/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 16:02:04,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 16:02:04,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 16:02:04,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 16:02:04,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 16:02:04,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 16:02:04,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 16:02:04,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 16:02:04,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 16:02:04,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 16:02:04,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 16:02:04,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 16:02:04,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 16:02:04,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 16:02:04,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 16:02:04,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 16:02:04,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 16:02:04,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 16:02:04,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 16:02:04,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 16:02:04,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 16:02:04,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 16:02:04,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 16:02:04,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 16:02:04,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 16:02:04,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 16:02:04,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 16:02:04,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 16:02:04,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 16:02:04,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 16:02:04,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 16:02:04,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 16:02:04,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 16:02:04,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 16:02:04,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 16:02:04,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 16:02:04,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 16:02:04,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 16:02:04,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 16:02:04,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 16:02:04,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 16:02:04,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 16:02:04,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 16:02:04,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 16:02:04,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 16:02:04,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 16:02:04,551 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 16:02:04,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 16:02:04,551 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 16:02:04,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 16:02:04,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 16:02:04,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 16:02:04,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 16:02:04,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 16:02:04,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 16:02:04,553 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 16:02:04,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 16:02:04,553 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 16:02:04,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 16:02:04,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 16:02:04,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 16:02:04,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 16:02:04,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 16:02:04,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 16:02:04,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 16:02:04,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 16:02:04,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 16:02:04,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 16:02:04,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 16:02:04,555 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 16:02:04,555 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 16:02:04,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 16:02:04,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 16:02:04,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 16:02:04,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 16:02:04,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 16:02:04,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-11 16:02:04,905 INFO L275 PluginConnector]: CDTParser initialized [2021-06-11 16:02:04,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-06-11 16:02:04,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d78cb4f/8a9fe615172548719eaba0eb94008e90/FLAG494a61660 [2021-06-11 16:02:05,448 INFO L306 CDTParser]: Found 1 translation units. [2021-06-11 16:02:05,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-06-11 16:02:05,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d78cb4f/8a9fe615172548719eaba0eb94008e90/FLAG494a61660 [2021-06-11 16:02:05,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d78cb4f/8a9fe615172548719eaba0eb94008e90 [2021-06-11 16:02:05,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 16:02:05,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-11 16:02:05,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-11 16:02:05,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-11 16:02:05,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-11 16:02:05,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 04:02:05" (1/1) ... [2021-06-11 16:02:05,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66643828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:05, skipping insertion in model container [2021-06-11 16:02:05,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 04:02:05" (1/1) ... [2021-06-11 16:02:05,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-11 16:02:06,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-11 16:02:06,164 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/safe006_pso.oepc.i[950,963] [2021-06-11 16:02:06,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 16:02:06,344 INFO L203 MainTranslator]: Completed pre-run [2021-06-11 16:02:06,355 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/safe006_pso.oepc.i[950,963] [2021-06-11 16:02:06,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 16:02:06,458 INFO L208 MainTranslator]: Completed translation [2021-06-11 16:02:06,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06 WrapperNode [2021-06-11 16:02:06,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-11 16:02:06,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 16:02:06,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 16:02:06,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 16:02:06,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 16:02:06,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 16:02:06,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 16:02:06,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 16:02:06,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (1/1) ... [2021-06-11 16:02:06,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 16:02:06,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 16:02:06,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 16:02:06,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 16:02:06,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (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 16:02:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-11 16:02:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-11 16:02:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-11 16:02:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-11 16:02:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-11 16:02:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-11 16:02:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-11 16:02:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-11 16:02:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-11 16:02:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-11 16:02:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 16:02:06,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 16:02:06,634 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 16:02:07,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 16:02:07,047 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-11 16:02:07,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 04:02:07 BoogieIcfgContainer [2021-06-11 16:02:07,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 16:02:07,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 16:02:07,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 16:02:07,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 16:02:07,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.06 04:02:05" (1/3) ... [2021-06-11 16:02:07,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2f5acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 04:02:07, skipping insertion in model container [2021-06-11 16:02:07,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:02:06" (2/3) ... [2021-06-11 16:02:07,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2f5acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 04:02:07, skipping insertion in model container [2021-06-11 16:02:07,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 04:02:07" (3/3) ... [2021-06-11 16:02:07,059 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc.i [2021-06-11 16:02:07,069 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 16:02:07,074 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 16:02:07,074 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 16:02:07,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,107 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,112 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,117 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:02:07,120 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 16:02:07,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-11 16:02:07,152 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 16:02:07,152 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 16:02:07,152 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 16:02:07,152 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 16:02:07,152 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 16:02:07,152 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 16:02:07,152 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 16:02:07,153 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 16:02:07,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-06-11 16:02:07,188 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-06-11 16:02:07,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:02:07,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-11 16:02:07,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-06-11 16:02:07,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-06-11 16:02:07,208 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:02:07,223 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-06-11 16:02:07,229 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-06-11 16:02:07,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-06-11 16:02:07,257 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-06-11 16:02:07,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:02:07,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-06-11 16:02:07,260 INFO L151 LiptonReduction]: Number of co-enabled transitions 456 [2021-06-11 16:02:07,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:02:07,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:02:07,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:02:07,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:07,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:07,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:08,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:02:08,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:02:08,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:02:08,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:08,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:08,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:08,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:02:08,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:02:08,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:02:08,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:08,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:08,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:08,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,534 INFO L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-06-11 16:02:08,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:08,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:02:08,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:02:08,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 16:02:08,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-11 16:02:08,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,822 INFO L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-06-11 16:02:08,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:02:08,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:08,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:02:08,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:02:09,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:02:09,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:09,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:02:09,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:02:09,325 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-11 16:02:09,564 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-11 16:02:09,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:09,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:02:09,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:09,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:02:09,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:02:09,686 INFO L163 LiptonReduction]: Checked pairs total: 858 [2021-06-11 16:02:09,687 INFO L165 LiptonReduction]: Total number of compositions: 40 [2021-06-11 16:02:09,689 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2482 [2021-06-11 16:02:09,700 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-11 16:02:09,701 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:02:09,701 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:02:09,701 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-11 16:02:09,702 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:02:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:02:09,705 INFO L82 PathProgramCache]: Analyzing trace with hash 203969178, now seen corresponding path program 1 times [2021-06-11 16:02:09,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:02:09,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463479882] [2021-06-11 16:02:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:02:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:02:09,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:09,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:09,841 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 16:02:09,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463479882] [2021-06-11 16:02:09,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:02:09,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 16:02:09,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563503904] [2021-06-11 16:02:09,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-11 16:02:09,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:02:09,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-11 16:02:09,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-11 16:02:09,862 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 101 [2021-06-11 16:02:09,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 16:02:09,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:02:09,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 101 [2021-06-11 16:02:09,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:02:09,876 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 16:02:09,876 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:02:09,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 16:02:09,878 INFO L132 encePairwiseOnDemand]: 100/101 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2021-06-11 16:02:09,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2021-06-11 16:02:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-11 16:02:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-11 16:02:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 189 transitions. [2021-06-11 16:02:09,886 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9356435643564357 [2021-06-11 16:02:09,886 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 189 transitions. [2021-06-11 16:02:09,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 189 transitions. [2021-06-11 16:02:09,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:02:09,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 189 transitions. [2021-06-11 16:02:09,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 16:02:09,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 16:02:09,895 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 16:02:09,897 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 189 transitions. [2021-06-11 16:02:09,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2021-06-11 16:02:09,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 16:02:09,900 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2021-06-11 16:02:09,902 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2021-06-11 16:02:09,902 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-11 16:02:09,903 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:02:09,903 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 12 transitions, 28 flow [2021-06-11 16:02:09,903 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 12 transitions, 28 flow [2021-06-11 16:02:09,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 12 transitions, 28 flow [2021-06-11 16:02:09,906 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 16:02:09,906 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:02:09,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 16:02:09,906 INFO L151 LiptonReduction]: Number of co-enabled transitions 54 [2021-06-11 16:02:09,907 INFO L163 LiptonReduction]: Checked pairs total: 60 [2021-06-11 16:02:09,908 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 16:02:09,908 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-06-11 16:02:09,909 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2021-06-11 16:02:09,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 16:02:09,909 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:02:09,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 16:02:09,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 16:02:09,910 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:02:09,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:02:09,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2028076998, now seen corresponding path program 1 times [2021-06-11 16:02:09,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:02:09,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019193639] [2021-06-11 16:02:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:02:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:02:10,020 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-11 16:02:10,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 16:02:10,032 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 16:02:10,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019193639] [2021-06-11 16:02:10,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:02:10,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 16:02:10,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298816106] [2021-06-11 16:02:10,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 16:02:10,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:02:10,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 16:02:10,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 16:02:10,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 101 [2021-06-11 16:02:10,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 16:02:10,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:02:10,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 101 [2021-06-11 16:02:10,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:02:10,049 INFO L129 PetriNetUnfolder]: 3/22 cut-off events. [2021-06-11 16:02:10,049 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:02:10,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 1 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 31. Up to 10 conditions per place. [2021-06-11 16:02:10,049 INFO L132 encePairwiseOnDemand]: 97/101 looper letters, 3 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2021-06-11 16:02:10,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 44 flow [2021-06-11 16:02:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 16:02:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 16:02:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2021-06-11 16:02:10,052 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7854785478547854 [2021-06-11 16:02:10,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2021-06-11 16:02:10,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2021-06-11 16:02:10,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:02:10,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2021-06-11 16:02:10,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 16:02:10,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 16:02:10,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 16:02:10,056 INFO L185 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 3 states and 238 transitions. [2021-06-11 16:02:10,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 44 flow [2021-06-11 16:02:10,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 44 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 16:02:10,058 INFO L241 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2021-06-11 16:02:10,058 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2021-06-11 16:02:10,058 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2021-06-11 16:02:10,058 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:02:10,058 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 14 transitions, 47 flow [2021-06-11 16:02:10,059 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 14 transitions, 47 flow [2021-06-11 16:02:10,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 14 transitions, 47 flow [2021-06-11 16:02:10,063 INFO L129 PetriNetUnfolder]: 3/22 cut-off events. [2021-06-11 16:02:10,063 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:02:10,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 1 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 33. Up to 10 conditions per place. [2021-06-11 16:02:10,063 INFO L151 LiptonReduction]: Number of co-enabled transitions 52 [2021-06-11 16:02:10,065 INFO L163 LiptonReduction]: Checked pairs total: 32 [2021-06-11 16:02:10,065 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 16:02:10,065 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-06-11 16:02:10,066 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2021-06-11 16:02:10,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 16:02:10,066 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:02:10,066 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 16:02:10,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 16:02:10,066 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:02:10,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:02:10,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1562549611, now seen corresponding path program 1 times [2021-06-11 16:02:10,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:02:10,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662126345] [2021-06-11 16:02:10,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:02:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:02:10,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:10,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:02:10,107 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 16:02:10,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662126345] [2021-06-11 16:02:10,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:02:10,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 16:02:10,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168910943] [2021-06-11 16:02:10,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 16:02:10,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:02:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 16:02:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 16:02:10,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 101 [2021-06-11 16:02:10,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 16:02:10,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:02:10,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 101 [2021-06-11 16:02:10,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:02:10,117 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-06-11 16:02:10,117 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-11 16:02:10,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 18 events. 2/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 31. Up to 8 conditions per place. [2021-06-11 16:02:10,118 INFO L132 encePairwiseOnDemand]: 98/101 looper letters, 1 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2021-06-11 16:02:10,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 55 flow [2021-06-11 16:02:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 16:02:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 16:02:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2021-06-11 16:02:10,120 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8151815181518152 [2021-06-11 16:02:10,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2021-06-11 16:02:10,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2021-06-11 16:02:10,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:02:10,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2021-06-11 16:02:10,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 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 16:02:10,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 16:02:10,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 16:02:10,123 INFO L185 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states and 247 transitions. [2021-06-11 16:02:10,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 55 flow [2021-06-11 16:02:10,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 52 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 16:02:10,124 INFO L241 Difference]: Finished difference. Result has 22 places, 14 transitions, 55 flow [2021-06-11 16:02:10,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2021-06-11 16:02:10,125 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2021-06-11 16:02:10,125 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:02:10,125 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 14 transitions, 55 flow [2021-06-11 16:02:10,125 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 14 transitions, 55 flow [2021-06-11 16:02:10,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 14 transitions, 55 flow [2021-06-11 16:02:10,129 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-06-11 16:02:10,129 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-06-11 16:02:10,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 20 events. 2/20 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 1 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 33. Up to 8 conditions per place. [2021-06-11 16:02:10,130 INFO L151 LiptonReduction]: Number of co-enabled transitions 52 [2021-06-11 16:02:10,131 INFO L163 LiptonReduction]: Checked pairs total: 32 [2021-06-11 16:02:10,132 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 16:02:10,132 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-06-11 16:02:10,133 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 55 flow [2021-06-11 16:02:10,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 16:02:10,133 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:02:10,133 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 16:02:10,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 16:02:10,133 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:02:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:02:10,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1554122850, now seen corresponding path program 1 times [2021-06-11 16:02:10,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:02:10,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186897687] [2021-06-11 16:02:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:02:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:02:10,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:10,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:02:10,169 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 16:02:10,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186897687] [2021-06-11 16:02:10,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:02:10,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 16:02:10,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243708069] [2021-06-11 16:02:10,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 16:02:10,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:02:10,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 16:02:10,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 16:02:10,171 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 101 [2021-06-11 16:02:10,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 16:02:10,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:02:10,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 101 [2021-06-11 16:02:10,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:02:10,179 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-06-11 16:02:10,179 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-11 16:02:10,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 16 events. 1/16 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 29. Up to 6 conditions per place. [2021-06-11 16:02:10,182 INFO L132 encePairwiseOnDemand]: 98/101 looper letters, 1 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2021-06-11 16:02:10,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 63 flow [2021-06-11 16:02:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 16:02:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 16:02:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2021-06-11 16:02:10,184 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8151815181518152 [2021-06-11 16:02:10,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2021-06-11 16:02:10,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2021-06-11 16:02:10,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:02:10,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2021-06-11 16:02:10,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 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 16:02:10,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 16:02:10,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 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 16:02:10,187 INFO L185 Difference]: Start difference. First operand has 22 places, 14 transitions, 55 flow. Second operand 3 states and 247 transitions. [2021-06-11 16:02:10,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 63 flow [2021-06-11 16:02:10,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 16:02:10,188 INFO L241 Difference]: Finished difference. Result has 23 places, 14 transitions, 60 flow [2021-06-11 16:02:10,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2021-06-11 16:02:10,188 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2021-06-11 16:02:10,188 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:02:10,189 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 14 transitions, 60 flow [2021-06-11 16:02:10,189 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 14 transitions, 60 flow [2021-06-11 16:02:10,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 14 transitions, 60 flow [2021-06-11 16:02:10,192 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-06-11 16:02:10,192 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-06-11 16:02:10,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 16 events. 1/16 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 29. Up to 6 conditions per place. [2021-06-11 16:02:10,193 INFO L151 LiptonReduction]: Number of co-enabled transitions 52 [2021-06-11 16:02:10,194 INFO L163 LiptonReduction]: Checked pairs total: 32 [2021-06-11 16:02:10,194 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 16:02:10,194 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 16:02:10,195 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 60 flow [2021-06-11 16:02:10,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 16:02:10,195 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:02:10,196 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 16:02:10,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 16:02:10,196 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:02:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:02:10,200 INFO L82 PathProgramCache]: Analyzing trace with hash -933169403, now seen corresponding path program 1 times [2021-06-11 16:02:10,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:02:10,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741207703] [2021-06-11 16:02:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:02:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:02:10,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:10,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:02:10,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:10,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:02:10,282 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-11 16:02:10,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 16:02:10,290 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 16:02:10,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741207703] [2021-06-11 16:02:10,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:02:10,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 16:02:10,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437355941] [2021-06-11 16:02:10,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 16:02:10,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:02:10,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 16:02:10,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 16:02:10,295 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2021-06-11 16:02:10,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 16:02:10,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:02:10,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2021-06-11 16:02:10,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:02:10,328 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-06-11 16:02:10,328 INFO L130 PetriNetUnfolder]: For 17/19 co-relation queries the response was YES. [2021-06-11 16:02:10,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 19 events. 1/19 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 2/21 useless extension candidates. Maximal degree in co-relation 43. Up to 7 conditions per place. [2021-06-11 16:02:10,329 INFO L132 encePairwiseOnDemand]: 97/101 looper letters, 2 selfloop transitions, 3 changer transitions 3/15 dead transitions. [2021-06-11 16:02:10,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 15 transitions, 83 flow [2021-06-11 16:02:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 16:02:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 16:02:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2021-06-11 16:02:10,331 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7425742574257426 [2021-06-11 16:02:10,331 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 300 transitions. [2021-06-11 16:02:10,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 300 transitions. [2021-06-11 16:02:10,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:02:10,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 300 transitions. [2021-06-11 16:02:10,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 16:02:10,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 16:02:10,335 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 16:02:10,335 INFO L185 Difference]: Start difference. First operand has 23 places, 14 transitions, 60 flow. Second operand 4 states and 300 transitions. [2021-06-11 16:02:10,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 15 transitions, 83 flow [2021-06-11 16:02:10,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 75 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 16:02:10,337 INFO L241 Difference]: Finished difference. Result has 26 places, 12 transitions, 58 flow [2021-06-11 16:02:10,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=26, PETRI_TRANSITIONS=12} [2021-06-11 16:02:10,338 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2021-06-11 16:02:10,338 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:02:10,338 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 12 transitions, 58 flow [2021-06-11 16:02:10,338 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 12 transitions, 58 flow [2021-06-11 16:02:10,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 12 transitions, 58 flow [2021-06-11 16:02:10,342 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 16:02:10,342 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-11 16:02:10,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 12 events. 0/12 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-11 16:02:10,343 INFO L151 LiptonReduction]: Number of co-enabled transitions 24 [2021-06-11 16:02:10,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:10,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:02:10,385 INFO L163 LiptonReduction]: Checked pairs total: 14 [2021-06-11 16:02:10,386 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 16:02:10,386 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-06-11 16:02:10,389 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 11 transitions, 56 flow [2021-06-11 16:02:10,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 16:02:10,390 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:02:10,390 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 16:02:10,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 16:02:10,390 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:02:10,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:02:10,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1136525927, now seen corresponding path program 1 times [2021-06-11 16:02:10,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:02:10,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661398227] [2021-06-11 16:02:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:02:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:02:10,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:10,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:02:10,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:02:10,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:02:10,471 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 16:02:10,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661398227] [2021-06-11 16:02:10,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:02:10,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 16:02:10,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299727348] [2021-06-11 16:02:10,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 16:02:10,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:02:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 16:02:10,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 16:02:10,473 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2021-06-11 16:02:10,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 11 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 16:02:10,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:02:10,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2021-06-11 16:02:10,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:02:10,485 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 16:02:10,485 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-06-11 16:02:10,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 10 events. 0/10 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 2/12 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 16:02:10,485 INFO L132 encePairwiseOnDemand]: 99/102 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-06-11 16:02:10,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 10 transitions, 50 flow [2021-06-11 16:02:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 16:02:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 16:02:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2021-06-11 16:02:10,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7671568627450981 [2021-06-11 16:02:10,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2021-06-11 16:02:10,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2021-06-11 16:02:10,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:02:10,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2021-06-11 16:02:10,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 16:02:10,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 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 16:02:10,490 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 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 16:02:10,490 INFO L185 Difference]: Start difference. First operand has 25 places, 11 transitions, 56 flow. Second operand 4 states and 313 transitions. [2021-06-11 16:02:10,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 10 transitions, 50 flow [2021-06-11 16:02:10,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 30 flow, removed 1 selfloop flow, removed 9 redundant places. [2021-06-11 16:02:10,490 INFO L241 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2021-06-11 16:02:10,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2021-06-11 16:02:10,491 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-11 16:02:10,491 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:02:10,491 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 0 transitions, 0 flow [2021-06-11 16:02:10,491 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 0 transitions, 0 flow [2021-06-11 16:02:10,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 16:02:10,492 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 16:02:10,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:02:10,492 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 16:02:10,492 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 16:02:10,492 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 16:02:10,492 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 16:02:10,492 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-06-11 16:02:10,493 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 16:02:10,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 16:02:10,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 16:02:10,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 04:02:10 BasicIcfg [2021-06-11 16:02:10,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 16:02:10,497 INFO L168 Benchmark]: Toolchain (without parser) took 4554.29 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 335.5 MB in the beginning and 345.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 66.0 MB. Max. memory is 16.0 GB. [2021-06-11 16:02:10,498 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 373.3 MB. Free memory is still 353.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 16:02:10,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.88 ms. Allocated memory is still 373.3 MB. Free memory was 335.3 MB in the beginning and 335.8 MB in the end (delta: -488.7 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-11 16:02:10,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.65 ms. Allocated memory is still 373.3 MB. Free memory was 335.8 MB in the beginning and 333.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 16:02:10,498 INFO L168 Benchmark]: Boogie Preprocessor took 33.87 ms. Allocated memory is still 373.3 MB. Free memory was 333.7 MB in the beginning and 332.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 16:02:10,498 INFO L168 Benchmark]: RCFGBuilder took 520.55 ms. Allocated memory is still 373.3 MB. Free memory was 332.6 MB in the beginning and 311.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-06-11 16:02:10,499 INFO L168 Benchmark]: TraceAbstraction took 3443.37 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 311.6 MB in the beginning and 345.3 MB in the end (delta: -33.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.0 GB. [2021-06-11 16:02:10,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 373.3 MB. Free memory is still 353.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 514.88 ms. Allocated memory is still 373.3 MB. Free memory was 335.3 MB in the beginning and 335.8 MB in the end (delta: -488.7 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.65 ms. Allocated memory is still 373.3 MB. Free memory was 335.8 MB in the beginning and 333.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.87 ms. Allocated memory is still 373.3 MB. Free memory was 333.7 MB in the beginning and 332.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 520.55 ms. Allocated memory is still 373.3 MB. Free memory was 332.6 MB in the beginning and 311.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3443.37 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 311.6 MB in the beginning and 345.3 MB in the end (delta: -33.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2458.1ms, 55 PlacesBefore, 19 PlacesAfterwards, 49 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 858 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 594, positive: 535, positive conditional: 535, positive unconditional: 0, negative: 59, negative conditional: 59, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 594, positive: 535, positive conditional: 0, positive unconditional: 535, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 594, positive: 535, positive conditional: 0, positive unconditional: 535, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 408, positive: 385, positive conditional: 0, positive unconditional: 385, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 408, positive: 383, positive conditional: 0, positive unconditional: 383, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 100, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 594, positive: 150, positive conditional: 0, positive unconditional: 150, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 408, unknown conditional: 0, unknown unconditional: 408] , Statistics on independence cache: Total cache size (in pairs): 408, Positive cache size: 385, Positive conditional cache size: 0, Positive unconditional cache size: 385, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5ms, 18 PlacesBefore, 17 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 60 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 33, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 33, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 33, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.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: 23, positive conditional: 0, positive unconditional: 23, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 408, Positive cache size: 385, Positive conditional cache size: 0, Positive unconditional cache size: 385, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0ms, 20 PlacesBefore, 20 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 52 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 14, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.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: 14, positive: 8, positive conditional: 0, positive unconditional: 8, 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): 409, Positive cache size: 386, Positive conditional cache size: 0, Positive unconditional cache size: 386, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3ms, 22 PlacesBefore, 22 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 52 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 15, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 15, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.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: 15, positive: 9, positive conditional: 0, positive unconditional: 9, 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): 410, Positive cache size: 387, Positive conditional cache size: 0, Positive unconditional cache size: 387, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2ms, 23 PlacesBefore, 23 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 52 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 12, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.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: 12, positive: 6, positive conditional: 0, positive unconditional: 6, 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): 411, Positive cache size: 388, Positive conditional cache size: 0, Positive unconditional cache size: 388, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 47.3ms, 26 PlacesBefore, 25 PlacesAfterwards, 12 TransitionsBefore, 11 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 7, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 412, Positive cache size: 388, Positive conditional cache size: 0, Positive unconditional cache size: 388, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 18 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: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 412, Positive cache size: 388, Positive conditional cache size: 0, Positive unconditional cache size: 388, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3346.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 166.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2545.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, InterpolantAutomatonStates: 19, 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: 16.0ms SsaConstructionTime, 99.7ms SatisfiabilityAnalysisTime, 280.7ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...