021-03-26 08:09:44,055 INFO L130 PetriNetUnfolder]: For 161357/162444 co-relation queries the response was YES. [2021-03-26 08:09:44,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19781 conditions, 1168 events. 329/1168 cut-off events. For 161357/162444 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10668 event pairs, 4 based on Foata normal form. 9/1082 useless extension candidates. Maximal degree in co-relation 19660. Up to 394 conditions per place. [2021-03-26 08:09:44,080 INFO L142 LiptonReduction]: Number of co-enabled transitions 2042 [2021-03-26 08:09:44,288 INFO L154 LiptonReduction]: Checked pairs total: 1048 [2021-03-26 08:09:44,288 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:09:44,288 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 465 [2021-03-26 08:09:44,288 INFO L480 AbstractCegarLoop]: Abstraction has has 303 places, 425 transitions, 21482 flow [2021-03-26 08:09:44,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:44,288 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:44,289 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:44,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-03-26 08:09:44,489 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:44,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1286656435, now seen corresponding path program 1 times [2021-03-26 08:09:44,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:44,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486526468] [2021-03-26 08:09:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:44,506 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:44,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,511 INFO L142 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-03-26 08:09:44,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:44,517 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:44,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:44,525 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:44,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:09:44,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486526468] [2021-03-26 08:09:44,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255501844] [2021-03-26 08:09:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:44,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-26 08:09:44,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:44,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:44,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:44,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:44,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:44,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:44,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:44,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:44,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:44,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:44,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:44,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:44,626 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-26 08:09:44,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:44,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:44,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:44,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:44,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:44,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:44,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:44,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:44,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:44,639 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:44,639 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:44,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:44,643 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 08:09:44,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:44,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-03-26 08:09:44,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630684847] [2021-03-26 08:09:44,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 08:09:44,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:44,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 08:09:44,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-26 08:09:44,644 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 343 [2021-03-26 08:09:44,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 425 transitions, 21482 flow. Second operand has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:44,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:44,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 343 [2021-03-26 08:09:44,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:45,389 INFO L129 PetriNetUnfolder]: 333/1186 cut-off events. [2021-03-26 08:09:45,389 INFO L130 PetriNetUnfolder]: For 164733/166252 co-relation queries the response was YES. [2021-03-26 08:09:45,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20712 conditions, 1186 events. 333/1186 cut-off events. For 164733/166252 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10888 event pairs, 2 based on Foata normal form. 42/1132 useless extension candidates. Maximal degree in co-relation 20589. Up to 582 conditions per place. [2021-03-26 08:09:45,407 INFO L132 encePairwiseOnDemand]: 296/343 looper letters, 358 selfloop transitions, 72 changer transitions 0/440 dead transitions. [2021-03-26 08:09:45,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 440 transitions, 23191 flow [2021-03-26 08:09:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 08:09:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 08:09:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 771 transitions. [2021-03-26 08:09:45,412 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3211162015826739 [2021-03-26 08:09:45,412 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 771 transitions. [2021-03-26 08:09:45,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 771 transitions. [2021-03-26 08:09:45,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:45,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 771 transitions. [2021-03-26 08:09:45,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 08:09:45,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 343.0) internal successors, (2744), 8 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 08:09:45,414 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 343.0) internal successors, (2744), 8 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 08:09:45,414 INFO L185 Difference]: Start difference. First operand has 303 places, 425 transitions, 21482 flow. Second operand 7 states and 771 transitions. [2021-03-26 08:09:45,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 440 transitions, 23191 flow [2021-03-26 08:09:45,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 440 transitions, 23062 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-26 08:09:45,828 INFO L241 Difference]: Finished difference. Result has 304 places, 429 transitions, 21830 flow [2021-03-26 08:09:45,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=21353, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21830, PETRI_PLACES=304, PETRI_TRANSITIONS=429} [2021-03-26 08:09:45,828 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2021-03-26 08:09:45,828 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:45,828 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 429 transitions, 21830 flow [2021-03-26 08:09:45,828 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 429 transitions, 21830 flow [2021-03-26 08:09:45,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 304 places, 429 transitions, 21830 flow [2021-03-26 08:09:46,041 INFO L129 PetriNetUnfolder]: 333/1186 cut-off events. [2021-03-26 08:09:46,041 INFO L130 PetriNetUnfolder]: For 164751/165802 co-relation queries the response was YES. [2021-03-26 08:09:46,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20138 conditions, 1186 events. 333/1186 cut-off events. For 164751/165802 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10923 event pairs, 2 based on Foata normal form. 2/1093 useless extension candidates. Maximal degree in co-relation 20016. Up to 400 conditions per place. [2021-03-26 08:09:46,072 INFO L142 LiptonReduction]: Number of co-enabled transitions 2060 [2021-03-26 08:09:46,195 INFO L154 LiptonReduction]: Checked pairs total: 156 [2021-03-26 08:09:46,196 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:46,196 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 368 [2021-03-26 08:09:46,196 INFO L480 AbstractCegarLoop]: Abstraction has has 304 places, 429 transitions, 21830 flow [2021-03-26 08:09:46,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:46,196 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:46,196 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:46,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-03-26 08:09:46,397 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash 797771044, now seen corresponding path program 1 times [2021-03-26 08:09:46,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:46,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843476122] [2021-03-26 08:09:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:46,411 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:46,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,416 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:46,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,422 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:46,423 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:46,437 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:46,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,445 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:46,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,454 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:46,455 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:46,468 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 08:09:46,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843476122] [2021-03-26 08:09:46,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213139394] [2021-03-26 08:09:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:46,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-26 08:09:46,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:46,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:46,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:46,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:46,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:46,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:46,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:46,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:46,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:46,578 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:46,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:46,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:46,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:46,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:46,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:46,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:46,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:46,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:46,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:46,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:46,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:46,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:46,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:46,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:46,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:46,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:46,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:46,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:46,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:46,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:46,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:46,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:46,649 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:46,650 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:46,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:46,664 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 08:09:46,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:46,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-26 08:09:46,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217676669] [2021-03-26 08:09:46,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-26 08:09:46,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:46,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-26 08:09:46,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-03-26 08:09:46,666 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 344 [2021-03-26 08:09:46,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 429 transitions, 21830 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:46,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:46,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 344 [2021-03-26 08:09:46,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:47,847 INFO L129 PetriNetUnfolder]: 337/1202 cut-off events. [2021-03-26 08:09:47,848 INFO L130 PetriNetUnfolder]: For 168373/169913 co-relation queries the response was YES. [2021-03-26 08:09:47,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21018 conditions, 1202 events. 337/1202 cut-off events. For 168373/169913 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11097 event pairs, 1 based on Foata normal form. 60/1164 useless extension candidates. Maximal degree in co-relation 20894. Up to 504 conditions per place. [2021-03-26 08:09:47,866 INFO L132 encePairwiseOnDemand]: 267/344 looper letters, 278 selfloop transitions, 155 changer transitions 0/443 dead transitions. [2021-03-26 08:09:47,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 443 transitions, 23457 flow [2021-03-26 08:09:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 940 transitions. [2021-03-26 08:09:47,868 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.30361757105943155 [2021-03-26 08:09:47,868 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 940 transitions. [2021-03-26 08:09:47,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 940 transitions. [2021-03-26 08:09:47,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:47,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 940 transitions. [2021-03-26 08:09:47,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.44444444444444) internal successors, (940), 9 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 08:09:47,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states 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 08:09:47,870 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 344.0) internal successors, (3440), 10 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states 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 08:09:47,870 INFO L185 Difference]: Start difference. First operand has 304 places, 429 transitions, 21830 flow. Second operand 9 states and 940 transitions. [2021-03-26 08:09:47,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 443 transitions, 23457 flow [2021-03-26 08:09:48,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 443 transitions, 23375 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:48,283 INFO L241 Difference]: Finished difference. Result has 309 places, 433 transitions, 22389 flow [2021-03-26 08:09:48,284 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=21748, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22389, PETRI_PLACES=309, PETRI_TRANSITIONS=433} [2021-03-26 08:09:48,284 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2021-03-26 08:09:48,284 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:48,284 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 433 transitions, 22389 flow [2021-03-26 08:09:48,284 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 433 transitions, 22389 flow [2021-03-26 08:09:48,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 309 places, 433 transitions, 22389 flow [2021-03-26 08:09:48,500 INFO L129 PetriNetUnfolder]: 337/1204 cut-off events. [2021-03-26 08:09:48,500 INFO L130 PetriNetUnfolder]: For 172318/173626 co-relation queries the response was YES. [2021-03-26 08:09:48,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20573 conditions, 1204 events. 337/1204 cut-off events. For 172318/173626 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 11215 event pairs, 2 based on Foata normal form. 3/1103 useless extension candidates. Maximal degree in co-relation 20450. Up to 406 conditions per place. [2021-03-26 08:09:48,526 INFO L142 LiptonReduction]: Number of co-enabled transitions 2076 [2021-03-26 08:09:48,664 INFO L154 LiptonReduction]: Checked pairs total: 156 [2021-03-26 08:09:48,664 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:09:48,664 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 380 [2021-03-26 08:09:48,665 INFO L480 AbstractCegarLoop]: Abstraction has has 309 places, 433 transitions, 22389 flow [2021-03-26 08:09:48,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:48,665 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:48,665 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:48,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-03-26 08:09:48,868 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash -283677681, now seen corresponding path program 1 times [2021-03-26 08:09:48,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:48,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642410031] [2021-03-26 08:09:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:48,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,887 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 08:09:48,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642410031] [2021-03-26 08:09:48,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951854364] [2021-03-26 08:09:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:48,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-26 08:09:48,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:48,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:48,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:48,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:48,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:48,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:48,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:48,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:48,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:48,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:48,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:48,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:48,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:09:48,956 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-26 08:09:48,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:48,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:09:48,961 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 08:09:48,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-26 08:09:48,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-03-26 08:09:48,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412906262] [2021-03-26 08:09:48,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 08:09:48,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:48,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 08:09:48,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:09:48,963 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 345 [2021-03-26 08:09:48,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 433 transitions, 22389 flow. Second operand has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states 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 08:09:48,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:48,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 345 [2021-03-26 08:09:48,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:49,649 INFO L129 PetriNetUnfolder]: 355/1260 cut-off events. [2021-03-26 08:09:49,649 INFO L130 PetriNetUnfolder]: For 203664/205157 co-relation queries the response was YES. [2021-03-26 08:09:49,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22486 conditions, 1260 events. 355/1260 cut-off events. For 203664/205157 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11716 event pairs, 2 based on Foata normal form. 179/1323 useless extension candidates. Maximal degree in co-relation 22361. Up to 442 conditions per place. [2021-03-26 08:09:49,670 INFO L132 encePairwiseOnDemand]: 327/345 looper letters, 122 selfloop transitions, 15 changer transitions 0/432 dead transitions. [2021-03-26 08:09:49,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 432 transitions, 22462 flow [2021-03-26 08:09:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 08:09:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 08:09:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1201 transitions. [2021-03-26 08:09:49,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.696231884057971 [2021-03-26 08:09:49,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1201 transitions. [2021-03-26 08:09:49,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1201 transitions. [2021-03-26 08:09:49,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:49,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1201 transitions. [2021-03-26 08:09:49,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 240.2) internal successors, (1201), 5 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 08:09:49,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 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 08:09:49,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 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 08:09:49,674 INFO L185 Difference]: Start difference. First operand has 309 places, 433 transitions, 22389 flow. Second operand 5 states and 1201 transitions. [2021-03-26 08:09:49,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 432 transitions, 22462 flow [2021-03-26 08:09:50,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 432 transitions, 22304 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-26 08:09:50,155 INFO L241 Difference]: Finished difference. Result has 310 places, 431 transitions, 22103 flow [2021-03-26 08:09:50,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=21761, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=22103, PETRI_PLACES=310, PETRI_TRANSITIONS=431} [2021-03-26 08:09:50,156 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2021-03-26 08:09:50,156 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:50,156 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 431 transitions, 22103 flow [2021-03-26 08:09:50,156 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 431 transitions, 22103 flow [2021-03-26 08:09:50,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 310 places, 431 transitions, 22103 flow [2021-03-26 08:09:50,389 INFO L129 PetriNetUnfolder]: 355/1262 cut-off events. [2021-03-26 08:09:50,390 INFO L130 PetriNetUnfolder]: For 203288/205041 co-relation queries the response was YES. [2021-03-26 08:09:50,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22247 conditions, 1262 events. 355/1262 cut-off events. For 203288/205041 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11761 event pairs, 3 based on Foata normal form. 35/1172 useless extension candidates. Maximal degree in co-relation 22123. Up to 415 conditions per place. [2021-03-26 08:09:50,419 INFO L142 LiptonReduction]: Number of co-enabled transitions 2102 [2021-03-26 08:09:50,810 INFO L154 LiptonReduction]: Checked pairs total: 674 [2021-03-26 08:09:50,810 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:09:50,810 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 654 [2021-03-26 08:09:50,810 INFO L480 AbstractCegarLoop]: Abstraction has has 310 places, 431 transitions, 22143 flow [2021-03-26 08:09:50,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states 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 08:09:50,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:50,811 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:51,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:51,011 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:51,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:51,011 INFO L82 PathProgramCache]: Analyzing trace with hash 937787372, now seen corresponding path program 1 times [2021-03-26 08:09:51,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:51,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758448615] [2021-03-26 08:09:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:51,023 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:51,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,029 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-03-26 08:09:51,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:51,036 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:51,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,043 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-03-26 08:09:51,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:51,061 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:51,061 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:51,074 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 08:09:51,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758448615] [2021-03-26 08:09:51,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449327347] [2021-03-26 08:09:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:51,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-26 08:09:51,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:51,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:51,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:51,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 08:09:51,142 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-26 08:09:51,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:51,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:51,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:51,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:51,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:51,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 08:09:51,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:51,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:51,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:51,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:51,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:51,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:51,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:51,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:51,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:51,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:51,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:51,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:51,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:51,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:51,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:51,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:51,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:51,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:51,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:51,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,195 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:51,195 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:51,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:51,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:51,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:51,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:51,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:51,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:51,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:51,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:51,218 INFO L147 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size 13 [2021-03-26 08:09:51,219 INFO L142 QuantifierPusher]: treesize reduction -1, result has 108.3 percent of original size [2021-03-26 08:09:51,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 08:09:51,234 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 08:09:51,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:51,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-03-26 08:09:51,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90350993] [2021-03-26 08:09:51,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-26 08:09:51,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:51,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-26 08:09:51,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-03-26 08:09:51,236 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 350 [2021-03-26 08:09:51,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 431 transitions, 22143 flow. Second operand has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:51,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:51,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 350 [2021-03-26 08:09:51,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:52,400 INFO L129 PetriNetUnfolder]: 357/1269 cut-off events. [2021-03-26 08:09:52,401 INFO L130 PetriNetUnfolder]: For 196499/198107 co-relation queries the response was YES. [2021-03-26 08:09:52,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23097 conditions, 1269 events. 357/1269 cut-off events. For 196499/198107 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11847 event pairs, 3 based on Foata normal form. 44/1193 useless extension candidates. Maximal degree in co-relation 22971. Up to 621 conditions per place. [2021-03-26 08:09:52,422 INFO L132 encePairwiseOnDemand]: 297/350 looper letters, 356 selfloop transitions, 82 changer transitions 0/449 dead transitions. [2021-03-26 08:09:52,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 449 transitions, 24125 flow [2021-03-26 08:09:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 08:09:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 08:09:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 939 transitions. [2021-03-26 08:09:52,423 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2980952380952381 [2021-03-26 08:09:52,423 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 939 transitions. [2021-03-26 08:09:52,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 939 transitions. [2021-03-26 08:09:52,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:52,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 939 transitions. [2021-03-26 08:09:52,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.33333333333333) internal successors, (939), 9 states have internal predecessors, (939), 0 states have call successors, (0), 0 states 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 08:09:52,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 350.0) internal successors, (3500), 10 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states 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 08:09:52,426 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 350.0) internal successors, (3500), 10 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states 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 08:09:52,426 INFO L185 Difference]: Start difference. First operand has 310 places, 431 transitions, 22143 flow. Second operand 9 states and 939 transitions. [2021-03-26 08:09:52,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 449 transitions, 24125 flow [2021-03-26 08:09:52,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 449 transitions, 24122 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 08:09:52,958 INFO L241 Difference]: Finished difference. Result has 320 places, 434 transitions, 22652 flow [2021-03-26 08:09:52,958 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=22096, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22652, PETRI_PLACES=320, PETRI_TRANSITIONS=434} [2021-03-26 08:09:52,958 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2021-03-26 08:09:52,958 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:52,959 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 320 places, 434 transitions, 22652 flow [2021-03-26 08:09:52,959 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 320 places, 434 transitions, 22652 flow [2021-03-26 08:09:52,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 320 places, 434 transitions, 22652 flow [2021-03-26 08:09:53,198 INFO L129 PetriNetUnfolder]: 357/1265 cut-off events. [2021-03-26 08:09:53,198 INFO L130 PetriNetUnfolder]: For 201849/203102 co-relation queries the response was YES. [2021-03-26 08:09:53,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22629 conditions, 1265 events. 357/1265 cut-off events. For 201849/203102 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11902 event pairs, 4 based on Foata normal form. 21/1166 useless extension candidates. Maximal degree in co-relation 22501. Up to 419 conditions per place. [2021-03-26 08:09:53,228 INFO L142 LiptonReduction]: Number of co-enabled transitions 2076 [2021-03-26 08:09:53,429 INFO L154 LiptonReduction]: Checked pairs total: 327 [2021-03-26 08:09:53,429 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 08:09:53,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 472 [2021-03-26 08:09:53,430 INFO L480 AbstractCegarLoop]: Abstraction has has 320 places, 434 transitions, 22669 flow [2021-03-26 08:09:53,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:53,430 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:53,430 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:53,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:53,631 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:53,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1893707432, now seen corresponding path program 1 times [2021-03-26 08:09:53,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:53,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119081227] [2021-03-26 08:09:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:53,644 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:53,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,649 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:53,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,656 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:53,656 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:53,670 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:09:53,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:53,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:53,687 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:53,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,696 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 08:09:53,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119081227] [2021-03-26 08:09:53,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023563271] [2021-03-26 08:09:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:53,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-26 08:09:53,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:53,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:53,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:53,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:53,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:53,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:53,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:53,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:53,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:53,785 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:53,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:53,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:53,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:53,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:53,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:53,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:53,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:53,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:53,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:53,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:53,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:53,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:53,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,818 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:53,818 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:53,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:53,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:53,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:53,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:53,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:53,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-26 08:09:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-26 08:09:53,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,837 INFO L147 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size 23 [2021-03-26 08:09:53,838 INFO L142 QuantifierPusher]: treesize reduction -2, result has 109.5 percent of original size [2021-03-26 08:09:53,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 08:09:53,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:53,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 08:09:53,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 08:09:53,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:53,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-26 08:09:53,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-26 08:09:53,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:53,866 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.3 percent of original size 40 [2021-03-26 08:09:53,867 INFO L142 QuantifierPusher]: treesize reduction -2, result has 105.3 percent of original size [2021-03-26 08:09:53,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-26 08:09:53,877 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 08:09:53,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-26 08:09:53,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-03-26 08:09:53,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299859358] [2021-03-26 08:09:53,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-26 08:09:53,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:09:53,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-26 08:09:53,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-03-26 08:09:53,879 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 353 [2021-03-26 08:09:53,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 434 transitions, 22669 flow. Second operand has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:53,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:09:53,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 353 [2021-03-26 08:09:53,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:09:55,313 INFO L129 PetriNetUnfolder]: 362/1292 cut-off events. [2021-03-26 08:09:55,313 INFO L130 PetriNetUnfolder]: For 205994/207602 co-relation queries the response was YES. [2021-03-26 08:09:55,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23801 conditions, 1292 events. 362/1292 cut-off events. For 205994/207602 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12127 event pairs, 3 based on Foata normal form. 66/1236 useless extension candidates. Maximal degree in co-relation 23671. Up to 489 conditions per place. [2021-03-26 08:09:55,336 INFO L132 encePairwiseOnDemand]: 242/353 looper letters, 234 selfloop transitions, 214 changer transitions 0/459 dead transitions. [2021-03-26 08:09:55,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 459 transitions, 25050 flow [2021-03-26 08:09:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-26 08:09:55,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-26 08:09:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1203 transitions. [2021-03-26 08:09:55,338 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2839943342776204 [2021-03-26 08:09:55,338 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1203 transitions. [2021-03-26 08:09:55,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1203 transitions. [2021-03-26 08:09:55,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:09:55,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1203 transitions. [2021-03-26 08:09:55,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 100.25) internal successors, (1203), 12 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states 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 08:09:55,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states 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 08:09:55,342 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states 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 08:09:55,342 INFO L185 Difference]: Start difference. First operand has 320 places, 434 transitions, 22669 flow. Second operand 12 states and 1203 transitions. [2021-03-26 08:09:55,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 459 transitions, 25050 flow [2021-03-26 08:09:55,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 459 transitions, 24878 flow, removed 43 selfloop flow, removed 4 redundant places. [2021-03-26 08:09:55,930 INFO L241 Difference]: Finished difference. Result has 331 places, 444 transitions, 23763 flow [2021-03-26 08:09:55,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=22498, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=23763, PETRI_PLACES=331, PETRI_TRANSITIONS=444} [2021-03-26 08:09:55,930 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2021-03-26 08:09:55,930 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:09:55,931 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 444 transitions, 23763 flow [2021-03-26 08:09:55,931 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 444 transitions, 23763 flow [2021-03-26 08:09:55,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 331 places, 444 transitions, 23763 flow [2021-03-26 08:09:56,186 INFO L129 PetriNetUnfolder]: 362/1296 cut-off events. [2021-03-26 08:09:56,186 INFO L130 PetriNetUnfolder]: For 212796/214415 co-relation queries the response was YES. [2021-03-26 08:09:56,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23461 conditions, 1296 events. 362/1296 cut-off events. For 212796/214415 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 12269 event pairs, 5 based on Foata normal form. 9/1175 useless extension candidates. Maximal degree in co-relation 23329. Up to 430 conditions per place. [2021-03-26 08:09:56,218 INFO L142 LiptonReduction]: Number of co-enabled transitions 2106 [2021-03-26 08:09:56,382 INFO L154 LiptonReduction]: Checked pairs total: 328 [2021-03-26 08:09:56,382 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:09:56,382 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 452 [2021-03-26 08:09:56,383 INFO L480 AbstractCegarLoop]: Abstraction has has 331 places, 444 transitions, 23763 flow [2021-03-26 08:09:56,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:09:56,383 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:09:56,383 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:09:56,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-03-26 08:09:56,604 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:09:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:09:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2145440877, now seen corresponding path program 1 times [2021-03-26 08:09:56,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:09:56,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130310482] [2021-03-26 08:09:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:09:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:56,616 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 08:09:56,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,624 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-26 08:09:56,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:56,631 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-26 08:09:56,631 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-03-26 08:09:56,648 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-03-26 08:09:56,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:56,657 INFO L142 QuantifierPusher]: treesize reduction 1, result has 93.3 percent of original size [2021-03-26 08:09:56,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:56,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 08:09:56,676 INFO L142 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-03-26 08:09:56,676 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-26 08:09:56,690 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 08:09:56,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130310482] [2021-03-26 08:09:56,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267863135] [2021-03-26 08:09:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-26 08:09:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:09:56,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-26 08:09:56,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-26 08:09:56,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:09:56,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:56,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:56,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:56,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:56,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:56,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:56,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:56,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-26 08:09:56,786 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-03-26 08:09:56,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:56,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-26 08:09:56,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:56,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:56,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:56,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 08:09:56,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:56,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:56,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 08:09:56,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-26 08:09:56,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,819 INFO L147 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size 18 [2021-03-26 08:09:56,820 INFO L142 QuantifierPusher]: treesize reduction -1, result has 105.9 percent of original size [2021-03-26 08:09:56,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 08:09:56,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:56,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:56,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 08:09:56,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:56,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:09:56,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-26 08:09:56,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 08:09:56,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 08:09:56,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-26 08:09:56,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-26 08:09:56,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,863 INFO L147 QuantifierPusher]: treesize reduction -1, result has 104.2 percent of original size 25 [2021-03-26 08:09:56,864 INFO L142 QuantifierPusher]: treesize reduction -1, result has 104.2 percent of original size [2021-03-26 08:09:56,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-26 08:09:56,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 08:09:56,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-26 08:09:56,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-26 08:09:56,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-26 08:09:56,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:56,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,906 INFO L142 QuantifierPusher]: treesize reduction -1, result has 102.6 percent of original size [2021-03-26 08:09:56,908 INFO L147 QuantifierPusher]: treesize reduction -2, result has 105.7 percent of original size 37 [2021-03-26 08:09:56,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:56,909 INFO L142 QuantifierPusher]: treesize reduction -2, result has 105.1 percent of original size [2021-03-26 08:09:56,962 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:56,968 INFO L147 QuantifierPusher]: treesize reduction 47, result has 88.0 percent of original size 344 [2021-03-26 08:09:57,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-26 08:09:57,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:09:57,434 INFO L842 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:57,887 INFO L842 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:58,627 INFO L842 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:09:59,619 INFO L842 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:10:00,885 INFO L842 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:10:02,394 INFO L842 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:10:03,480 INFO L842 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:10:20,798 INFO L842 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:10:52,387 INFO L842 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:11:32,297 INFO L842 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:12:21,912 INFO L842 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:13:20,701 INFO L842 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:14:28,239 INFO L842 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:15:45,878 INFO L842 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:17:12,338 INFO L842 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:18:48,442 INFO L842 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:20:34,321 INFO L842 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-03-26 08:22:29,570 INFO L842 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown