/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 23:26:07,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 23:26:07,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 23:26:07,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 23:26:07,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 23:26:07,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 23:26:07,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 23:26:07,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 23:26:07,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 23:26:07,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 23:26:07,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 23:26:07,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 23:26:07,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 23:26:07,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 23:26:07,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 23:26:07,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 23:26:07,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 23:26:07,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 23:26:07,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 23:26:07,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 23:26:07,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 23:26:07,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 23:26:07,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 23:26:07,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 23:26:07,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 23:26:07,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-28 23:26:07,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-28 23:26:07,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-28 23:26:07,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-28 23:26:07,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-28 23:26:07,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-28 23:26:07,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-28 23:26:07,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-28 23:26:07,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 23:26:07,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 23:26:07,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 23:26:07,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 23:26:07,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 23:26:07,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 23:26:07,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 23:26:07,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 23:26:07,948 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 23:26:07,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 23:26:07,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 23:26:07,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 23:26:07,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 23:26:07,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 23:26:07,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 23:26:07,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 23:26:07,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 23:26:07,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 23:26:07,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 23:26:07,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 23:26:07,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 23:26:07,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 23:26:07,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 23:26:07,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 23:26:07,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 23:26:07,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 23:26:07,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 23:26:07,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 23:26:07,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 23:26:07,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 23:26:07,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 23:26:07,954 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 23:26:07,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 23:26:07,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 23:26:07,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 23:26:08,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 23:26:08,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 23:26:08,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 23:26:08,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 23:26:08,462 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 23:26:08,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2021-04-28 23:26:08,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6dd23a81/7cab2ee69c7742c79c12d7004ec43c06/FLAG2f061332f [2021-04-28 23:26:09,426 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 23:26:09,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2021-04-28 23:26:09,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6dd23a81/7cab2ee69c7742c79c12d7004ec43c06/FLAG2f061332f [2021-04-28 23:26:09,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6dd23a81/7cab2ee69c7742c79c12d7004ec43c06 [2021-04-28 23:26:09,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 23:26:09,705 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 23:26:09,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 23:26:09,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 23:26:09,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 23:26:09,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:26:09" (1/1) ... [2021-04-28 23:26:09,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23507be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:09, skipping insertion in model container [2021-04-28 23:26:09,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:26:09" (1/1) ... [2021-04-28 23:26:09,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 23:26:09,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 23:26:09,959 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-wmm/safe002_tso.opt.i[949,962] [2021-04-28 23:26:10,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:26:10,249 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 23:26:10,268 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-wmm/safe002_tso.opt.i[949,962] [2021-04-28 23:26:10,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:26:10,422 INFO L208 MainTranslator]: Completed translation [2021-04-28 23:26:10,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10 WrapperNode [2021-04-28 23:26:10,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 23:26:10,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 23:26:10,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 23:26:10,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 23:26:10,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 23:26:10,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 23:26:10,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 23:26:10,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 23:26:10,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (1/1) ... [2021-04-28 23:26:10,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 23:26:10,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 23:26:10,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 23:26:10,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 23:26:10,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (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 [2021-04-28 23:26:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 23:26:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 23:26:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 23:26:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 23:26:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 23:26:10,624 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 23:26:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 23:26:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 23:26:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-28 23:26:10,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-28 23:26:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 23:26:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 23:26:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 23:26:10,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 23:26:10,628 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 23:26:11,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 23:26:11,075 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-28 23:26:11,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:26:11 BoogieIcfgContainer [2021-04-28 23:26:11,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 23:26:11,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 23:26:11,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 23:26:11,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 23:26:11,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:26:09" (1/3) ... [2021-04-28 23:26:11,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527e1fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:26:11, skipping insertion in model container [2021-04-28 23:26:11,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:26:10" (2/3) ... [2021-04-28 23:26:11,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527e1fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:26:11, skipping insertion in model container [2021-04-28 23:26:11,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:26:11" (3/3) ... [2021-04-28 23:26:11,095 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2021-04-28 23:26:11,104 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 23:26:11,112 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 23:26:11,115 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 23:26:11,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,174 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,174 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,179 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,179 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,179 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,182 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,185 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,185 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,185 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,186 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,187 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,187 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,206 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,217 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,218 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:26:11,222 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 23:26:11,254 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-28 23:26:11,305 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 23:26:11,305 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 23:26:11,305 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 23:26:11,305 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 23:26:11,306 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 23:26:11,306 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 23:26:11,306 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 23:26:11,306 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 23:26:11,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-04-28 23:26:11,424 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-04-28 23:26:11,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:11,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-04-28 23:26:11,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-04-28 23:26:11,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-04-28 23:26:11,444 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:11,468 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-28 23:26:11,472 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-28 23:26:11,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-04-28 23:26:11,494 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-04-28 23:26:11,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:11,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-04-28 23:26:11,498 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-28 23:26:15,181 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:26:15,352 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:26:15,523 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:26:15,695 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:26:15,881 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:26:16,080 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:26:16,296 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:26:16,511 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:26:16,708 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:26:16,895 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:26:17,364 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:26:17,548 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:26:18,559 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-28 23:26:18,867 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-28 23:26:19,215 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-28 23:26:19,326 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 23:26:19,570 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-28 23:26:19,689 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 23:26:20,297 INFO L158 LiptonReduction]: Checked pairs total: 5648 [2021-04-28 23:26:20,297 INFO L160 LiptonReduction]: Total number of compositions: 84 [2021-04-28 23:26:20,301 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8861 [2021-04-28 23:26:20,323 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-04-28 23:26:20,323 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:20,324 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:20,325 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:20,325 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:20,332 INFO L82 PathProgramCache]: Analyzing trace with hash 351986949, now seen corresponding path program 1 times [2021-04-28 23:26:20,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:20,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718227458] [2021-04-28 23:26:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:20,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:20,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:20,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718227458] [2021-04-28 23:26:20,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:20,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:26:20,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636390823] [2021-04-28 23:26:20,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:26:20,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:20,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:26:20,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:26:20,708 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 159 [2021-04-28 23:26:20,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:20,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:20,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 159 [2021-04-28 23:26:20,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:20,803 INFO L129 PetriNetUnfolder]: 4/73 cut-off events. [2021-04-28 23:26:20,803 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:20,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 73 events. 4/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 337 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 71. Up to 15 conditions per place. [2021-04-28 23:26:20,805 INFO L132 encePairwiseOnDemand]: 145/159 looper letters, 1 selfloop transitions, 2 changer transitions 44/69 dead transitions. [2021-04-28 23:26:20,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 191 flow [2021-04-28 23:26:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:26:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:26:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2021-04-28 23:26:20,826 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8176100628930818 [2021-04-28 23:26:20,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2021-04-28 23:26:20,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2021-04-28 23:26:20,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:20,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2021-04-28 23:26:20,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:20,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:20,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:20,853 INFO L185 Difference]: Start difference. First operand has 75 places, 65 transitions, 139 flow. Second operand 3 states and 390 transitions. [2021-04-28 23:26:20,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 191 flow [2021-04-28 23:26:20,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-28 23:26:20,862 INFO L241 Difference]: Finished difference. Result has 75 places, 25 transitions, 64 flow [2021-04-28 23:26:20,864 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=75, PETRI_TRANSITIONS=25} [2021-04-28 23:26:20,866 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2021-04-28 23:26:20,866 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:20,866 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 25 transitions, 64 flow [2021-04-28 23:26:20,867 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 25 transitions, 64 flow [2021-04-28 23:26:20,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 64 flow [2021-04-28 23:26:20,872 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-04-28 23:26:20,872 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:20,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 0/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 51 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-28 23:26:20,873 INFO L146 LiptonReduction]: Number of co-enabled transitions 322 [2021-04-28 23:26:21,040 INFO L158 LiptonReduction]: Checked pairs total: 349 [2021-04-28 23:26:21,041 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:21,041 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 175 [2021-04-28 23:26:21,043 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 64 flow [2021-04-28 23:26:21,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,044 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:21,045 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:21,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 23:26:21,045 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:21,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1973307743, now seen corresponding path program 1 times [2021-04-28 23:26:21,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:21,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573424857] [2021-04-28 23:26:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:21,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:21,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:21,193 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:21,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:21,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573424857] [2021-04-28 23:26:21,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:21,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:26:21,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055294609] [2021-04-28 23:26:21,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:21,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:21,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:21,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:21,211 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2021-04-28 23:26:21,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:21,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2021-04-28 23:26:21,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:21,257 INFO L129 PetriNetUnfolder]: 31/131 cut-off events. [2021-04-28 23:26:21,257 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2021-04-28 23:26:21,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 131 events. 31/131 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 638 event pairs, 2 based on Foata normal form. 8/97 useless extension candidates. Maximal degree in co-relation 222. Up to 43 conditions per place. [2021-04-28 23:26:21,260 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 8 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2021-04-28 23:26:21,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 112 flow [2021-04-28 23:26:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:26:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:26:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2021-04-28 23:26:21,264 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2021-04-28 23:26:21,264 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 444 transitions. [2021-04-28 23:26:21,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 444 transitions. [2021-04-28 23:26:21,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:21,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 444 transitions. [2021-04-28 23:26:21,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,275 INFO L185 Difference]: Start difference. First operand has 35 places, 25 transitions, 64 flow. Second operand 4 states and 444 transitions. [2021-04-28 23:26:21,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 112 flow [2021-04-28 23:26:21,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:26:21,277 INFO L241 Difference]: Finished difference. Result has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:21,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2021-04-28 23:26:21,278 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -36 predicate places. [2021-04-28 23:26:21,278 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:21,278 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:21,279 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:21,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:21,295 INFO L129 PetriNetUnfolder]: 27/121 cut-off events. [2021-04-28 23:26:21,295 INFO L130 PetriNetUnfolder]: For 30/31 co-relation queries the response was YES. [2021-04-28 23:26:21,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 121 events. 27/121 cut-off events. For 30/31 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 611 event pairs, 8 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 236. Up to 48 conditions per place. [2021-04-28 23:26:21,299 INFO L146 LiptonReduction]: Number of co-enabled transitions 364 [2021-04-28 23:26:21,306 INFO L158 LiptonReduction]: Checked pairs total: 57 [2021-04-28 23:26:21,307 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:21,307 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-04-28 23:26:21,308 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:21,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,309 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:21,309 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:21,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 23:26:21,310 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:21,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:21,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1043891870, now seen corresponding path program 1 times [2021-04-28 23:26:21,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:21,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149180727] [2021-04-28 23:26:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:21,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:21,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:21,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:21,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:21,418 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:21,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:21,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149180727] [2021-04-28 23:26:21,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:21,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:21,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014269798] [2021-04-28 23:26:21,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:26:21,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:21,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:26:21,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:26:21,436 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2021-04-28 23:26:21,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:21,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2021-04-28 23:26:21,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:21,491 INFO L129 PetriNetUnfolder]: 25/137 cut-off events. [2021-04-28 23:26:21,491 INFO L130 PetriNetUnfolder]: For 69/83 co-relation queries the response was YES. [2021-04-28 23:26:21,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 137 events. 25/137 cut-off events. For 69/83 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 793 event pairs, 0 based on Foata normal form. 10/98 useless extension candidates. Maximal degree in co-relation 306. Up to 45 conditions per place. [2021-04-28 23:26:21,493 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 8 selfloop transitions, 6 changer transitions 12/43 dead transitions. [2021-04-28 23:26:21,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 231 flow [2021-04-28 23:26:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:26:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:26:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2021-04-28 23:26:21,496 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2021-04-28 23:26:21,496 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2021-04-28 23:26:21,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2021-04-28 23:26:21,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:21,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2021-04-28 23:26:21,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,504 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,504 INFO L185 Difference]: Start difference. First operand has 39 places, 29 transitions, 105 flow. Second operand 5 states and 555 transitions. [2021-04-28 23:26:21,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 231 flow [2021-04-28 23:26:21,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:26:21,507 INFO L241 Difference]: Finished difference. Result has 44 places, 27 transitions, 117 flow [2021-04-28 23:26:21,508 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2021-04-28 23:26:21,508 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -31 predicate places. [2021-04-28 23:26:21,508 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:21,508 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 27 transitions, 117 flow [2021-04-28 23:26:21,509 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 27 transitions, 117 flow [2021-04-28 23:26:21,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 27 transitions, 117 flow [2021-04-28 23:26:21,517 INFO L129 PetriNetUnfolder]: 9/51 cut-off events. [2021-04-28 23:26:21,517 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-04-28 23:26:21,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 51 events. 9/51 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 162 event pairs, 5 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 121. Up to 21 conditions per place. [2021-04-28 23:26:21,519 INFO L146 LiptonReduction]: Number of co-enabled transitions 282 [2021-04-28 23:26:21,528 INFO L158 LiptonReduction]: Checked pairs total: 37 [2021-04-28 23:26:21,529 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:21,529 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-04-28 23:26:21,530 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 117 flow [2021-04-28 23:26:21,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,531 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:21,532 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:21,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 23:26:21,532 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:21,533 INFO L82 PathProgramCache]: Analyzing trace with hash -411695581, now seen corresponding path program 1 times [2021-04-28 23:26:21,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:21,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096397717] [2021-04-28 23:26:21,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:21,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:21,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:26:21,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:21,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:21,658 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:21,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:21,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096397717] [2021-04-28 23:26:21,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:21,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:21,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899555918] [2021-04-28 23:26:21,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:21,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:21,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:21,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:21,693 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2021-04-28 23:26:21,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:21,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2021-04-28 23:26:21,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:21,737 INFO L129 PetriNetUnfolder]: 8/56 cut-off events. [2021-04-28 23:26:21,737 INFO L130 PetriNetUnfolder]: For 66/71 co-relation queries the response was YES. [2021-04-28 23:26:21,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 56 events. 8/56 cut-off events. For 66/71 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 203 event pairs, 2 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 143. Up to 18 conditions per place. [2021-04-28 23:26:21,739 INFO L132 encePairwiseOnDemand]: 154/159 looper letters, 8 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2021-04-28 23:26:21,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 167 flow [2021-04-28 23:26:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:26:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:26:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2021-04-28 23:26:21,742 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2021-04-28 23:26:21,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2021-04-28 23:26:21,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2021-04-28 23:26:21,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:21,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2021-04-28 23:26:21,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,749 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,750 INFO L185 Difference]: Start difference. First operand has 43 places, 27 transitions, 117 flow. Second operand 4 states and 440 transitions. [2021-04-28 23:26:21,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 167 flow [2021-04-28 23:26:21,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 137 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-04-28 23:26:21,756 INFO L241 Difference]: Finished difference. Result has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:21,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2021-04-28 23:26:21,756 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -33 predicate places. [2021-04-28 23:26:21,756 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:21,757 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:21,757 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:21,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:21,765 INFO L129 PetriNetUnfolder]: 7/51 cut-off events. [2021-04-28 23:26:21,766 INFO L130 PetriNetUnfolder]: For 26/28 co-relation queries the response was YES. [2021-04-28 23:26:21,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 51 events. 7/51 cut-off events. For 26/28 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 168 event pairs, 2 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 108. Up to 17 conditions per place. [2021-04-28 23:26:21,768 INFO L146 LiptonReduction]: Number of co-enabled transitions 296 [2021-04-28 23:26:21,772 INFO L158 LiptonReduction]: Checked pairs total: 39 [2021-04-28 23:26:21,772 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:21,774 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-04-28 23:26:21,783 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:21,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,784 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:21,784 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:21,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 23:26:21,784 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:21,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1485101801, now seen corresponding path program 1 times [2021-04-28 23:26:21,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:21,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907421292] [2021-04-28 23:26:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:21,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:21,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:21,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:21,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:21,900 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:21,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:21,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907421292] [2021-04-28 23:26:21,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:21,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:21,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495873623] [2021-04-28 23:26:21,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:26:21,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:21,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:26:21,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:26:21,923 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2021-04-28 23:26:21,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:21,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2021-04-28 23:26:21,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:21,985 INFO L129 PetriNetUnfolder]: 9/73 cut-off events. [2021-04-28 23:26:21,985 INFO L130 PetriNetUnfolder]: For 56/64 co-relation queries the response was YES. [2021-04-28 23:26:21,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 73 events. 9/73 cut-off events. For 56/64 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 317 event pairs, 1 based on Foata normal form. 3/53 useless extension candidates. Maximal degree in co-relation 181. Up to 24 conditions per place. [2021-04-28 23:26:21,987 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 5 selfloop transitions, 7 changer transitions 7/35 dead transitions. [2021-04-28 23:26:21,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 191 flow [2021-04-28 23:26:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:26:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:26:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2021-04-28 23:26:21,990 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2021-04-28 23:26:21,990 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2021-04-28 23:26:21,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2021-04-28 23:26:21,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:21,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2021-04-28 23:26:21,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:21,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,000 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,001 INFO L185 Difference]: Start difference. First operand has 42 places, 29 transitions, 123 flow. Second operand 5 states and 550 transitions. [2021-04-28 23:26:22,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 191 flow [2021-04-28 23:26:22,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 178 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-04-28 23:26:22,008 INFO L241 Difference]: Finished difference. Result has 47 places, 28 transitions, 143 flow [2021-04-28 23:26:22,008 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2021-04-28 23:26:22,009 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -28 predicate places. [2021-04-28 23:26:22,009 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:22,009 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 28 transitions, 143 flow [2021-04-28 23:26:22,009 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 28 transitions, 143 flow [2021-04-28 23:26:22,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 28 transitions, 143 flow [2021-04-28 23:26:22,016 INFO L129 PetriNetUnfolder]: 6/42 cut-off events. [2021-04-28 23:26:22,016 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-04-28 23:26:22,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 42 events. 6/42 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 115 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 16 conditions per place. [2021-04-28 23:26:22,021 INFO L146 LiptonReduction]: Number of co-enabled transitions 236 [2021-04-28 23:26:22,060 INFO L158 LiptonReduction]: Checked pairs total: 43 [2021-04-28 23:26:22,061 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 23:26:22,061 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-04-28 23:26:22,069 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 143 flow [2021-04-28 23:26:22,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,070 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:22,070 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:22,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 23:26:22,071 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:22,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:22,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1074566651, now seen corresponding path program 2 times [2021-04-28 23:26:22,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:22,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216020110] [2021-04-28 23:26:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:22,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:22,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:22,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:22,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 23:26:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:22,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216020110] [2021-04-28 23:26:22,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:22,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:26:22,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369442910] [2021-04-28 23:26:22,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:22,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:22,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:22,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:22,162 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2021-04-28 23:26:22,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:22,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2021-04-28 23:26:22,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:22,347 INFO L129 PetriNetUnfolder]: 533/891 cut-off events. [2021-04-28 23:26:22,348 INFO L130 PetriNetUnfolder]: For 2012/2128 co-relation queries the response was YES. [2021-04-28 23:26:22,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 891 events. 533/891 cut-off events. For 2012/2128 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 5192 event pairs, 258 based on Foata normal form. 69/462 useless extension candidates. Maximal degree in co-relation 2205. Up to 667 conditions per place. [2021-04-28 23:26:22,359 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 17 selfloop transitions, 17 changer transitions 7/56 dead transitions. [2021-04-28 23:26:22,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 279 flow [2021-04-28 23:26:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:26:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:26:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2021-04-28 23:26:22,364 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.70875 [2021-04-28 23:26:22,364 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2021-04-28 23:26:22,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2021-04-28 23:26:22,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:22,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2021-04-28 23:26:22,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,369 INFO L185 Difference]: Start difference. First operand has 46 places, 28 transitions, 143 flow. Second operand 5 states and 567 transitions. [2021-04-28 23:26:22,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 279 flow [2021-04-28 23:26:22,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 259 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-04-28 23:26:22,374 INFO L241 Difference]: Finished difference. Result has 47 places, 43 transitions, 253 flow [2021-04-28 23:26:22,374 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2021-04-28 23:26:22,375 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -28 predicate places. [2021-04-28 23:26:22,375 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:22,375 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 43 transitions, 253 flow [2021-04-28 23:26:22,376 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 43 transitions, 253 flow [2021-04-28 23:26:22,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 253 flow [2021-04-28 23:26:22,482 INFO L129 PetriNetUnfolder]: 542/926 cut-off events. [2021-04-28 23:26:22,483 INFO L130 PetriNetUnfolder]: For 1378/1480 co-relation queries the response was YES. [2021-04-28 23:26:22,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 926 events. 542/926 cut-off events. For 1378/1480 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 5668 event pairs, 252 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 2977. Up to 803 conditions per place. [2021-04-28 23:26:22,499 INFO L146 LiptonReduction]: Number of co-enabled transitions 314 [2021-04-28 23:26:22,506 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:22,507 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:22,507 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 132 [2021-04-28 23:26:22,508 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 253 flow [2021-04-28 23:26:22,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,509 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:22,509 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:22,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 23:26:22,510 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:22,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1777132126, now seen corresponding path program 1 times [2021-04-28 23:26:22,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:22,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745629253] [2021-04-28 23:26:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:22,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:22,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:22,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:22,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:22,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:22,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 23:26:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:22,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745629253] [2021-04-28 23:26:22,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:22,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:22,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306242353] [2021-04-28 23:26:22,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:26:22,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:22,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:26:22,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:26:22,583 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2021-04-28 23:26:22,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:22,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2021-04-28 23:26:22,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:22,866 INFO L129 PetriNetUnfolder]: 455/866 cut-off events. [2021-04-28 23:26:22,866 INFO L130 PetriNetUnfolder]: For 2369/3535 co-relation queries the response was YES. [2021-04-28 23:26:22,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 866 events. 455/866 cut-off events. For 2369/3535 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 5783 event pairs, 63 based on Foata normal form. 96/464 useless extension candidates. Maximal degree in co-relation 3590. Up to 761 conditions per place. [2021-04-28 23:26:22,878 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 11 selfloop transitions, 33 changer transitions 12/71 dead transitions. [2021-04-28 23:26:22,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 531 flow [2021-04-28 23:26:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-28 23:26:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-28 23:26:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 793 transitions. [2021-04-28 23:26:22,883 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7080357142857143 [2021-04-28 23:26:22,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 793 transitions. [2021-04-28 23:26:22,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 793 transitions. [2021-04-28 23:26:22,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:22,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 793 transitions. [2021-04-28 23:26:22,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,891 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:22,892 INFO L185 Difference]: Start difference. First operand has 46 places, 43 transitions, 253 flow. Second operand 7 states and 793 transitions. [2021-04-28 23:26:22,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 531 flow [2021-04-28 23:26:22,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:26:22,909 INFO L241 Difference]: Finished difference. Result has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:22,909 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2021-04-28 23:26:22,910 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2021-04-28 23:26:22,910 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:22,910 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:22,911 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:22,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:23,056 INFO L129 PetriNetUnfolder]: 320/734 cut-off events. [2021-04-28 23:26:23,056 INFO L130 PetriNetUnfolder]: For 2455/3319 co-relation queries the response was YES. [2021-04-28 23:26:23,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 734 events. 320/734 cut-off events. For 2455/3319 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 5594 event pairs, 64 based on Foata normal form. 4/352 useless extension candidates. Maximal degree in co-relation 3464. Up to 632 conditions per place. [2021-04-28 23:26:23,073 INFO L146 LiptonReduction]: Number of co-enabled transitions 372 [2021-04-28 23:26:23,089 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:23,089 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:23,089 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 179 [2021-04-28 23:26:23,093 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:23,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:23,094 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:23,094 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:23,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-28 23:26:23,094 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:23,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:23,095 INFO L82 PathProgramCache]: Analyzing trace with hash 742973143, now seen corresponding path program 1 times [2021-04-28 23:26:23,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:23,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169868960] [2021-04-28 23:26:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:23,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:23,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:23,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:23,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:23,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:23,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:23,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:23,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 23:26:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:23,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169868960] [2021-04-28 23:26:23,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:23,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 23:26:23,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745002604] [2021-04-28 23:26:23,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 23:26:23,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:23,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 23:26:23,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-28 23:26:23,199 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2021-04-28 23:26:23,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:23,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:23,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2021-04-28 23:26:23,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:23,557 INFO L129 PetriNetUnfolder]: 212/596 cut-off events. [2021-04-28 23:26:23,557 INFO L130 PetriNetUnfolder]: For 3031/4856 co-relation queries the response was YES. [2021-04-28 23:26:23,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 596 events. 212/596 cut-off events. For 3031/4856 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 4817 event pairs, 0 based on Foata normal form. 111/370 useless extension candidates. Maximal degree in co-relation 3309. Up to 536 conditions per place. [2021-04-28 23:26:23,567 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 2 selfloop transitions, 43 changer transitions 9/69 dead transitions. [2021-04-28 23:26:23,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 663 flow [2021-04-28 23:26:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-28 23:26:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-28 23:26:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1001 transitions. [2021-04-28 23:26:23,573 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6951388888888889 [2021-04-28 23:26:23,573 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1001 transitions. [2021-04-28 23:26:23,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1001 transitions. [2021-04-28 23:26:23,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:23,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1001 transitions. [2021-04-28 23:26:23,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.22222222222223) internal successors, (1001), 9 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:23,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:23,585 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:23,585 INFO L185 Difference]: Start difference. First operand has 54 places, 59 transitions, 471 flow. Second operand 9 states and 1001 transitions. [2021-04-28 23:26:23,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 663 flow [2021-04-28 23:26:23,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 583 flow, removed 31 selfloop flow, removed 2 redundant places. [2021-04-28 23:26:23,611 INFO L241 Difference]: Finished difference. Result has 63 places, 60 transitions, 515 flow [2021-04-28 23:26:23,611 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=515, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2021-04-28 23:26:23,612 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -12 predicate places. [2021-04-28 23:26:23,612 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:23,612 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 60 transitions, 515 flow [2021-04-28 23:26:23,612 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 60 transitions, 515 flow [2021-04-28 23:26:23,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 515 flow [2021-04-28 23:26:23,682 INFO L129 PetriNetUnfolder]: 149/473 cut-off events. [2021-04-28 23:26:23,683 INFO L130 PetriNetUnfolder]: For 1911/2236 co-relation queries the response was YES. [2021-04-28 23:26:23,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 473 events. 149/473 cut-off events. For 1911/2236 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 3815 event pairs, 1 based on Foata normal form. 3/234 useless extension candidates. Maximal degree in co-relation 2312. Up to 235 conditions per place. [2021-04-28 23:26:23,693 INFO L146 LiptonReduction]: Number of co-enabled transitions 372 [2021-04-28 23:26:23,708 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:23,708 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:23,709 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-04-28 23:26:23,715 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 515 flow [2021-04-28 23:26:23,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:23,716 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:23,716 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:23,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-28 23:26:23,716 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash -319416866, now seen corresponding path program 1 times [2021-04-28 23:26:23,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:23,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842411321] [2021-04-28 23:26:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:23,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:23,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:26:23,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:23,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:23,793 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:23,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:23,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842411321] [2021-04-28 23:26:23,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:23,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:23,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942070799] [2021-04-28 23:26:23,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:23,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:23,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:23,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:23,809 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 160 [2021-04-28 23:26:23,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:23,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:23,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 160 [2021-04-28 23:26:23,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:23,978 INFO L129 PetriNetUnfolder]: 238/689 cut-off events. [2021-04-28 23:26:23,978 INFO L130 PetriNetUnfolder]: For 4095/4582 co-relation queries the response was YES. [2021-04-28 23:26:23,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3455 conditions, 689 events. 238/689 cut-off events. For 4095/4582 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 5744 event pairs, 0 based on Foata normal form. 35/361 useless extension candidates. Maximal degree in co-relation 3429. Up to 346 conditions per place. [2021-04-28 23:26:23,987 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 4 selfloop transitions, 8 changer transitions 3/63 dead transitions. [2021-04-28 23:26:23,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 567 flow [2021-04-28 23:26:23,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:26:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:26:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2021-04-28 23:26:23,992 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.665 [2021-04-28 23:26:23,993 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2021-04-28 23:26:23,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2021-04-28 23:26:23,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:23,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2021-04-28 23:26:23,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,003 INFO L185 Difference]: Start difference. First operand has 62 places, 60 transitions, 515 flow. Second operand 5 states and 532 transitions. [2021-04-28 23:26:24,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 567 flow [2021-04-28 23:26:24,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 423 flow, removed 34 selfloop flow, removed 8 redundant places. [2021-04-28 23:26:24,077 INFO L241 Difference]: Finished difference. Result has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:24,077 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2021-04-28 23:26:24,077 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -15 predicate places. [2021-04-28 23:26:24,078 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:24,078 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:24,078 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:24,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:24,159 INFO L129 PetriNetUnfolder]: 227/644 cut-off events. [2021-04-28 23:26:24,159 INFO L130 PetriNetUnfolder]: For 1455/1507 co-relation queries the response was YES. [2021-04-28 23:26:24,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 644 events. 227/644 cut-off events. For 1455/1507 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 5368 event pairs, 0 based on Foata normal form. 4/315 useless extension candidates. Maximal degree in co-relation 2188. Up to 280 conditions per place. [2021-04-28 23:26:24,169 INFO L146 LiptonReduction]: Number of co-enabled transitions 346 [2021-04-28 23:26:24,189 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:24,189 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:24,189 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 111 [2021-04-28 23:26:24,190 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:24,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,191 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:24,191 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:24,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-28 23:26:24,192 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:24,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:24,192 INFO L82 PathProgramCache]: Analyzing trace with hash -716513181, now seen corresponding path program 1 times [2021-04-28 23:26:24,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:24,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765019335] [2021-04-28 23:26:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:24,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:24,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:26:24,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:24,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:24,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:24,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:24,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765019335] [2021-04-28 23:26:24,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:24,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:24,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227219177] [2021-04-28 23:26:24,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:24,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:24,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:24,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:24,273 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 160 [2021-04-28 23:26:24,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:24,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 160 [2021-04-28 23:26:24,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:24,373 INFO L129 PetriNetUnfolder]: 227/617 cut-off events. [2021-04-28 23:26:24,374 INFO L130 PetriNetUnfolder]: For 1871/1968 co-relation queries the response was YES. [2021-04-28 23:26:24,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 617 events. 227/617 cut-off events. For 1871/1968 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 4925 event pairs, 0 based on Foata normal form. 31/307 useless extension candidates. Maximal degree in co-relation 1923. Up to 280 conditions per place. [2021-04-28 23:26:24,379 INFO L132 encePairwiseOnDemand]: 157/160 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2021-04-28 23:26:24,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 395 flow [2021-04-28 23:26:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:26:24,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:26:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2021-04-28 23:26:24,382 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7375 [2021-04-28 23:26:24,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 472 transitions. [2021-04-28 23:26:24,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 472 transitions. [2021-04-28 23:26:24,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:24,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 472 transitions. [2021-04-28 23:26:24,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,389 INFO L185 Difference]: Start difference. First operand has 60 places, 60 transitions, 407 flow. Second operand 4 states and 472 transitions. [2021-04-28 23:26:24,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 395 flow [2021-04-28 23:26:24,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 336 flow, removed 1 selfloop flow, removed 11 redundant places. [2021-04-28 23:26:24,414 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-04-28 23:26:24,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-04-28 23:26:24,415 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -24 predicate places. [2021-04-28 23:26:24,416 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:24,416 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 0 transitions, 0 flow [2021-04-28 23:26:24,416 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 0 transitions, 0 flow [2021-04-28 23:26:24,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 23:26:24,417 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 23:26:24,417 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:24,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-28 23:26:24,417 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 23:26:24,417 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:24,418 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:24,418 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-28 23:26:24,421 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 23:26:24,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:24,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-28 23:26:24,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 11:26:24 BasicIcfg [2021-04-28 23:26:24,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 23:26:24,433 INFO L168 Benchmark]: Toolchain (without parser) took 14779.32 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 275.3 MB in the beginning and 231.6 MB in the end (delta: 43.7 MB). Peak memory consumption was 179.6 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:24,434 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:26:24,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.20 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 274.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:24,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.45 ms. Allocated memory is still 302.0 MB. Free memory was 274.4 MB in the beginning and 272.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:24,435 INFO L168 Benchmark]: Boogie Preprocessor took 29.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 271.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:26:24,436 INFO L168 Benchmark]: RCFGBuilder took 571.80 ms. Allocated memory is still 302.0 MB. Free memory was 271.5 MB in the beginning and 247.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:24,437 INFO L168 Benchmark]: TraceAbstraction took 13346.62 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 246.3 MB in the beginning and 231.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 148.9 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:24,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 716.20 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 274.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.45 ms. Allocated memory is still 302.0 MB. Free memory was 274.4 MB in the beginning and 272.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 271.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 571.80 ms. Allocated memory is still 302.0 MB. Free memory was 271.5 MB in the beginning and 247.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 13346.62 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 246.3 MB in the beginning and 231.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 148.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8825.2ms, 69 PlacesBefore, 75 PlacesAfterwards, 60 TransitionsBefore, 65 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 84 TotalNumberOfCompositions, 5648 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1624, positive: 1458, positive conditional: 1458, positive unconditional: 0, negative: 166, negative conditional: 166, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 857, positive: 807, positive conditional: 0, positive unconditional: 807, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 857, positive: 807, positive conditional: 0, positive unconditional: 807, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 857, positive: 795, positive conditional: 0, positive unconditional: 795, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 333, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 263, negative conditional: 0, negative unconditional: 263, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1624, positive: 651, positive conditional: 651, positive unconditional: 0, negative: 116, negative conditional: 116, negative unconditional: 0, unknown: 857, unknown conditional: 857, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 836, Positive cache size: 786, Positive conditional cache size: 786, Positive unconditional cache size: 0, Negative cache size: 50, Negative conditional cache size: 50, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 173.8ms, 75 PlacesBefore, 35 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 322 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 349 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 175, positive: 152, positive conditional: 152, positive unconditional: 0, negative: 23, negative conditional: 23, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 91, positive: 83, positive conditional: 1, positive unconditional: 82, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 91, positive: 83, positive conditional: 1, positive unconditional: 82, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 91, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 156, positive: 116, positive conditional: 0, positive unconditional: 116, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 175, positive: 69, positive conditional: 69, positive unconditional: 0, negative: 15, negative conditional: 15, negative unconditional: 0, unknown: 91, unknown conditional: 91, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 927, Positive cache size: 869, Positive conditional cache size: 869, Positive unconditional cache size: 0, Negative cache size: 58, Negative conditional cache size: 58, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.9ms, 39 PlacesBefore, 39 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 364 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 57 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 929, Positive cache size: 870, Positive conditional cache size: 870, Positive unconditional cache size: 0, Negative cache size: 59, Negative conditional cache size: 59, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.9ms, 44 PlacesBefore, 43 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 938, Positive cache size: 878, Positive conditional cache size: 878, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.5ms, 42 PlacesBefore, 42 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 296 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 39 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 939, Positive cache size: 879, Positive conditional cache size: 879, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 51.3ms, 47 PlacesBefore, 46 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 236 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 43 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 131.2ms, 47 PlacesBefore, 46 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 314 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 178.5ms, 54 PlacesBefore, 54 PlacesAfterwards, 59 TransitionsBefore, 59 TransitionsAfterwards, 372 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 96.0ms, 63 PlacesBefore, 62 PlacesAfterwards, 60 TransitionsBefore, 60 TransitionsAfterwards, 372 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 110.7ms, 60 PlacesBefore, 60 PlacesAfterwards, 60 TransitionsBefore, 60 TransitionsAfterwards, 346 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3ms, 51 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 13126.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1838.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9004.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56 SDtfs, 54 SDslu, 20 SDs, 0 SdLazy, 297 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 373.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 226.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=515occurred in iteration=8, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.8ms SsaConstructionTime, 317.7ms SatisfiabilityAnalysisTime, 791.1ms InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...