/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 14:51:32,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 14:51:32,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 14:51:32,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 14:51:32,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 14:51:32,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 14:51:32,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 14:51:32,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 14:51:32,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 14:51:32,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 14:51:32,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 14:51:32,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 14:51:32,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 14:51:32,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 14:51:32,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 14:51:32,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 14:51:32,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 14:51:32,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 14:51:32,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 14:51:32,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 14:51:32,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 14:51:32,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 14:51:32,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 14:51:32,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 14:51:32,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 14:51:32,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 14:51:32,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 14:51:32,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 14:51:32,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 14:51:32,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 14:51:32,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 14:51:32,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 14:51:32,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 14:51:32,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 14:51:32,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 14:51:32,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 14:51:32,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2021-03-25 14:51:32,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 14:51:32,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 14:51:32,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 14:51:32,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 14:51:32,421 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 14:51:32,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 14:51:32,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 14:51:32,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 14:51:32,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 14:51:32,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 14:51:32,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 14:51:32,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 14:51:32,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 14:51:32,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 14:51:32,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 14:51:32,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 14:51:32,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 14:51:32,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 14:51:32,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 14:51:32,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 14:51:32,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 14:51:32,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 14:51:32,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 14:51:32,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 14:51:32,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 14:51:32,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 14:51:32,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 14:51:32,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 14:51:32,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 14:51:32,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 14:51:32,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 14:51:32,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 14:51:32,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 14:51:32,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 14:51:32,747 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 14:51:32,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2021-03-25 14:51:32,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539603e9b/2e0436395c6044f0ab9253b029114e24/FLAG4d94ec75e [2021-03-25 14:51:33,275 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 14:51:33,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2021-03-25 14:51:33,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539603e9b/2e0436395c6044f0ab9253b029114e24/FLAG4d94ec75e [2021-03-25 14:51:33,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539603e9b/2e0436395c6044f0ab9253b029114e24 [2021-03-25 14:51:33,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 14:51:33,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 14:51:33,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 14:51:33,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 14:51:33,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 14:51:33,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7321f50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33, skipping insertion in model container [2021-03-25 14:51:33,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 14:51:33,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 14:51:33,560 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/safe009_pso.oepc.i[950,963] [2021-03-25 14:51:33,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 14:51:33,739 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 14:51:33,748 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/safe009_pso.oepc.i[950,963] [2021-03-25 14:51:33,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 14:51:33,828 INFO L208 MainTranslator]: Completed translation [2021-03-25 14:51:33,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33 WrapperNode [2021-03-25 14:51:33,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 14:51:33,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 14:51:33,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 14:51:33,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 14:51:33,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 14:51:33,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 14:51:33,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 14:51:33,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 14:51:33,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (1/1) ... [2021-03-25 14:51:33,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 14:51:33,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 14:51:33,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 14:51:33,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 14:51:33,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (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 14:51:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 14:51:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 14:51:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 14:51:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 14:51:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 14:51:33,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 14:51:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 14:51:33,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 14:51:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 14:51:33,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 14:51:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 14:51:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 14:51:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 14:51:33,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 14:51:33,951 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 14:51:34,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 14:51:34,227 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 14:51:34,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:51:34 BoogieIcfgContainer [2021-03-25 14:51:34,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 14:51:34,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 14:51:34,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 14:51:34,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 14:51:34,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 02:51:33" (1/3) ... [2021-03-25 14:51:34,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b83749e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:51:34, skipping insertion in model container [2021-03-25 14:51:34,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:51:33" (2/3) ... [2021-03-25 14:51:34,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b83749e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:51:34, skipping insertion in model container [2021-03-25 14:51:34,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:51:34" (3/3) ... [2021-03-25 14:51:34,233 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2021-03-25 14:51:34,247 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 14:51:34,249 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 14:51:34,250 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 14:51:34,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,290 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,291 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,291 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,291 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,294 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,302 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,305 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,306 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:51:34,308 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 14:51:34,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 14:51:34,345 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 14:51:34,345 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 14:51:34,345 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 14:51:34,345 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 14:51:34,345 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 14:51:34,345 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 14:51:34,345 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 14:51:34,345 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 14:51:34,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 14:51:34,395 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-25 14:51:34,395 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:51:34,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 14:51:34,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 14:51:34,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-25 14:51:34,405 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:34,418 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 14:51:34,422 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 14:51:34,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-25 14:51:34,447 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-25 14:51:34,447 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:51:34,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 14:51:34,450 INFO L142 LiptonReduction]: Number of co-enabled transitions 812 [2021-03-25 14:51:35,464 INFO L154 LiptonReduction]: Checked pairs total: 861 [2021-03-25 14:51:35,464 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 14:51:35,466 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1062 [2021-03-25 14:51:35,473 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 14:51:35,473 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:51:35,473 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:51:35,473 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:51:35,474 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:51:35,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:51:35,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1640288609, now seen corresponding path program 1 times [2021-03-25 14:51:35,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:51:35,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425096117] [2021-03-25 14:51:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:51:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:51:35,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:35,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:51:35,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:35,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:35,616 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 14:51:35,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425096117] [2021-03-25 14:51:35,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:51:35,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:51:35,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090552698] [2021-03-25 14:51:35,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 14:51:35,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:51:35,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 14:51:35,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 14:51:35,632 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 110 [2021-03-25 14:51:35,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 14:51:35,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:51:35,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 110 [2021-03-25 14:51:35,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:51:35,646 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 14:51:35,646 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:51:35,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 14:51:35,647 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 1 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2021-03-25 14:51:35,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 57 flow [2021-03-25 14:51:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 14:51:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 14:51:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-03-25 14:51:35,656 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9030303030303031 [2021-03-25 14:51:35,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-03-25 14:51:35,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-03-25 14:51:35,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:51:35,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-03-25 14:51:35,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 14:51:35,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:35,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:35,667 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 3 states and 298 transitions. [2021-03-25 14:51:35,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 57 flow [2021-03-25 14:51:35,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 54 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 14:51:35,670 INFO L241 Difference]: Finished difference. Result has 31 places, 21 transitions, 56 flow [2021-03-25 14:51:35,672 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, 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=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2021-03-25 14:51:35,672 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-25 14:51:35,673 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:35,673 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 21 transitions, 56 flow [2021-03-25 14:51:35,673 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 21 transitions, 56 flow [2021-03-25 14:51:35,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 56 flow [2021-03-25 14:51:35,676 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 14:51:35,676 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 14:51:35,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 0/21 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 14:51:35,676 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-25 14:51:36,072 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 14:51:36,254 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 14:51:36,330 INFO L154 LiptonReduction]: Checked pairs total: 351 [2021-03-25 14:51:36,330 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 14:51:36,331 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 658 [2021-03-25 14:51:36,331 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 46 flow [2021-03-25 14:51:36,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 14:51:36,332 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:51:36,332 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:51:36,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 14:51:36,332 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:51:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:51:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash 856204203, now seen corresponding path program 1 times [2021-03-25 14:51:36,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:51:36,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073079063] [2021-03-25 14:51:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:51:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:51:36,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:51:36,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:36,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:36,389 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 14:51:36,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073079063] [2021-03-25 14:51:36,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:51:36,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:51:36,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247176837] [2021-03-25 14:51:36,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:51:36,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:51:36,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:51:36,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:51:36,392 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 115 [2021-03-25 14:51:36,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 14:51:36,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:51:36,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 115 [2021-03-25 14:51:36,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:51:36,425 INFO L129 PetriNetUnfolder]: 6/41 cut-off events. [2021-03-25 14:51:36,425 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-03-25 14:51:36,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 41 events. 6/41 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 125 event pairs, 0 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 73. Up to 11 conditions per place. [2021-03-25 14:51:36,425 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 5 selfloop transitions, 4 changer transitions 1/21 dead transitions. [2021-03-25 14:51:36,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 79 flow [2021-03-25 14:51:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 14:51:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 14:51:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2021-03-25 14:51:36,432 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-03-25 14:51:36,432 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2021-03-25 14:51:36,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2021-03-25 14:51:36,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:51:36,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2021-03-25 14:51:36,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 14:51:36,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 14:51:36,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 14:51:36,436 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 46 flow. Second operand 4 states and 388 transitions. [2021-03-25 14:51:36,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 79 flow [2021-03-25 14:51:36,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 73 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 14:51:36,437 INFO L241 Difference]: Finished difference. Result has 29 places, 18 transitions, 68 flow [2021-03-25 14:51:36,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2021-03-25 14:51:36,438 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 14:51:36,438 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:36,438 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 18 transitions, 68 flow [2021-03-25 14:51:36,440 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 18 transitions, 68 flow [2021-03-25 14:51:36,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 18 transitions, 68 flow [2021-03-25 14:51:36,450 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-25 14:51:36,450 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 14:51:36,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 27 events. 3/27 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 1 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 52. Up to 10 conditions per place. [2021-03-25 14:51:36,452 INFO L142 LiptonReduction]: Number of co-enabled transitions 94 [2021-03-25 14:51:36,453 INFO L154 LiptonReduction]: Checked pairs total: 62 [2021-03-25 14:51:36,453 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:51:36,453 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-25 14:51:36,455 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 68 flow [2021-03-25 14:51:36,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 14:51:36,455 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:51:36,455 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:51:36,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 14:51:36,455 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:51:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:51:36,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2138330995, now seen corresponding path program 1 times [2021-03-25 14:51:36,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:51:36,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231186451] [2021-03-25 14:51:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:51:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:51:36,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:36,528 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 14:51:36,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231186451] [2021-03-25 14:51:36,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:51:36,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 14:51:36,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317544633] [2021-03-25 14:51:36,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 14:51:36,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:51:36,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 14:51:36,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 14:51:36,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 115 [2021-03-25 14:51:36,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 14:51:36,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:51:36,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 115 [2021-03-25 14:51:36,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:51:36,545 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-25 14:51:36,545 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-25 14:51:36,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 27 events. 3/27 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 56. Up to 10 conditions per place. [2021-03-25 14:51:36,546 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2021-03-25 14:51:36,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 18 transitions, 74 flow [2021-03-25 14:51:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 14:51:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 14:51:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-25 14:51:36,547 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.881159420289855 [2021-03-25 14:51:36,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-25 14:51:36,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-25 14:51:36,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:51:36,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-25 14:51:36,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 14:51:36,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 14:51:36,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 14:51:36,550 INFO L185 Difference]: Start difference. First operand has 29 places, 18 transitions, 68 flow. Second operand 3 states and 304 transitions. [2021-03-25 14:51:36,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 18 transitions, 74 flow [2021-03-25 14:51:36,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 65 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 14:51:36,551 INFO L241 Difference]: Finished difference. Result has 29 places, 18 transitions, 67 flow [2021-03-25 14:51:36,551 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2021-03-25 14:51:36,551 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 14:51:36,551 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:36,551 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 18 transitions, 67 flow [2021-03-25 14:51:36,551 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 18 transitions, 67 flow [2021-03-25 14:51:36,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 18 transitions, 67 flow [2021-03-25 14:51:36,554 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-25 14:51:36,555 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-25 14:51:36,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 27 events. 3/27 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 1 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2021-03-25 14:51:36,555 INFO L142 LiptonReduction]: Number of co-enabled transitions 92 [2021-03-25 14:51:36,556 INFO L154 LiptonReduction]: Checked pairs total: 51 [2021-03-25 14:51:36,556 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:51:36,556 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 14:51:36,557 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 67 flow [2021-03-25 14:51:36,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 14:51:36,557 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:51:36,558 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:51:36,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 14:51:36,558 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:51:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:51:36,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1774342301, now seen corresponding path program 1 times [2021-03-25 14:51:36,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:51:36,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470141721] [2021-03-25 14:51:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:51:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:51:36,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:51:36,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:36,615 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 14:51:36,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470141721] [2021-03-25 14:51:36,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:51:36,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:51:36,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336381438] [2021-03-25 14:51:36,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 14:51:36,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:51:36,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 14:51:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 14:51:36,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 115 [2021-03-25 14:51:36,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 14:51:36,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:51:36,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 115 [2021-03-25 14:51:36,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:51:36,635 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2021-03-25 14:51:36,636 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 14:51:36,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 33 events. 2/33 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 69. Up to 10 conditions per place. [2021-03-25 14:51:36,636 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 5 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-25 14:51:36,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 86 flow [2021-03-25 14:51:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 14:51:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 14:51:36,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2021-03-25 14:51:36,638 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8753623188405797 [2021-03-25 14:51:36,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2021-03-25 14:51:36,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2021-03-25 14:51:36,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:51:36,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2021-03-25 14:51:36,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 14:51:36,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 14:51:36,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 14:51:36,640 INFO L185 Difference]: Start difference. First operand has 29 places, 18 transitions, 67 flow. Second operand 3 states and 302 transitions. [2021-03-25 14:51:36,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 86 flow [2021-03-25 14:51:36,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 14:51:36,641 INFO L241 Difference]: Finished difference. Result has 30 places, 18 transitions, 74 flow [2021-03-25 14:51:36,641 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2021-03-25 14:51:36,641 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2021-03-25 14:51:36,641 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:36,643 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 18 transitions, 74 flow [2021-03-25 14:51:36,643 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 18 transitions, 74 flow [2021-03-25 14:51:36,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 18 transitions, 74 flow [2021-03-25 14:51:36,646 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-25 14:51:36,647 INFO L130 PetriNetUnfolder]: For 17/18 co-relation queries the response was YES. [2021-03-25 14:51:36,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 26 events. 0/26 cut-off events. For 17/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 14:51:36,647 INFO L142 LiptonReduction]: Number of co-enabled transitions 92 [2021-03-25 14:51:36,648 INFO L154 LiptonReduction]: Checked pairs total: 79 [2021-03-25 14:51:36,648 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:51:36,648 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 14:51:36,654 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 74 flow [2021-03-25 14:51:36,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 14:51:36,654 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:51:36,654 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:51:36,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 14:51:36,654 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:51:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:51:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1176659768, now seen corresponding path program 1 times [2021-03-25 14:51:36,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:51:36,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103094124] [2021-03-25 14:51:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:51:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:51:36,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:36,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:36,725 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:51:36,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:51:36,742 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 14:51:36,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103094124] [2021-03-25 14:51:36,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:51:36,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:51:36,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009815258] [2021-03-25 14:51:36,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 14:51:36,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:51:36,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 14:51:36,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 14:51:36,744 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 115 [2021-03-25 14:51:36,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 14:51:36,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:51:36,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 115 [2021-03-25 14:51:36,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:51:36,765 INFO L129 PetriNetUnfolder]: 6/45 cut-off events. [2021-03-25 14:51:36,766 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-03-25 14:51:36,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 45 events. 6/45 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 138 event pairs, 4 based on Foata normal form. 4/48 useless extension candidates. Maximal degree in co-relation 112. Up to 16 conditions per place. [2021-03-25 14:51:36,766 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 3 selfloop transitions, 4 changer transitions 6/22 dead transitions. [2021-03-25 14:51:36,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 124 flow [2021-03-25 14:51:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:51:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:51:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-25 14:51:36,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878260869565218 [2021-03-25 14:51:36,769 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-25 14:51:36,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-25 14:51:36,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:51:36,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-25 14:51:36,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 14:51:36,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:36,771 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:36,772 INFO L185 Difference]: Start difference. First operand has 30 places, 18 transitions, 74 flow. Second operand 5 states and 453 transitions. [2021-03-25 14:51:36,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 124 flow [2021-03-25 14:51:36,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 114 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 14:51:36,773 INFO L241 Difference]: Finished difference. Result has 35 places, 16 transitions, 74 flow [2021-03-25 14:51:36,773 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=16} [2021-03-25 14:51:36,773 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-25 14:51:36,773 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:36,773 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 16 transitions, 74 flow [2021-03-25 14:51:36,774 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 16 transitions, 74 flow [2021-03-25 14:51:36,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 16 transitions, 74 flow [2021-03-25 14:51:36,776 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 14:51:36,776 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-25 14:51:36,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 18 events. 0/18 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 14:51:36,776 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-25 14:51:36,817 INFO L154 LiptonReduction]: Checked pairs total: 44 [2021-03-25 14:51:36,817 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 14:51:36,818 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-25 14:51:36,819 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 14 transitions, 70 flow [2021-03-25 14:51:36,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 14:51:36,819 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:51:36,820 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:51:36,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 14:51:36,820 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:51:36,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:51:36,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1166805130, now seen corresponding path program 1 times [2021-03-25 14:51:36,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:51:36,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152088383] [2021-03-25 14:51:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:51:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:51:36,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:36,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:36,890 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 14:51:36,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 14:51:36,896 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 14:51:36,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152088383] [2021-03-25 14:51:36,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:51:36,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:51:36,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293037466] [2021-03-25 14:51:36,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:51:36,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:51:36,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:51:36,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:51:36,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 117 [2021-03-25 14:51:36,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 14 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 14:51:36,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:51:36,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 117 [2021-03-25 14:51:36,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:51:36,938 INFO L129 PetriNetUnfolder]: 23/60 cut-off events. [2021-03-25 14:51:36,939 INFO L130 PetriNetUnfolder]: For 193/202 co-relation queries the response was YES. [2021-03-25 14:51:36,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 60 events. 23/60 cut-off events. For 193/202 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 180 event pairs, 9 based on Foata normal form. 5/63 useless extension candidates. Maximal degree in co-relation 181. Up to 39 conditions per place. [2021-03-25 14:51:36,940 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 3 changer transitions 8/24 dead transitions. [2021-03-25 14:51:36,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 140 flow [2021-03-25 14:51:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:51:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:51:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2021-03-25 14:51:36,942 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7829059829059829 [2021-03-25 14:51:36,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2021-03-25 14:51:36,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2021-03-25 14:51:36,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:51:36,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2021-03-25 14:51:36,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 14:51:36,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:36,945 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:36,946 INFO L185 Difference]: Start difference. First operand has 33 places, 14 transitions, 70 flow. Second operand 5 states and 458 transitions. [2021-03-25 14:51:36,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 140 flow [2021-03-25 14:51:36,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 116 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-25 14:51:36,949 INFO L241 Difference]: Finished difference. Result has 33 places, 16 transitions, 80 flow [2021-03-25 14:51:36,949 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2021-03-25 14:51:36,949 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2021-03-25 14:51:36,949 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:36,949 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 16 transitions, 80 flow [2021-03-25 14:51:36,950 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 16 transitions, 80 flow [2021-03-25 14:51:36,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 16 transitions, 80 flow [2021-03-25 14:51:36,956 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-03-25 14:51:36,956 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2021-03-25 14:51:36,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 41 events. 14/41 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 93 event pairs, 8 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 140. Up to 30 conditions per place. [2021-03-25 14:51:36,957 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 14:51:36,987 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 14:51:36,987 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 14:51:36,987 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 14:51:36,988 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 82 flow [2021-03-25 14:51:36,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 14:51:36,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:51:36,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:51:36,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 14:51:36,989 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:51:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:51:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1197041073, now seen corresponding path program 1 times [2021-03-25 14:51:36,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:51:36,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885665146] [2021-03-25 14:51:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:51:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:51:37,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:37,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:37,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:37,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:37,051 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 14:51:37,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 14:51:37,057 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 14:51:37,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885665146] [2021-03-25 14:51:37,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:51:37,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:51:37,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063181689] [2021-03-25 14:51:37,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 14:51:37,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:51:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 14:51:37,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 14:51:37,060 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-03-25 14:51:37,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:37,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:51:37,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-03-25 14:51:37,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:51:37,115 INFO L129 PetriNetUnfolder]: 9/38 cut-off events. [2021-03-25 14:51:37,116 INFO L130 PetriNetUnfolder]: For 103/106 co-relation queries the response was YES. [2021-03-25 14:51:37,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 38 events. 9/38 cut-off events. For 103/106 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 85 event pairs, 1 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 149. Up to 27 conditions per place. [2021-03-25 14:51:37,116 INFO L132 encePairwiseOnDemand]: 111/118 looper letters, 3 selfloop transitions, 5 changer transitions 10/26 dead transitions. [2021-03-25 14:51:37,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 191 flow [2021-03-25 14:51:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 14:51:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 14:51:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2021-03-25 14:51:37,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7740112994350282 [2021-03-25 14:51:37,118 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2021-03-25 14:51:37,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2021-03-25 14:51:37,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:51:37,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2021-03-25 14:51:37,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 14:51:37,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states 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 14:51:37,120 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states 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 14:51:37,121 INFO L185 Difference]: Start difference. First operand has 31 places, 16 transitions, 82 flow. Second operand 6 states and 548 transitions. [2021-03-25 14:51:37,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 191 flow [2021-03-25 14:51:37,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 14:51:37,123 INFO L241 Difference]: Finished difference. Result has 37 places, 16 transitions, 101 flow [2021-03-25 14:51:37,123 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=37, PETRI_TRANSITIONS=16} [2021-03-25 14:51:37,124 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2021-03-25 14:51:37,124 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:37,124 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 16 transitions, 101 flow [2021-03-25 14:51:37,124 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 16 transitions, 101 flow [2021-03-25 14:51:37,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 16 transitions, 101 flow [2021-03-25 14:51:37,127 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 14:51:37,127 INFO L130 PetriNetUnfolder]: For 59/62 co-relation queries the response was YES. [2021-03-25 14:51:37,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 21 events. 2/21 cut-off events. For 59/62 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 73. Up to 10 conditions per place. [2021-03-25 14:51:37,128 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 14:51:37,225 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 14:51:37,225 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 14:51:37,225 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 101 [2021-03-25 14:51:37,230 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 15 transitions, 100 flow [2021-03-25 14:51:37,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:37,230 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:51:37,231 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:51:37,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 14:51:37,231 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:51:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:51:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2112719166, now seen corresponding path program 1 times [2021-03-25 14:51:37,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:51:37,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493940981] [2021-03-25 14:51:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:51:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:51:37,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:37,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:37,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:37,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:37,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:51:37,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:51:37,290 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 14:51:37,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 14:51:37,296 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 14:51:37,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493940981] [2021-03-25 14:51:37,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:51:37,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 14:51:37,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947914454] [2021-03-25 14:51:37,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 14:51:37,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:51:37,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 14:51:37,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 14:51:37,299 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 120 [2021-03-25 14:51:37,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 15 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 14:51:37,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:51:37,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 120 [2021-03-25 14:51:37,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:51:37,318 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 14:51:37,318 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-03-25 14:51:37,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 17 events. 1/17 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2021-03-25 14:51:37,318 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-03-25 14:51:37,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 14 transitions, 94 flow [2021-03-25 14:51:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:51:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:51:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2021-03-25 14:51:37,320 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.745 [2021-03-25 14:51:37,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2021-03-25 14:51:37,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2021-03-25 14:51:37,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:51:37,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2021-03-25 14:51:37,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 14:51:37,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:37,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:51:37,322 INFO L185 Difference]: Start difference. First operand has 34 places, 15 transitions, 100 flow. Second operand 5 states and 447 transitions. [2021-03-25 14:51:37,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 14 transitions, 94 flow [2021-03-25 14:51:37,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 14 transitions, 68 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-25 14:51:37,323 INFO L241 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2021-03-25 14:51:37,323 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2021-03-25 14:51:37,323 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2021-03-25 14:51:37,324 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:51:37,324 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 0 transitions, 0 flow [2021-03-25 14:51:37,324 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 0 transitions, 0 flow [2021-03-25 14:51:37,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 14:51:37,324 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 14:51:37,324 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:51:37,324 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 14:51:37,324 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 14:51:37,324 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 14:51:37,324 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:51:37,324 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 0 [2021-03-25 14:51:37,327 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 14:51:37,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 14:51:37,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 14:51:37,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 02:51:37 BasicIcfg [2021-03-25 14:51:37,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 14:51:37,331 INFO L168 Benchmark]: Toolchain (without parser) took 4020.38 ms. Allocated memory was 408.9 MB in the beginning and 553.6 MB in the end (delta: 144.7 MB). Free memory was 371.9 MB in the beginning and 364.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 154.4 MB. Max. memory is 16.0 GB. [2021-03-25 14:51:37,332 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 408.9 MB. Free memory was 390.0 MB in the beginning and 389.9 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 14:51:37,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.58 ms. Allocated memory is still 408.9 MB. Free memory was 371.8 MB in the beginning and 371.1 MB in the end (delta: 695.4 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. [2021-03-25 14:51:37,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.54 ms. Allocated memory is still 408.9 MB. Free memory was 371.1 MB in the beginning and 369.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 14:51:37,333 INFO L168 Benchmark]: Boogie Preprocessor took 22.45 ms. Allocated memory is still 408.9 MB. Free memory was 369.0 MB in the beginning and 366.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 14:51:37,333 INFO L168 Benchmark]: RCFGBuilder took 344.54 ms. Allocated memory is still 408.9 MB. Free memory was 366.9 MB in the beginning and 342.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 14:51:37,333 INFO L168 Benchmark]: TraceAbstraction took 3101.48 ms. Allocated memory was 408.9 MB in the beginning and 553.6 MB in the end (delta: 144.7 MB). Free memory was 341.7 MB in the beginning and 364.1 MB in the end (delta: -22.4 MB). Peak memory consumption was 124.4 MB. Max. memory is 16.0 GB. [2021-03-25 14:51:37,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 408.9 MB. Free memory was 390.0 MB in the beginning and 389.9 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 508.58 ms. Allocated memory is still 408.9 MB. Free memory was 371.8 MB in the beginning and 371.1 MB in the end (delta: 695.4 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.54 ms. Allocated memory is still 408.9 MB. Free memory was 371.1 MB in the beginning and 369.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.45 ms. Allocated memory is still 408.9 MB. Free memory was 369.0 MB in the beginning and 366.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 344.54 ms. Allocated memory is still 408.9 MB. Free memory was 366.9 MB in the beginning and 342.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3101.48 ms. Allocated memory was 408.9 MB in the beginning and 553.6 MB in the end (delta: 144.7 MB). Free memory was 341.7 MB in the beginning and 364.1 MB in the end (delta: -22.4 MB). Peak memory consumption was 124.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1043.0ms, 67 PlacesBefore, 31 PlacesAfterwards, 58 TransitionsBefore, 21 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 861 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 586, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 485, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 485, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 485, positive: 461, positive conditional: 0, positive unconditional: 461, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 75, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 586, positive: 95, positive conditional: 0, positive unconditional: 95, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 485, unknown conditional: 0, unknown unconditional: 485] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 657.5ms, 31 PlacesBefore, 26 PlacesAfterwards, 21 TransitionsBefore, 16 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 351 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 152, positive: 118, positive conditional: 0, positive unconditional: 118, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 34, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 34, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 34, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 152, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 34, unknown conditional: 0, unknown unconditional: 34] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.3ms, 29 PlacesBefore, 29 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 94 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 62 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 32, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 32, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0ms, 29 PlacesBefore, 29 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 92 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 51 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 31, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0ms, 30 PlacesBefore, 30 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 92 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 79 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 40, positive: 31, positive conditional: 0, positive unconditional: 31, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 40, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 56, Positive conditional cache size: 0, Positive unconditional cache size: 56, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.9ms, 35 PlacesBefore, 33 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 44 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.4ms, 33 PlacesBefore, 31 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 101.1ms, 37 PlacesBefore, 34 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 30 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2986.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 307.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1124.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 21 SDslu, 14 SDs, 0 SdLazy, 95 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=7, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.4ms SsaConstructionTime, 136.9ms SatisfiabilityAnalysisTime, 376.9ms InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...