/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:02:38,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:02:38,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:02:38,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:02:38,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:02:38,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:02:38,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:02:38,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:02:38,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:02:38,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:02:38,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:02:38,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:02:38,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:02:38,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:02:38,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:02:38,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:02:38,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:02:38,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:02:38,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:02:38,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:02:38,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:02:38,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:02:38,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:02:38,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:02:38,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:02:38,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:02:38,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:02:38,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:02:38,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:02:38,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:02:38,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:02:38,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:02:38,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:02:38,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:02:38,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:02:38,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:02:38,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:02:38,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:02:38,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:02:38,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:02:38,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:02:38,528 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-RepeatedVariableLbe.epf [2021-03-25 05:02:38,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:02:38,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:02:38,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:02:38,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:02:38,549 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:02:38,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:02:38,549 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:02:38,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:02:38,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:02:38,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:02:38,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:02:38,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:02:38,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:02:38,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:02:38,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:02:38,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:02:38,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:02:38,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:02:38,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:02:38,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:02:38,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:02:38,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:02:38,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:02:38,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:02:38,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:02:38,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:02:38,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:02:38,552 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:02:38,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:02:38,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:02:38,553 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:02:38,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:02:38,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:02:38,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:02:38,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:02:38,870 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:02:38,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-25 05:02:38,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0aeb1700/fc16b695f2c54a4799880aedc6805c46/FLAG9c44ae1a7 [2021-03-25 05:02:39,474 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:02:39,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-25 05:02:39,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0aeb1700/fc16b695f2c54a4799880aedc6805c46/FLAG9c44ae1a7 [2021-03-25 05:02:39,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0aeb1700/fc16b695f2c54a4799880aedc6805c46 [2021-03-25 05:02:39,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:02:39,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:02:39,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:02:39,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:02:39,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:02:39,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:02:39" (1/1) ... [2021-03-25 05:02:39,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6177cd14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:39, skipping insertion in model container [2021-03-25 05:02:39,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:02:39" (1/1) ... [2021-03-25 05:02:39,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:02:39,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:02:40,102 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/safe014_pso.oepc.i[950,963] [2021-03-25 05:02:40,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:02:40,267 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:02:40,276 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/safe014_pso.oepc.i[950,963] [2021-03-25 05:02:40,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:02:40,356 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:02:40,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40 WrapperNode [2021-03-25 05:02:40,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:02:40,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:02:40,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:02:40,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:02:40,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:02:40,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:02:40,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:02:40,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:02:40,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:02:40,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:02:40,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:02:40,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:02:40,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:02:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:02:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:02:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:02:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:02:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:02:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:02:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:02:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:02:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:02:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:02:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:02:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:02:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:02:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:02:40,468 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:02:40,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:02:40,698 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:02:40,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:02:40 BoogieIcfgContainer [2021-03-25 05:02:40,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:02:40,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:02:40,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:02:40,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:02:40,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:02:39" (1/3) ... [2021-03-25 05:02:40,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb521e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:02:40, skipping insertion in model container [2021-03-25 05:02:40,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (2/3) ... [2021-03-25 05:02:40,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fb521e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:02:40, skipping insertion in model container [2021-03-25 05:02:40,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:02:40" (3/3) ... [2021-03-25 05:02:40,706 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-03-25 05:02:40,710 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:02:40,713 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:02:40,714 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:02:40,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,744 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,744 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,744 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,744 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,744 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,745 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,745 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,751 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,751 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,755 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,755 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:40,759 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:02:40,774 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:02:40,790 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:02:40,791 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:02:40,791 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:02:40,791 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:02:40,791 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:02:40,791 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:02:40,791 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:02:40,791 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:02:40,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:02:40,835 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 05:02:40,835 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:40,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:02:40,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:02:40,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:40,858 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:40,866 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:40,869 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:40,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:40,883 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 05:02:40,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:40,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:02:40,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:02:42,282 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-25 05:02:42,283 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 05:02:42,285 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1428 [2021-03-25 05:02:42,293 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:02:42,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:42,293 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:42,294 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:42,294 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:42,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:42,298 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-25 05:02:42,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:42,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444633191] [2021-03-25 05:02:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:42,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:42,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:42,499 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:42,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:42,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:42,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:42,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444633191] [2021-03-25 05:02:42,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:42,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:42,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595423557] [2021-03-25 05:02:42,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:42,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:42,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:42,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:42,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-25 05:02:42,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:42,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:42,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-25 05:02:42,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:42,668 INFO L129 PetriNetUnfolder]: 78/208 cut-off events. [2021-03-25 05:02:42,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:42,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 208 events. 78/208 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1017 event pairs, 4 based on Foata normal form. 23/218 useless extension candidates. Maximal degree in co-relation 358. Up to 58 conditions per place. [2021-03-25 05:02:42,672 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 6 changer transitions 15/45 dead transitions. [2021-03-25 05:02:42,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 165 flow [2021-03-25 05:02:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-25 05:02:42,690 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7598522167487685 [2021-03-25 05:02:42,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-25 05:02:42,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-25 05:02:42,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:42,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-25 05:02:42,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:42,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:42,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:42,710 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 617 transitions. [2021-03-25 05:02:42,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 165 flow [2021-03-25 05:02:42,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:02:42,714 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-25 05:02:42,716 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-25 05:02:42,717 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 05:02:42,717 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:42,717 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-25 05:02:42,718 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-25 05:02:42,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 25 transitions, 106 flow [2021-03-25 05:02:42,739 INFO L129 PetriNetUnfolder]: 36/118 cut-off events. [2021-03-25 05:02:42,739 INFO L130 PetriNetUnfolder]: For 79/88 co-relation queries the response was YES. [2021-03-25 05:02:42,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 118 events. 36/118 cut-off events. For 79/88 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 512 event pairs, 11 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 289. Up to 42 conditions per place. [2021-03-25 05:02:42,742 INFO L142 LiptonReduction]: Number of co-enabled transitions 154 [2021-03-25 05:02:43,149 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:02:43,399 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:02:43,478 INFO L154 LiptonReduction]: Checked pairs total: 78 [2021-03-25 05:02:43,478 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:02:43,478 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 761 [2021-03-25 05:02:43,479 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 100 flow [2021-03-25 05:02:43,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,480 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:43,480 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:43,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:02:43,480 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:43,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1039221852, now seen corresponding path program 1 times [2021-03-25 05:02:43,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:43,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759340534] [2021-03-25 05:02:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:43,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:43,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:43,571 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:43,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:43,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:43,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759340534] [2021-03-25 05:02:43,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:43,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:43,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518471208] [2021-03-25 05:02:43,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:43,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:43,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:43,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:43,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 05:02:43,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:43,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 05:02:43,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:43,648 INFO L129 PetriNetUnfolder]: 39/130 cut-off events. [2021-03-25 05:02:43,649 INFO L130 PetriNetUnfolder]: For 214/284 co-relation queries the response was YES. [2021-03-25 05:02:43,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 130 events. 39/130 cut-off events. For 214/284 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 569 event pairs, 1 based on Foata normal form. 14/139 useless extension candidates. Maximal degree in co-relation 413. Up to 48 conditions per place. [2021-03-25 05:02:43,652 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 11 selfloop transitions, 10 changer transitions 11/42 dead transitions. [2021-03-25 05:02:43,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 286 flow [2021-03-25 05:02:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:43,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-25 05:02:43,654 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7406962785114045 [2021-03-25 05:02:43,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-25 05:02:43,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-25 05:02:43,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:43,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-25 05:02:43,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,659 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,659 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 100 flow. Second operand 7 states and 617 transitions. [2021-03-25 05:02:43,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 286 flow [2021-03-25 05:02:43,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 278 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 05:02:43,663 INFO L241 Difference]: Finished difference. Result has 44 places, 27 transitions, 185 flow [2021-03-25 05:02:43,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2021-03-25 05:02:43,663 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-25 05:02:43,664 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:43,664 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 27 transitions, 185 flow [2021-03-25 05:02:43,665 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 27 transitions, 185 flow [2021-03-25 05:02:43,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 27 transitions, 185 flow [2021-03-25 05:02:43,676 INFO L129 PetriNetUnfolder]: 30/101 cut-off events. [2021-03-25 05:02:43,677 INFO L130 PetriNetUnfolder]: For 225/248 co-relation queries the response was YES. [2021-03-25 05:02:43,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 101 events. 30/101 cut-off events. For 225/248 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 416 event pairs, 4 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 350. Up to 40 conditions per place. [2021-03-25 05:02:43,678 INFO L142 LiptonReduction]: Number of co-enabled transitions 174 [2021-03-25 05:02:43,681 INFO L154 LiptonReduction]: Checked pairs total: 90 [2021-03-25 05:02:43,681 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:43,681 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 05:02:43,682 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 185 flow [2021-03-25 05:02:43,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:43,683 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:43,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:02:43,683 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:43,684 INFO L82 PathProgramCache]: Analyzing trace with hash 595453726, now seen corresponding path program 1 times [2021-03-25 05:02:43,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:43,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143652767] [2021-03-25 05:02:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:43,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:43,763 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:43,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:43,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:43,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143652767] [2021-03-25 05:02:43,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:43,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:43,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548979944] [2021-03-25 05:02:43,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:43,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:43,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:43,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:43,785 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 05:02:43,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:43,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 05:02:43,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:43,839 INFO L129 PetriNetUnfolder]: 29/111 cut-off events. [2021-03-25 05:02:43,839 INFO L130 PetriNetUnfolder]: For 379/509 co-relation queries the response was YES. [2021-03-25 05:02:43,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 111 events. 29/111 cut-off events. For 379/509 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 473 event pairs, 0 based on Foata normal form. 11/120 useless extension candidates. Maximal degree in co-relation 446. Up to 40 conditions per place. [2021-03-25 05:02:43,840 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 14 selfloop transitions, 14 changer transitions 6/44 dead transitions. [2021-03-25 05:02:43,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 406 flow [2021-03-25 05:02:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2021-03-25 05:02:43,842 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7358943577430972 [2021-03-25 05:02:43,842 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2021-03-25 05:02:43,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2021-03-25 05:02:43,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:43,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2021-03-25 05:02:43,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,846 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,846 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 185 flow. Second operand 7 states and 613 transitions. [2021-03-25 05:02:43,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 406 flow [2021-03-25 05:02:43,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 384 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-25 05:02:43,852 INFO L241 Difference]: Finished difference. Result has 50 places, 34 transitions, 316 flow [2021-03-25 05:02:43,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2021-03-25 05:02:43,852 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2021-03-25 05:02:43,853 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:43,853 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 34 transitions, 316 flow [2021-03-25 05:02:43,853 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 34 transitions, 316 flow [2021-03-25 05:02:43,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 34 transitions, 316 flow [2021-03-25 05:02:43,860 INFO L129 PetriNetUnfolder]: 24/86 cut-off events. [2021-03-25 05:02:43,861 INFO L130 PetriNetUnfolder]: For 272/323 co-relation queries the response was YES. [2021-03-25 05:02:43,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 86 events. 24/86 cut-off events. For 272/323 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 341 event pairs, 2 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 367. Up to 34 conditions per place. [2021-03-25 05:02:43,862 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-25 05:02:43,867 INFO L154 LiptonReduction]: Checked pairs total: 189 [2021-03-25 05:02:43,867 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:43,868 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-25 05:02:43,872 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 316 flow [2021-03-25 05:02:43,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,872 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:43,872 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:43,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:02:43,873 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:43,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1709419105, now seen corresponding path program 1 times [2021-03-25 05:02:43,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:43,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371010242] [2021-03-25 05:02:43,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:43,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:43,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:43,937 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:43,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:43,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:43,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371010242] [2021-03-25 05:02:43,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:43,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:43,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268633848] [2021-03-25 05:02:43,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:02:43,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:02:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:02:43,957 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 119 [2021-03-25 05:02:43,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:43,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 119 [2021-03-25 05:02:43,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:44,019 INFO L129 PetriNetUnfolder]: 56/164 cut-off events. [2021-03-25 05:02:44,019 INFO L130 PetriNetUnfolder]: For 906/1096 co-relation queries the response was YES. [2021-03-25 05:02:44,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 164 events. 56/164 cut-off events. For 906/1096 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 724 event pairs, 4 based on Foata normal form. 13/174 useless extension candidates. Maximal degree in co-relation 801. Up to 52 conditions per place. [2021-03-25 05:02:44,021 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 16 selfloop transitions, 8 changer transitions 29/62 dead transitions. [2021-03-25 05:02:44,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 745 flow [2021-03-25 05:02:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2021-03-25 05:02:44,023 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.723889555822329 [2021-03-25 05:02:44,023 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2021-03-25 05:02:44,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2021-03-25 05:02:44,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:44,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2021-03-25 05:02:44,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,027 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,027 INFO L185 Difference]: Start difference. First operand has 47 places, 34 transitions, 316 flow. Second operand 7 states and 603 transitions. [2021-03-25 05:02:44,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 745 flow [2021-03-25 05:02:44,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 703 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-25 05:02:44,032 INFO L241 Difference]: Finished difference. Result has 52 places, 27 transitions, 239 flow [2021-03-25 05:02:44,032 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=52, PETRI_TRANSITIONS=27} [2021-03-25 05:02:44,033 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2021-03-25 05:02:44,033 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:44,033 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 27 transitions, 239 flow [2021-03-25 05:02:44,033 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 27 transitions, 239 flow [2021-03-25 05:02:44,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 27 transitions, 239 flow [2021-03-25 05:02:44,043 INFO L129 PetriNetUnfolder]: 10/56 cut-off events. [2021-03-25 05:02:44,043 INFO L130 PetriNetUnfolder]: For 200/208 co-relation queries the response was YES. [2021-03-25 05:02:44,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 56 events. 10/56 cut-off events. For 200/208 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 162 event pairs, 3 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 236. Up to 17 conditions per place. [2021-03-25 05:02:44,044 INFO L142 LiptonReduction]: Number of co-enabled transitions 110 [2021-03-25 05:02:44,088 INFO L154 LiptonReduction]: Checked pairs total: 121 [2021-03-25 05:02:44,088 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:02:44,088 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-03-25 05:02:44,088 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 26 transitions, 241 flow [2021-03-25 05:02:44,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,089 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:44,089 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:44,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:02:44,089 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:44,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1748794311, now seen corresponding path program 1 times [2021-03-25 05:02:44,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:44,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230966093] [2021-03-25 05:02:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:44,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:44,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,153 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:44,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:44,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:44,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230966093] [2021-03-25 05:02:44,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:44,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:44,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341793316] [2021-03-25 05:02:44,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:44,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:44,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:44,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:44,175 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2021-03-25 05:02:44,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 26 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:44,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2021-03-25 05:02:44,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:44,238 INFO L129 PetriNetUnfolder]: 8/54 cut-off events. [2021-03-25 05:02:44,239 INFO L130 PetriNetUnfolder]: For 266/279 co-relation queries the response was YES. [2021-03-25 05:02:44,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 54 events. 8/54 cut-off events. For 266/279 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 0 based on Foata normal form. 8/62 useless extension candidates. Maximal degree in co-relation 277. Up to 16 conditions per place. [2021-03-25 05:02:44,239 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 10 selfloop transitions, 11 changer transitions 5/35 dead transitions. [2021-03-25 05:02:44,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 35 transitions, 414 flow [2021-03-25 05:02:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2021-03-25 05:02:44,242 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.71900826446281 [2021-03-25 05:02:44,242 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2021-03-25 05:02:44,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2021-03-25 05:02:44,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:44,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2021-03-25 05:02:44,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 121.0) internal successors, (968), 8 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,246 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 121.0) internal successors, (968), 8 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,247 INFO L185 Difference]: Start difference. First operand has 49 places, 26 transitions, 241 flow. Second operand 7 states and 609 transitions. [2021-03-25 05:02:44,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 35 transitions, 414 flow [2021-03-25 05:02:44,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 346 flow, removed 13 selfloop flow, removed 10 redundant places. [2021-03-25 05:02:44,250 INFO L241 Difference]: Finished difference. Result has 51 places, 28 transitions, 279 flow [2021-03-25 05:02:44,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=51, PETRI_TRANSITIONS=28} [2021-03-25 05:02:44,251 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-25 05:02:44,251 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:44,251 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 28 transitions, 279 flow [2021-03-25 05:02:44,251 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 28 transitions, 279 flow [2021-03-25 05:02:44,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 28 transitions, 279 flow [2021-03-25 05:02:44,257 INFO L129 PetriNetUnfolder]: 7/43 cut-off events. [2021-03-25 05:02:44,257 INFO L130 PetriNetUnfolder]: For 168/178 co-relation queries the response was YES. [2021-03-25 05:02:44,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 43 events. 7/43 cut-off events. For 168/178 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 114 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 196. Up to 14 conditions per place. [2021-03-25 05:02:44,257 INFO L142 LiptonReduction]: Number of co-enabled transitions 104 [2021-03-25 05:02:44,319 INFO L154 LiptonReduction]: Checked pairs total: 152 [2021-03-25 05:02:44,319 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:02:44,319 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 68 [2021-03-25 05:02:44,321 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 277 flow [2021-03-25 05:02:44,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,322 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:44,322 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:44,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:02:44,322 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:44,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:44,322 INFO L82 PathProgramCache]: Analyzing trace with hash -735160330, now seen corresponding path program 1 times [2021-03-25 05:02:44,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:44,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707635784] [2021-03-25 05:02:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:44,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:44,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707635784] [2021-03-25 05:02:44,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:44,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:44,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939813280] [2021-03-25 05:02:44,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:02:44,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:44,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:02:44,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:02:44,377 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-25 05:02:44,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:44,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-25 05:02:44,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:44,419 INFO L129 PetriNetUnfolder]: 58/140 cut-off events. [2021-03-25 05:02:44,419 INFO L130 PetriNetUnfolder]: For 1118/1171 co-relation queries the response was YES. [2021-03-25 05:02:44,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 140 events. 58/140 cut-off events. For 1118/1171 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 594 event pairs, 21 based on Foata normal form. 16/148 useless extension candidates. Maximal degree in co-relation 483. Up to 85 conditions per place. [2021-03-25 05:02:44,421 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 6 changer transitions 5/37 dead transitions. [2021-03-25 05:02:44,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 329 flow [2021-03-25 05:02:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:02:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:02:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2021-03-25 05:02:44,423 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.759016393442623 [2021-03-25 05:02:44,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2021-03-25 05:02:44,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2021-03-25 05:02:44,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:44,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2021-03-25 05:02:44,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,425 INFO L185 Difference]: Start difference. First operand has 47 places, 27 transitions, 277 flow. Second operand 5 states and 463 transitions. [2021-03-25 05:02:44,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 329 flow [2021-03-25 05:02:44,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 304 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-25 05:02:44,429 INFO L241 Difference]: Finished difference. Result has 49 places, 32 transitions, 298 flow [2021-03-25 05:02:44,430 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2021-03-25 05:02:44,430 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-25 05:02:44,430 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:44,430 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 32 transitions, 298 flow [2021-03-25 05:02:44,430 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 32 transitions, 298 flow [2021-03-25 05:02:44,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 32 transitions, 298 flow [2021-03-25 05:02:44,443 INFO L129 PetriNetUnfolder]: 39/119 cut-off events. [2021-03-25 05:02:44,443 INFO L130 PetriNetUnfolder]: For 348/375 co-relation queries the response was YES. [2021-03-25 05:02:44,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 119 events. 39/119 cut-off events. For 348/375 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 571 event pairs, 22 based on Foata normal form. 2/115 useless extension candidates. Maximal degree in co-relation 449. Up to 73 conditions per place. [2021-03-25 05:02:44,445 INFO L142 LiptonReduction]: Number of co-enabled transitions 152 [2021-03-25 05:02:44,447 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:02:44,447 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:44,447 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 05:02:44,448 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 298 flow [2021-03-25 05:02:44,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,449 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:44,449 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:44,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:02:44,449 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:44,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:44,449 INFO L82 PathProgramCache]: Analyzing trace with hash -735162295, now seen corresponding path program 1 times [2021-03-25 05:02:44,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:44,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056122178] [2021-03-25 05:02:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:44,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:44,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056122178] [2021-03-25 05:02:44,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:44,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:44,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231135012] [2021-03-25 05:02:44,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:44,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:44,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:44,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:44,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-25 05:02:44,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:44,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-25 05:02:44,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:44,552 INFO L129 PetriNetUnfolder]: 38/113 cut-off events. [2021-03-25 05:02:44,552 INFO L130 PetriNetUnfolder]: For 510/653 co-relation queries the response was YES. [2021-03-25 05:02:44,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 113 events. 38/113 cut-off events. For 510/653 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 481 event pairs, 3 based on Foata normal form. 41/148 useless extension candidates. Maximal degree in co-relation 482. Up to 63 conditions per place. [2021-03-25 05:02:44,553 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 10 changer transitions 6/42 dead transitions. [2021-03-25 05:02:44,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 392 flow [2021-03-25 05:02:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:44,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 646 transitions. [2021-03-25 05:02:44,555 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7564402810304449 [2021-03-25 05:02:44,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 646 transitions. [2021-03-25 05:02:44,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 646 transitions. [2021-03-25 05:02:44,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:44,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 646 transitions. [2021-03-25 05:02:44,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.28571428571429) internal successors, (646), 7 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,559 INFO L185 Difference]: Start difference. First operand has 49 places, 32 transitions, 298 flow. Second operand 7 states and 646 transitions. [2021-03-25 05:02:44,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 392 flow [2021-03-25 05:02:44,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:02:44,562 INFO L241 Difference]: Finished difference. Result has 58 places, 36 transitions, 365 flow [2021-03-25 05:02:44,562 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=365, PETRI_PLACES=58, PETRI_TRANSITIONS=36} [2021-03-25 05:02:44,562 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-25 05:02:44,563 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:44,563 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 36 transitions, 365 flow [2021-03-25 05:02:44,563 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 36 transitions, 365 flow [2021-03-25 05:02:44,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 36 transitions, 365 flow [2021-03-25 05:02:44,575 INFO L129 PetriNetUnfolder]: 27/92 cut-off events. [2021-03-25 05:02:44,576 INFO L130 PetriNetUnfolder]: For 446/502 co-relation queries the response was YES. [2021-03-25 05:02:44,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 92 events. 27/92 cut-off events. For 446/502 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 359 event pairs, 3 based on Foata normal form. 7/97 useless extension candidates. Maximal degree in co-relation 444. Up to 48 conditions per place. [2021-03-25 05:02:44,577 INFO L142 LiptonReduction]: Number of co-enabled transitions 152 [2021-03-25 05:02:44,583 INFO L154 LiptonReduction]: Checked pairs total: 29 [2021-03-25 05:02:44,583 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:02:44,583 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-25 05:02:44,586 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 349 flow [2021-03-25 05:02:44,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,586 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:44,586 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:44,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:02:44,587 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:44,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1611303560, now seen corresponding path program 1 times [2021-03-25 05:02:44,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:44,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087148285] [2021-03-25 05:02:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:44,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:44,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087148285] [2021-03-25 05:02:44,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:44,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:44,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969447929] [2021-03-25 05:02:44,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:02:44,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:44,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:02:44,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:02:44,649 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-25 05:02:44,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:44,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-25 05:02:44,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:44,703 INFO L129 PetriNetUnfolder]: 21/67 cut-off events. [2021-03-25 05:02:44,704 INFO L130 PetriNetUnfolder]: For 417/473 co-relation queries the response was YES. [2021-03-25 05:02:44,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 67 events. 21/67 cut-off events. For 417/473 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 182 event pairs, 0 based on Foata normal form. 23/88 useless extension candidates. Maximal degree in co-relation 357. Up to 33 conditions per place. [2021-03-25 05:02:44,704 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 2 selfloop transitions, 10 changer transitions 9/37 dead transitions. [2021-03-25 05:02:44,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 37 transitions, 406 flow [2021-03-25 05:02:44,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 641 transitions. [2021-03-25 05:02:44,707 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7505854800936768 [2021-03-25 05:02:44,707 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 641 transitions. [2021-03-25 05:02:44,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 641 transitions. [2021-03-25 05:02:44,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:44,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 641 transitions. [2021-03-25 05:02:44,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.57142857142857) internal successors, (641), 7 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,710 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,710 INFO L185 Difference]: Start difference. First operand has 57 places, 34 transitions, 349 flow. Second operand 7 states and 641 transitions. [2021-03-25 05:02:44,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 37 transitions, 406 flow [2021-03-25 05:02:44,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 37 transitions, 372 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-25 05:02:44,714 INFO L241 Difference]: Finished difference. Result has 58 places, 28 transitions, 278 flow [2021-03-25 05:02:44,714 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=58, PETRI_TRANSITIONS=28} [2021-03-25 05:02:44,714 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-25 05:02:44,714 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:44,715 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 28 transitions, 278 flow [2021-03-25 05:02:44,715 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 28 transitions, 278 flow [2021-03-25 05:02:44,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 28 transitions, 278 flow [2021-03-25 05:02:44,719 INFO L129 PetriNetUnfolder]: 10/41 cut-off events. [2021-03-25 05:02:44,719 INFO L130 PetriNetUnfolder]: For 128/130 co-relation queries the response was YES. [2021-03-25 05:02:44,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 41 events. 10/41 cut-off events. For 128/130 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 93 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 189. Up to 15 conditions per place. [2021-03-25 05:02:44,720 INFO L142 LiptonReduction]: Number of co-enabled transitions 34 [2021-03-25 05:02:44,814 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-25 05:02:44,815 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:02:44,815 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 101 [2021-03-25 05:02:44,815 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 27 transitions, 291 flow [2021-03-25 05:02:44,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,816 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:44,816 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:44,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:02:44,816 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2030725203, now seen corresponding path program 1 times [2021-03-25 05:02:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:44,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490158052] [2021-03-25 05:02:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:44,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,862 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:44,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:44,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490158052] [2021-03-25 05:02:44,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:44,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:44,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896489898] [2021-03-25 05:02:44,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:44,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:44,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:44,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:44,874 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2021-03-25 05:02:44,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 27 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:44,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2021-03-25 05:02:44,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:44,905 INFO L129 PetriNetUnfolder]: 13/50 cut-off events. [2021-03-25 05:02:44,905 INFO L130 PetriNetUnfolder]: For 317/328 co-relation queries the response was YES. [2021-03-25 05:02:44,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 50 events. 13/50 cut-off events. For 317/328 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 133 event pairs, 0 based on Foata normal form. 6/54 useless extension candidates. Maximal degree in co-relation 282. Up to 22 conditions per place. [2021-03-25 05:02:44,906 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 2 selfloop transitions, 6 changer transitions 10/31 dead transitions. [2021-03-25 05:02:44,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 31 transitions, 393 flow [2021-03-25 05:02:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:02:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:02:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2021-03-25 05:02:44,907 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7354838709677419 [2021-03-25 05:02:44,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2021-03-25 05:02:44,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2021-03-25 05:02:44,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:44,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2021-03-25 05:02:44,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,910 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,910 INFO L185 Difference]: Start difference. First operand has 55 places, 27 transitions, 291 flow. Second operand 5 states and 456 transitions. [2021-03-25 05:02:44,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 31 transitions, 393 flow [2021-03-25 05:02:44,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 31 transitions, 308 flow, removed 16 selfloop flow, removed 12 redundant places. [2021-03-25 05:02:44,915 INFO L241 Difference]: Finished difference. Result has 48 places, 21 transitions, 172 flow [2021-03-25 05:02:44,915 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=48, PETRI_TRANSITIONS=21} [2021-03-25 05:02:44,915 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-25 05:02:44,915 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:44,915 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 21 transitions, 172 flow [2021-03-25 05:02:44,915 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 21 transitions, 172 flow [2021-03-25 05:02:44,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 21 transitions, 172 flow [2021-03-25 05:02:44,918 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-25 05:02:44,919 INFO L130 PetriNetUnfolder]: For 58/59 co-relation queries the response was YES. [2021-03-25 05:02:44,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 24 events. 5/24 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 88. Up to 8 conditions per place. [2021-03-25 05:02:44,919 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-25 05:02:45,012 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-25 05:02:45,012 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:02:45,012 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-03-25 05:02:45,013 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 19 transitions, 185 flow [2021-03-25 05:02:45,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,013 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:45,013 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:45,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:02:45,013 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:45,014 INFO L82 PathProgramCache]: Analyzing trace with hash 660186943, now seen corresponding path program 1 times [2021-03-25 05:02:45,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:45,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592771096] [2021-03-25 05:02:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:45,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:45,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,041 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:45,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:45,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592771096] [2021-03-25 05:02:45,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:45,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:45,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583897870] [2021-03-25 05:02:45,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:45,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:45,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:45,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:45,052 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 128 [2021-03-25 05:02:45,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 19 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:45,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 128 [2021-03-25 05:02:45,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:45,073 INFO L129 PetriNetUnfolder]: 5/22 cut-off events. [2021-03-25 05:02:45,074 INFO L130 PetriNetUnfolder]: For 155/157 co-relation queries the response was YES. [2021-03-25 05:02:45,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 22 events. 5/22 cut-off events. For 155/157 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 3/25 useless extension candidates. Maximal degree in co-relation 112. Up to 7 conditions per place. [2021-03-25 05:02:45,074 INFO L132 encePairwiseOnDemand]: 120/128 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-03-25 05:02:45,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 18 transitions, 183 flow [2021-03-25 05:02:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:02:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:02:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2021-03-25 05:02:45,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.69921875 [2021-03-25 05:02:45,076 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2021-03-25 05:02:45,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2021-03-25 05:02:45,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:45,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2021-03-25 05:02:45,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,079 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,079 INFO L185 Difference]: Start difference. First operand has 46 places, 19 transitions, 185 flow. Second operand 6 states and 537 transitions. [2021-03-25 05:02:45,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 18 transitions, 183 flow [2021-03-25 05:02:45,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 78 flow, removed 2 selfloop flow, removed 22 redundant places. [2021-03-25 05:02:45,080 INFO L241 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2021-03-25 05:02:45,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2021-03-25 05:02:45,081 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2021-03-25 05:02:45,081 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:45,081 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 0 transitions, 0 flow [2021-03-25 05:02:45,081 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 0 transitions, 0 flow [2021-03-25 05:02:45,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:02:45,082 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:02:45,082 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:45,082 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. [2021-03-25 05:02:45,082 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:02:45,082 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:02:45,082 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:45,082 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:02:45,083 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:02:45,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:02:45,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:02:45 BasicIcfg [2021-03-25 05:02:45,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:02:45,088 INFO L168 Benchmark]: Toolchain (without parser) took 5159.61 ms. Allocated memory was 255.9 MB in the beginning and 438.3 MB in the end (delta: 182.5 MB). Free memory was 236.7 MB in the beginning and 319.6 MB in the end (delta: -82.9 MB). Peak memory consumption was 99.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:45,088 INFO L168 Benchmark]: CDTParser took 5.15 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:02:45,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.45 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 236.7 MB in the beginning and 327.2 MB in the end (delta: -90.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:45,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.95 ms. Allocated memory is still 364.9 MB. Free memory was 327.2 MB in the beginning and 325.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:45,090 INFO L168 Benchmark]: Boogie Preprocessor took 17.93 ms. Allocated memory is still 364.9 MB. Free memory was 325.1 MB in the beginning and 323.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:45,090 INFO L168 Benchmark]: RCFGBuilder took 291.88 ms. Allocated memory is still 364.9 MB. Free memory was 323.7 MB in the beginning and 301.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:45,090 INFO L168 Benchmark]: TraceAbstraction took 4386.10 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 300.6 MB in the beginning and 319.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 56.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:45,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 5.15 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 427.45 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 236.7 MB in the beginning and 327.2 MB in the end (delta: -90.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.95 ms. Allocated memory is still 364.9 MB. Free memory was 327.2 MB in the beginning and 325.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.93 ms. Allocated memory is still 364.9 MB. Free memory was 325.1 MB in the beginning and 323.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 291.88 ms. Allocated memory is still 364.9 MB. Free memory was 323.7 MB in the beginning and 301.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4386.10 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 300.6 MB in the beginning and 319.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 56.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1413.9ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 680, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 680, positive: 209, positive conditional: 0, positive unconditional: 209, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 439, unknown conditional: 0, unknown unconditional: 439] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 760.6ms, 40 PlacesBefore, 34 PlacesAfterwards, 25 TransitionsBefore, 22 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 78 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.7ms, 44 PlacesBefore, 41 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 174 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.2ms, 50 PlacesBefore, 47 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 210 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 189 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 50, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.7ms, 52 PlacesBefore, 49 PlacesAfterwards, 27 TransitionsBefore, 26 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 121 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 29, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 67.5ms, 51 PlacesBefore, 47 PlacesAfterwards, 28 TransitionsBefore, 27 TransitionsAfterwards, 104 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 37, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.6ms, 49 PlacesBefore, 49 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 152 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , 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): 26, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.1ms, 58 PlacesBefore, 57 PlacesAfterwards, 36 TransitionsBefore, 34 TransitionsAfterwards, 152 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 29 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 29, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 99.7ms, 58 PlacesBefore, 55 PlacesAfterwards, 28 TransitionsBefore, 27 TransitionsAfterwards, 34 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 96.5ms, 48 PlacesBefore, 46 PlacesAfterwards, 21 TransitionsBefore, 19 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 28 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , 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): 6, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4296.9ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 735.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1497.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 78 SDtfs, 89 SDslu, 102 SDs, 0 SdLazy, 217 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 173.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 227.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=365occurred in iteration=7, InterpolantAutomatonStates: 65, 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: 24.7ms SsaConstructionTime, 173.9ms SatisfiabilityAnalysisTime, 514.3ms InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 679 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...