/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 06:59:52,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 06:59:52,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 06:59:52,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 06:59:52,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 06:59:52,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 06:59:52,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 06:59:52,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 06:59:52,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 06:59:52,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 06:59:52,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 06:59:52,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 06:59:52,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 06:59:52,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 06:59:52,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 06:59:52,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 06:59:52,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 06:59:52,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 06:59:52,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 06:59:52,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 06:59:52,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 06:59:52,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 06:59:52,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 06:59:52,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 06:59:52,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 06:59:52,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 06:59:52,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 06:59:52,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 06:59:52,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 06:59:52,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 06:59:52,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 06:59:52,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 06:59:52,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 06:59:52,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 06:59:52,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 06:59:52,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 06:59:52,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 06:59:52,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 06:59:52,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 06:59:52,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 06:59:52,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 06:59:52,107 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-RepeatedSemanticLbe.epf [2021-06-11 06:59:52,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 06:59:52,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 06:59:52,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 06:59:52,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 06:59:52,131 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 06:59:52,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 06:59:52,131 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 06:59:52,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 06:59:52,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 06:59:52,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 06:59:52,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 06:59:52,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 06:59:52,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 06:59:52,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 06:59:52,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 06:59:52,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 06:59:52,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 06:59:52,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 06:59:52,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 06:59:52,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 06:59:52,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 06:59:52,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 06:59:52,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 06:59:52,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 06:59:52,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 06:59:52,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-11 06:59:52,381 INFO L275 PluginConnector]: CDTParser initialized [2021-06-11 06:59:52,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-06-11 06:59:52,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cdfa6a9/c1a296c3f43845bdb5cc80e1e782850a/FLAGeb8bc3b5e [2021-06-11 06:59:52,813 INFO L306 CDTParser]: Found 1 translation units. [2021-06-11 06:59:52,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-06-11 06:59:52,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cdfa6a9/c1a296c3f43845bdb5cc80e1e782850a/FLAGeb8bc3b5e [2021-06-11 06:59:53,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cdfa6a9/c1a296c3f43845bdb5cc80e1e782850a [2021-06-11 06:59:53,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 06:59:53,192 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-11 06:59:53,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-11 06:59:53,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-11 06:59:53,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-11 06:59:53,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f182b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53, skipping insertion in model container [2021-06-11 06:59:53,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-11 06:59:53,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-11 06:59:53,330 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/safe031_tso.oepc.i[950,963] [2021-06-11 06:59:53,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 06:59:53,446 INFO L203 MainTranslator]: Completed pre-run [2021-06-11 06:59:53,456 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/safe031_tso.oepc.i[950,963] [2021-06-11 06:59:53,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 06:59:53,528 INFO L208 MainTranslator]: Completed translation [2021-06-11 06:59:53,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53 WrapperNode [2021-06-11 06:59:53,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-11 06:59:53,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 06:59:53,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 06:59:53,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 06:59:53,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 06:59:53,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 06:59:53,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 06:59:53,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 06:59:53,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (1/1) ... [2021-06-11 06:59:53,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 06:59:53,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 06:59:53,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 06:59:53,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 06:59:53,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (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 [2021-06-11 06:59:53,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-11 06:59:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-11 06:59:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-11 06:59:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-11 06:59:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-11 06:59:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-11 06:59:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-11 06:59:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-11 06:59:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-11 06:59:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-11 06:59:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-11 06:59:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-11 06:59:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 06:59:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 06:59:53,635 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 06:59:53,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 06:59:53,968 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-11 06:59:53,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:59:53 BoogieIcfgContainer [2021-06-11 06:59:53,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 06:59:53,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 06:59:53,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 06:59:53,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 06:59:53,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.06 06:59:53" (1/3) ... [2021-06-11 06:59:53,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7519191d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:59:53, skipping insertion in model container [2021-06-11 06:59:53,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:59:53" (2/3) ... [2021-06-11 06:59:53,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7519191d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:59:53, skipping insertion in model container [2021-06-11 06:59:53,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:59:53" (3/3) ... [2021-06-11 06:59:53,976 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2021-06-11 06:59:53,980 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 06:59:53,983 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 06:59:53,983 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 06:59:54,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,014 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,014 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,016 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,016 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,017 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,017 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,018 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,018 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,018 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,019 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,019 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,026 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,027 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,033 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,033 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,033 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,033 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:59:54,035 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 06:59:54,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-11 06:59:54,072 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 06:59:54,072 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 06:59:54,072 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 06:59:54,072 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 06:59:54,072 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 06:59:54,072 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 06:59:54,072 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 06:59:54,073 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 06:59:54,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-06-11 06:59:54,115 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-06-11 06:59:54,115 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:59:54,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 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. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-11 06:59:54,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-06-11 06:59:54,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-06-11 06:59:54,129 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:54,136 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-06-11 06:59:54,139 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-06-11 06:59:54,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-06-11 06:59:54,149 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-06-11 06:59:54,149 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:59:54,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-06-11 06:59:54,150 INFO L151 LiptonReduction]: Number of co-enabled transitions 864 [2021-06-11 06:59:54,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:54,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:54,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:54,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:59:54,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:54,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:54,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:59:54,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:54,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:54,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:54,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:54,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:54,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:54,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:54,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:59:54,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:54,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:54,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:54,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:54,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:54,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:59:55,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:55,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 06:59:55,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:59:55,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,221 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-11 06:59:55,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-06-11 06:59:55,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:55,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:55,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:59:55,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:55,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:55,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:55,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:55,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:59:55,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:55,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:55,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:55,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 06:59:56,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:56,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 06:59:56,167 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-11 06:59:56,350 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-11 06:59:56,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:56,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:59:56,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:56,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:56,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:59:56,428 INFO L163 LiptonReduction]: Checked pairs total: 1665 [2021-06-11 06:59:56,428 INFO L165 LiptonReduction]: Total number of compositions: 45 [2021-06-11 06:59:56,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2302 [2021-06-11 06:59:56,442 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-06-11 06:59:56,443 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:59:56,443 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:56,443 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:56,443 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:56,446 INFO L82 PathProgramCache]: Analyzing trace with hash -646247942, now seen corresponding path program 1 times [2021-06-11 06:59:56,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:56,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689967256] [2021-06-11 06:59:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:56,623 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-11 06:59:56,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:56,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689967256] [2021-06-11 06:59:56,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:56,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 06:59:56,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976016380] [2021-06-11 06:59:56,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 06:59:56,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:56,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 06:59:56,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 06:59:56,654 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-11 06:59:56,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:56,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-11 06:59:56,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:56,700 INFO L129 PetriNetUnfolder]: 48/138 cut-off events. [2021-06-11 06:59:56,700 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:59:56,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 138 events. 48/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 669 event pairs, 16 based on Foata normal form. 11/144 useless extension candidates. Maximal degree in co-relation 239. Up to 61 conditions per place. [2021-06-11 06:59:56,702 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 6 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2021-06-11 06:59:56,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 77 flow [2021-06-11 06:59:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 06:59:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 06:59:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-06-11 06:59:56,710 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2021-06-11 06:59:56,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-06-11 06:59:56,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-06-11 06:59:56,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:56,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-06-11 06:59:56,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,719 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 280 transitions. [2021-06-11 06:59:56,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 77 flow [2021-06-11 06:59:56,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-11 06:59:56,722 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2021-06-11 06:59:56,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2021-06-11 06:59:56,723 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-06-11 06:59:56,724 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:56,724 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 22 transitions, 86 flow [2021-06-11 06:59:56,724 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 22 transitions, 86 flow [2021-06-11 06:59:56,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 22 transitions, 86 flow [2021-06-11 06:59:56,732 INFO L129 PetriNetUnfolder]: 48/142 cut-off events. [2021-06-11 06:59:56,732 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-06-11 06:59:56,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 142 events. 48/142 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 687 event pairs, 16 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 291. Up to 61 conditions per place. [2021-06-11 06:59:56,733 INFO L151 LiptonReduction]: Number of co-enabled transitions 142 [2021-06-11 06:59:56,735 INFO L163 LiptonReduction]: Checked pairs total: 40 [2021-06-11 06:59:56,735 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:59:56,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-06-11 06:59:56,736 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2021-06-11 06:59:56,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:56,736 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:56,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 06:59:56,736 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:56,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1441149507, now seen corresponding path program 1 times [2021-06-11 06:59:56,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:56,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711465047] [2021-06-11 06:59:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:56,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:56,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:56,774 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-11 06:59:56,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:56,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711465047] [2021-06-11 06:59:56,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:56,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 06:59:56,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950787778] [2021-06-11 06:59:56,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 06:59:56,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:56,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 06:59:56,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-11 06:59:56,786 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-11 06:59:56,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:56,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-11 06:59:56,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:56,816 INFO L129 PetriNetUnfolder]: 42/122 cut-off events. [2021-06-11 06:59:56,816 INFO L130 PetriNetUnfolder]: For 36/78 co-relation queries the response was YES. [2021-06-11 06:59:56,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 122 events. 42/122 cut-off events. For 36/78 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 535 event pairs, 4 based on Foata normal form. 3/122 useless extension candidates. Maximal degree in co-relation 345. Up to 53 conditions per place. [2021-06-11 06:59:56,817 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 8 selfloop transitions, 10 changer transitions 0/28 dead transitions. [2021-06-11 06:59:56,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 152 flow [2021-06-11 06:59:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 06:59:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 06:59:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-06-11 06:59:56,820 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7836134453781513 [2021-06-11 06:59:56,820 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-06-11 06:59:56,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-06-11 06:59:56,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:56,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-06-11 06:59:56,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,822 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,822 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 373 transitions. [2021-06-11 06:59:56,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 152 flow [2021-06-11 06:59:56,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 06:59:56,824 INFO L241 Difference]: Finished difference. Result has 31 places, 27 transitions, 134 flow [2021-06-11 06:59:56,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2021-06-11 06:59:56,824 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2021-06-11 06:59:56,825 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:56,825 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 27 transitions, 134 flow [2021-06-11 06:59:56,825 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 27 transitions, 134 flow [2021-06-11 06:59:56,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 27 transitions, 134 flow [2021-06-11 06:59:56,832 INFO L129 PetriNetUnfolder]: 42/129 cut-off events. [2021-06-11 06:59:56,832 INFO L130 PetriNetUnfolder]: For 87/100 co-relation queries the response was YES. [2021-06-11 06:59:56,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 129 events. 42/129 cut-off events. For 87/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 601 event pairs, 11 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 311. Up to 53 conditions per place. [2021-06-11 06:59:56,833 INFO L151 LiptonReduction]: Number of co-enabled transitions 162 [2021-06-11 06:59:56,835 INFO L163 LiptonReduction]: Checked pairs total: 75 [2021-06-11 06:59:56,835 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:59:56,835 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-06-11 06:59:56,836 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 134 flow [2021-06-11 06:59:56,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:56,836 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:56,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 06:59:56,836 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:56,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1441149786, now seen corresponding path program 1 times [2021-06-11 06:59:56,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:56,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079899158] [2021-06-11 06:59:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:56,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:56,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:56,874 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-11 06:59:56,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:56,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079899158] [2021-06-11 06:59:56,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:56,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 06:59:56,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490734424] [2021-06-11 06:59:56,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 06:59:56,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:56,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 06:59:56,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-11 06:59:56,888 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-11 06:59:56,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:56,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-11 06:59:56,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:56,923 INFO L129 PetriNetUnfolder]: 35/111 cut-off events. [2021-06-11 06:59:56,923 INFO L130 PetriNetUnfolder]: For 97/163 co-relation queries the response was YES. [2021-06-11 06:59:56,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 111 events. 35/111 cut-off events. For 97/163 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 480 event pairs, 6 based on Foata normal form. 10/119 useless extension candidates. Maximal degree in co-relation 346. Up to 46 conditions per place. [2021-06-11 06:59:56,925 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 10 selfloop transitions, 12 changer transitions 0/32 dead transitions. [2021-06-11 06:59:56,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 210 flow [2021-06-11 06:59:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 06:59:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 06:59:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-06-11 06:59:56,928 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2021-06-11 06:59:56,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-06-11 06:59:56,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-06-11 06:59:56,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:56,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-06-11 06:59:56,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,931 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,931 INFO L185 Difference]: Start difference. First operand has 31 places, 27 transitions, 134 flow. Second operand 4 states and 372 transitions. [2021-06-11 06:59:56,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 210 flow [2021-06-11 06:59:56,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 06:59:56,933 INFO L241 Difference]: Finished difference. Result has 37 places, 32 transitions, 222 flow [2021-06-11 06:59:56,933 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2021-06-11 06:59:56,933 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-06-11 06:59:56,933 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:56,934 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 32 transitions, 222 flow [2021-06-11 06:59:56,934 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 32 transitions, 222 flow [2021-06-11 06:59:56,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 222 flow [2021-06-11 06:59:56,940 INFO L129 PetriNetUnfolder]: 35/114 cut-off events. [2021-06-11 06:59:56,940 INFO L130 PetriNetUnfolder]: For 237/254 co-relation queries the response was YES. [2021-06-11 06:59:56,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 114 events. 35/114 cut-off events. For 237/254 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 514 event pairs, 8 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 362. Up to 46 conditions per place. [2021-06-11 06:59:56,941 INFO L151 LiptonReduction]: Number of co-enabled transitions 182 [2021-06-11 06:59:56,943 INFO L163 LiptonReduction]: Checked pairs total: 99 [2021-06-11 06:59:56,943 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:59:56,943 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-06-11 06:59:56,944 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 222 flow [2021-06-11 06:59:56,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:56,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:56,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 06:59:56,944 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:56,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:56,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1725285155, now seen corresponding path program 1 times [2021-06-11 06:59:56,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:56,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885486534] [2021-06-11 06:59:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:56,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:56,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:56,978 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-11 06:59:56,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:56,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885486534] [2021-06-11 06:59:56,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:56,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 06:59:56,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987030703] [2021-06-11 06:59:56,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 06:59:56,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:56,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 06:59:56,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 06:59:56,989 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-11 06:59:56,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:56,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:56,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-11 06:59:56,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:57,038 INFO L129 PetriNetUnfolder]: 118/285 cut-off events. [2021-06-11 06:59:57,038 INFO L130 PetriNetUnfolder]: For 512/562 co-relation queries the response was YES. [2021-06-11 06:59:57,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 285 events. 118/285 cut-off events. For 512/562 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1610 event pairs, 33 based on Foata normal form. 46/318 useless extension candidates. Maximal degree in co-relation 785. Up to 161 conditions per place. [2021-06-11 06:59:57,040 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 8 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2021-06-11 06:59:57,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 274 flow [2021-06-11 06:59:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 06:59:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 06:59:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2021-06-11 06:59:57,041 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7781512605042017 [2021-06-11 06:59:57,041 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2021-06-11 06:59:57,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2021-06-11 06:59:57,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:57,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2021-06-11 06:59:57,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,044 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,044 INFO L185 Difference]: Start difference. First operand has 37 places, 32 transitions, 222 flow. Second operand 5 states and 463 transitions. [2021-06-11 06:59:57,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 274 flow [2021-06-11 06:59:57,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 06:59:57,046 INFO L241 Difference]: Finished difference. Result has 44 places, 39 transitions, 282 flow [2021-06-11 06:59:57,046 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2021-06-11 06:59:57,046 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2021-06-11 06:59:57,047 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:57,047 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 39 transitions, 282 flow [2021-06-11 06:59:57,047 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 39 transitions, 282 flow [2021-06-11 06:59:57,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 39 transitions, 282 flow [2021-06-11 06:59:57,061 INFO L129 PetriNetUnfolder]: 118/285 cut-off events. [2021-06-11 06:59:57,061 INFO L130 PetriNetUnfolder]: For 615/681 co-relation queries the response was YES. [2021-06-11 06:59:57,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 285 events. 118/285 cut-off events. For 615/681 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1673 event pairs, 39 based on Foata normal form. 14/280 useless extension candidates. Maximal degree in co-relation 960. Up to 170 conditions per place. [2021-06-11 06:59:57,063 INFO L151 LiptonReduction]: Number of co-enabled transitions 300 [2021-06-11 06:59:57,066 INFO L163 LiptonReduction]: Checked pairs total: 100 [2021-06-11 06:59:57,066 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:59:57,066 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-06-11 06:59:57,067 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 282 flow [2021-06-11 06:59:57,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,067 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:57,067 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:57,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 06:59:57,067 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:57,067 INFO L82 PathProgramCache]: Analyzing trace with hash -872548810, now seen corresponding path program 1 times [2021-06-11 06:59:57,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:57,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143817665] [2021-06-11 06:59:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:57,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:57,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:57,108 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-11 06:59:57,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:57,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143817665] [2021-06-11 06:59:57,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:57,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 06:59:57,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511096990] [2021-06-11 06:59:57,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 06:59:57,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:57,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 06:59:57,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 06:59:57,122 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-11 06:59:57,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:57,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-11 06:59:57,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:57,198 INFO L129 PetriNetUnfolder]: 79/234 cut-off events. [2021-06-11 06:59:57,198 INFO L130 PetriNetUnfolder]: For 787/1010 co-relation queries the response was YES. [2021-06-11 06:59:57,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 234 events. 79/234 cut-off events. For 787/1010 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1405 event pairs, 5 based on Foata normal form. 136/361 useless extension candidates. Maximal degree in co-relation 925. Up to 153 conditions per place. [2021-06-11 06:59:57,200 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 15 changer transitions 3/49 dead transitions. [2021-06-11 06:59:57,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 386 flow [2021-06-11 06:59:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-11 06:59:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-11 06:59:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2021-06-11 06:59:57,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7779111644657863 [2021-06-11 06:59:57,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2021-06-11 06:59:57,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2021-06-11 06:59:57,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:57,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2021-06-11 06:59:57,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,205 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,205 INFO L185 Difference]: Start difference. First operand has 44 places, 39 transitions, 282 flow. Second operand 7 states and 648 transitions. [2021-06-11 06:59:57,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 386 flow [2021-06-11 06:59:57,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 06:59:57,207 INFO L241 Difference]: Finished difference. Result has 52 places, 46 transitions, 377 flow [2021-06-11 06:59:57,207 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2021-06-11 06:59:57,208 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2021-06-11 06:59:57,208 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:57,208 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 46 transitions, 377 flow [2021-06-11 06:59:57,208 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 46 transitions, 377 flow [2021-06-11 06:59:57,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 46 transitions, 377 flow [2021-06-11 06:59:57,234 INFO L129 PetriNetUnfolder]: 71/222 cut-off events. [2021-06-11 06:59:57,234 INFO L130 PetriNetUnfolder]: For 838/954 co-relation queries the response was YES. [2021-06-11 06:59:57,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 222 events. 71/222 cut-off events. For 838/954 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1351 event pairs, 5 based on Foata normal form. 11/222 useless extension candidates. Maximal degree in co-relation 957. Up to 141 conditions per place. [2021-06-11 06:59:57,236 INFO L151 LiptonReduction]: Number of co-enabled transitions 360 [2021-06-11 06:59:57,239 INFO L163 LiptonReduction]: Checked pairs total: 115 [2021-06-11 06:59:57,239 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:59:57,239 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-06-11 06:59:57,240 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 377 flow [2021-06-11 06:59:57,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,240 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:57,240 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:57,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 06:59:57,241 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:57,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1741828258, now seen corresponding path program 1 times [2021-06-11 06:59:57,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:57,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545950522] [2021-06-11 06:59:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:57,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:57,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:57,284 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-11 06:59:57,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:57,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545950522] [2021-06-11 06:59:57,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:57,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 06:59:57,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327293481] [2021-06-11 06:59:57,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 06:59:57,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 06:59:57,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-11 06:59:57,294 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-11 06:59:57,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:57,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-11 06:59:57,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:57,328 INFO L129 PetriNetUnfolder]: 99/304 cut-off events. [2021-06-11 06:59:57,329 INFO L130 PetriNetUnfolder]: For 1278/1435 co-relation queries the response was YES. [2021-06-11 06:59:57,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 304 events. 99/304 cut-off events. For 1278/1435 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2045 event pairs, 7 based on Foata normal form. 35/325 useless extension candidates. Maximal degree in co-relation 1373. Up to 214 conditions per place. [2021-06-11 06:59:57,330 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 7 selfloop transitions, 13 changer transitions 6/50 dead transitions. [2021-06-11 06:59:57,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 466 flow [2021-06-11 06:59:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 06:59:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 06:59:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-06-11 06:59:57,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2021-06-11 06:59:57,332 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-06-11 06:59:57,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-06-11 06:59:57,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:57,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-06-11 06:59:57,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,333 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,334 INFO L185 Difference]: Start difference. First operand has 52 places, 46 transitions, 377 flow. Second operand 4 states and 372 transitions. [2021-06-11 06:59:57,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 466 flow [2021-06-11 06:59:57,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 431 flow, removed 13 selfloop flow, removed 2 redundant places. [2021-06-11 06:59:57,339 INFO L241 Difference]: Finished difference. Result has 55 places, 43 transitions, 368 flow [2021-06-11 06:59:57,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2021-06-11 06:59:57,340 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2021-06-11 06:59:57,340 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:57,340 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 43 transitions, 368 flow [2021-06-11 06:59:57,340 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 43 transitions, 368 flow [2021-06-11 06:59:57,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 43 transitions, 368 flow [2021-06-11 06:59:57,354 INFO L129 PetriNetUnfolder]: 84/268 cut-off events. [2021-06-11 06:59:57,354 INFO L130 PetriNetUnfolder]: For 785/827 co-relation queries the response was YES. [2021-06-11 06:59:57,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 268 events. 84/268 cut-off events. For 785/827 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1798 event pairs, 6 based on Foata normal form. 9/260 useless extension candidates. Maximal degree in co-relation 987. Up to 76 conditions per place. [2021-06-11 06:59:57,356 INFO L151 LiptonReduction]: Number of co-enabled transitions 328 [2021-06-11 06:59:57,359 INFO L163 LiptonReduction]: Checked pairs total: 69 [2021-06-11 06:59:57,359 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:59:57,359 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-06-11 06:59:57,359 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 368 flow [2021-06-11 06:59:57,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,360 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:57,360 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:57,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 06:59:57,360 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1675786937, now seen corresponding path program 1 times [2021-06-11 06:59:57,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:57,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314789235] [2021-06-11 06:59:57,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:57,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:57,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:57,382 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-11 06:59:57,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:57,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314789235] [2021-06-11 06:59:57,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:57,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 06:59:57,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802870343] [2021-06-11 06:59:57,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 06:59:57,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:57,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 06:59:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-11 06:59:57,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-11 06:59:57,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:57,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-11 06:59:57,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:57,430 INFO L129 PetriNetUnfolder]: 110/337 cut-off events. [2021-06-11 06:59:57,430 INFO L130 PetriNetUnfolder]: For 1212/1292 co-relation queries the response was YES. [2021-06-11 06:59:57,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 337 events. 110/337 cut-off events. For 1212/1292 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 2425 event pairs, 10 based on Foata normal form. 26/341 useless extension candidates. Maximal degree in co-relation 1262. Up to 100 conditions per place. [2021-06-11 06:59:57,431 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 5 selfloop transitions, 12 changer transitions 5/44 dead transitions. [2021-06-11 06:59:57,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 44 transitions, 422 flow [2021-06-11 06:59:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 06:59:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 06:59:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-06-11 06:59:57,433 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7794117647058824 [2021-06-11 06:59:57,433 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-06-11 06:59:57,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-06-11 06:59:57,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:57,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-06-11 06:59:57,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,435 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,435 INFO L185 Difference]: Start difference. First operand has 55 places, 43 transitions, 368 flow. Second operand 4 states and 371 transitions. [2021-06-11 06:59:57,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 44 transitions, 422 flow [2021-06-11 06:59:57,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 44 transitions, 392 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-11 06:59:57,440 INFO L241 Difference]: Finished difference. Result has 57 places, 39 transitions, 336 flow [2021-06-11 06:59:57,441 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=57, PETRI_TRANSITIONS=39} [2021-06-11 06:59:57,441 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2021-06-11 06:59:57,441 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:57,441 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 39 transitions, 336 flow [2021-06-11 06:59:57,441 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 39 transitions, 336 flow [2021-06-11 06:59:57,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 39 transitions, 336 flow [2021-06-11 06:59:57,455 INFO L129 PetriNetUnfolder]: 60/228 cut-off events. [2021-06-11 06:59:57,455 INFO L130 PetriNetUnfolder]: For 929/974 co-relation queries the response was YES. [2021-06-11 06:59:57,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 883 conditions, 228 events. 60/228 cut-off events. For 929/974 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1507 event pairs, 6 based on Foata normal form. 9/226 useless extension candidates. Maximal degree in co-relation 854. Up to 76 conditions per place. [2021-06-11 06:59:57,457 INFO L151 LiptonReduction]: Number of co-enabled transitions 274 [2021-06-11 06:59:57,459 INFO L163 LiptonReduction]: Checked pairs total: 57 [2021-06-11 06:59:57,459 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:59:57,459 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-06-11 06:59:57,460 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions, 336 flow [2021-06-11 06:59:57,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,460 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:57,460 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:57,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 06:59:57,460 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:57,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:57,460 INFO L82 PathProgramCache]: Analyzing trace with hash -72883715, now seen corresponding path program 2 times [2021-06-11 06:59:57,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:57,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554254447] [2021-06-11 06:59:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:57,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:57,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:57,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:57,519 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-11 06:59:57,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:57,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554254447] [2021-06-11 06:59:57,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:57,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 06:59:57,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476394119] [2021-06-11 06:59:57,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-11 06:59:57,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:57,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-11 06:59:57,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-11 06:59:57,532 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 119 [2021-06-11 06:59:57,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 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) [2021-06-11 06:59:57,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:57,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 119 [2021-06-11 06:59:57,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:57,619 INFO L129 PetriNetUnfolder]: 55/224 cut-off events. [2021-06-11 06:59:57,619 INFO L130 PetriNetUnfolder]: For 1213/1506 co-relation queries the response was YES. [2021-06-11 06:59:57,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 224 events. 55/224 cut-off events. For 1213/1506 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 1535 event pairs, 1 based on Foata normal form. 161/375 useless extension candidates. Maximal degree in co-relation 976. Up to 80 conditions per place. [2021-06-11 06:59:57,620 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 2 selfloop transitions, 10 changer transitions 20/43 dead transitions. [2021-06-11 06:59:57,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 43 transitions, 410 flow [2021-06-11 06:59:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 06:59:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 06:59:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 825 transitions. [2021-06-11 06:59:57,622 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7703081232492998 [2021-06-11 06:59:57,622 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 825 transitions. [2021-06-11 06:59:57,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 825 transitions. [2021-06-11 06:59:57,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:57,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 825 transitions. [2021-06-11 06:59:57,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.66666666666667) internal successors, (825), 9 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,625 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,625 INFO L185 Difference]: Start difference. First operand has 57 places, 39 transitions, 336 flow. Second operand 9 states and 825 transitions. [2021-06-11 06:59:57,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 43 transitions, 410 flow [2021-06-11 06:59:57,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 43 transitions, 393 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-11 06:59:57,630 INFO L241 Difference]: Finished difference. Result has 66 places, 23 transitions, 200 flow [2021-06-11 06:59:57,630 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=66, PETRI_TRANSITIONS=23} [2021-06-11 06:59:57,630 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 39 predicate places. [2021-06-11 06:59:57,630 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:57,630 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 23 transitions, 200 flow [2021-06-11 06:59:57,630 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 23 transitions, 200 flow [2021-06-11 06:59:57,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 23 transitions, 200 flow [2021-06-11 06:59:57,633 INFO L129 PetriNetUnfolder]: 5/26 cut-off events. [2021-06-11 06:59:57,633 INFO L130 PetriNetUnfolder]: For 94/98 co-relation queries the response was YES. [2021-06-11 06:59:57,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 26 events. 5/26 cut-off events. For 94/98 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 106. Up to 10 conditions per place. [2021-06-11 06:59:57,634 INFO L151 LiptonReduction]: Number of co-enabled transitions 32 [2021-06-11 06:59:57,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:57,666 INFO L163 LiptonReduction]: Checked pairs total: 2 [2021-06-11 06:59:57,666 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 06:59:57,666 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-06-11 06:59:57,668 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 22 transitions, 198 flow [2021-06-11 06:59:57,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 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) [2021-06-11 06:59:57,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:59:57,668 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:59:57,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 06:59:57,668 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:59:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:59:57,669 INFO L82 PathProgramCache]: Analyzing trace with hash 300973829, now seen corresponding path program 1 times [2021-06-11 06:59:57,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:59:57,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687508632] [2021-06-11 06:59:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:59:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:59:57,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:59:57,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:59:57,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:59:57,704 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-11 06:59:57,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:59:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:59:57,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687508632] [2021-06-11 06:59:57,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:59:57,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 06:59:57,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453615384] [2021-06-11 06:59:57,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 06:59:57,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:59:57,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 06:59:57,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 06:59:57,711 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-06-11 06:59:57,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 22 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:59:57,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-06-11 06:59:57,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:59:57,726 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-06-11 06:59:57,726 INFO L130 PetriNetUnfolder]: For 113/119 co-relation queries the response was YES. [2021-06-11 06:59:57,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 24 events. 5/24 cut-off events. For 113/119 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 110. Up to 10 conditions per place. [2021-06-11 06:59:57,726 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-06-11 06:59:57,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 21 transitions, 188 flow [2021-06-11 06:59:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 06:59:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 06:59:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2021-06-11 06:59:57,727 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7283333333333334 [2021-06-11 06:59:57,727 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2021-06-11 06:59:57,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2021-06-11 06:59:57,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:59:57,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2021-06-11 06:59:57,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,729 INFO L185 Difference]: Start difference. First operand has 57 places, 22 transitions, 198 flow. Second operand 5 states and 437 transitions. [2021-06-11 06:59:57,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 21 transitions, 188 flow [2021-06-11 06:59:57,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 21 transitions, 100 flow, removed 11 selfloop flow, removed 22 redundant places. [2021-06-11 06:59:57,731 INFO L241 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2021-06-11 06:59:57,731 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2021-06-11 06:59:57,731 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-06-11 06:59:57,731 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:59:57,731 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 0 transitions, 0 flow [2021-06-11 06:59:57,731 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 0 transitions, 0 flow [2021-06-11 06:59:57,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 06:59:57,731 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 06:59:57,731 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:59:57,731 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. [2021-06-11 06:59:57,731 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 06:59:57,732 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 06:59:57,732 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:59:57,732 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-06-11 06:59:57,732 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 06:59:57,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:59:57,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 06:59:57,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 06:59:57 BasicIcfg [2021-06-11 06:59:57,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 06:59:57,735 INFO L168 Benchmark]: Toolchain (without parser) took 4543.67 ms. Allocated memory was 327.2 MB in the beginning and 394.3 MB in the end (delta: 67.1 MB). Free memory was 289.9 MB in the beginning and 220.9 MB in the end (delta: 69.0 MB). Peak memory consumption was 138.2 MB. Max. memory is 16.0 GB. [2021-06-11 06:59:57,735 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 327.2 MB. Free memory is still 308.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 06:59:57,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.33 ms. Allocated memory is still 327.2 MB. Free memory was 289.6 MB in the beginning and 289.8 MB in the end (delta: -203.2 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-11 06:59:57,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.74 ms. Allocated memory is still 327.2 MB. Free memory was 289.8 MB in the beginning and 287.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 06:59:57,736 INFO L168 Benchmark]: Boogie Preprocessor took 12.67 ms. Allocated memory is still 327.2 MB. Free memory was 287.7 MB in the beginning and 286.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 06:59:57,736 INFO L168 Benchmark]: RCFGBuilder took 387.62 ms. Allocated memory is still 327.2 MB. Free memory was 285.6 MB in the beginning and 262.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-11 06:59:57,736 INFO L168 Benchmark]: TraceAbstraction took 3763.19 ms. Allocated memory was 327.2 MB in the beginning and 394.3 MB in the end (delta: 67.1 MB). Free memory was 261.5 MB in the beginning and 220.9 MB in the end (delta: 40.6 MB). Peak memory consumption was 109.8 MB. Max. memory is 16.0 GB. [2021-06-11 06:59:57,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 327.2 MB. Free memory is still 308.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 335.33 ms. Allocated memory is still 327.2 MB. Free memory was 289.6 MB in the beginning and 289.8 MB in the end (delta: -203.2 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.74 ms. Allocated memory is still 327.2 MB. Free memory was 289.8 MB in the beginning and 287.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.67 ms. Allocated memory is still 327.2 MB. Free memory was 287.7 MB in the beginning and 286.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 387.62 ms. Allocated memory is still 327.2 MB. Free memory was 285.6 MB in the beginning and 262.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3763.19 ms. Allocated memory was 327.2 MB in the beginning and 394.3 MB in the end (delta: 67.1 MB). Free memory was 261.5 MB in the beginning and 220.9 MB in the end (delta: 40.6 MB). Peak memory consumption was 109.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2289.3ms, 68 PlacesBefore, 27 PlacesAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 45 TotalNumberOfCompositions, 1665 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1083, positive: 1003, positive conditional: 0, positive unconditional: 1003, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 641, positive: 610, positive conditional: 0, positive unconditional: 610, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 641, positive: 610, positive conditional: 0, positive unconditional: 610, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 641, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 153, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 116, negative conditional: 0, negative unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1083, positive: 393, positive conditional: 0, positive unconditional: 393, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 641, unknown conditional: 0, unknown unconditional: 641] , Statistics on independence cache: Total cache size (in pairs): 1049, Positive cache size: 1018, Positive conditional cache size: 0, Positive unconditional cache size: 1018, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.2ms, 28 PlacesBefore, 28 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 142 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 40 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 18, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 1051, Positive cache size: 1020, Positive conditional cache size: 0, Positive unconditional cache size: 1020, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0ms, 31 PlacesBefore, 31 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 162 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 75 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 5, negative conditional: 0, negative unconditional: 5, 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: 18, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1051, Positive cache size: 1020, Positive conditional cache size: 0, Positive unconditional cache size: 1020, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2ms, 37 PlacesBefore, 37 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 99 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , 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: 28, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 1052, Positive cache size: 1021, Positive conditional cache size: 0, Positive unconditional cache size: 1021, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.1ms, 44 PlacesBefore, 44 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 300 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 100 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 5, negative conditional: 0, negative unconditional: 5, 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: 35, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1052, Positive cache size: 1021, Positive conditional cache size: 0, Positive unconditional cache size: 1021, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.1ms, 52 PlacesBefore, 52 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 115 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , 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: 50, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 1053, Positive cache size: 1022, Positive conditional cache size: 0, Positive unconditional cache size: 1022, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.0ms, 55 PlacesBefore, 55 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 328 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 69 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 33, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 3, negative conditional: 0, negative unconditional: 3, 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: 33, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1053, Positive cache size: 1022, Positive conditional cache size: 0, Positive unconditional cache size: 1022, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.1ms, 57 PlacesBefore, 57 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 274 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 57 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 3, negative conditional: 0, negative unconditional: 3, 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: 30, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1053, Positive cache size: 1022, Positive conditional cache size: 0, Positive unconditional cache size: 1022, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.9ms, 66 PlacesBefore, 57 PlacesAfterwards, 23 TransitionsBefore, 22 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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): 1097, Positive cache size: 1066, Positive conditional cache size: 0, Positive unconditional cache size: 1066, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 38 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): 1097, Positive cache size: 1066, Positive conditional cache size: 0, Positive unconditional cache size: 1066, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - 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, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3663.8ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 515.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2367.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 63 SDtfs, 22 SDslu, 28 SDs, 0 SdLazy, 121 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 134.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 158.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=377occurred in iteration=5, InterpolantAutomatonStates: 45, 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: 18.6ms SsaConstructionTime, 130.6ms SatisfiabilityAnalysisTime, 338.6ms InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...