/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:19:33,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:19:33,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:19:33,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:19:33,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:19:33,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:19:33,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:19:33,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:19:33,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:19:33,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:19:33,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:19:33,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:19:33,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:19:33,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:19:33,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:19:33,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:19:33,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:19:33,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:19:33,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:19:33,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:19:33,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:19:33,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:19:33,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:19:33,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:19:33,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:19:33,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:19:33,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:19:33,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:19:33,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:19:33,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:19:33,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:19:33,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:19:33,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:19:33,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:19:33,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:19:33,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:19:33,386 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-SemanticLbe.epf [2021-03-11 20:19:33,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:19:33,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:19:33,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:19:33,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:19:33,427 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:19:33,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:19:33,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:19:33,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:19:33,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:19:33,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:19:33,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:19:33,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:19:33,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:19:33,429 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:19:33,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:19:33,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:19:33,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:19:33,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:19:33,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:19:33,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:19:33,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:19:33,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:19:33,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:19:33,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:19:33,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:19:33,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:19:33,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:19:33,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:19:33,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:19:33,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:19:33,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:19:33,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:19:33,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:19:33,813 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:19:33,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2021-03-11 20:19:33,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261d004c7/d23474fab551438784ee59aa56ff8349/FLAG9ca68ce4f [2021-03-11 20:19:34,401 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:19:34,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2021-03-11 20:19:34,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261d004c7/d23474fab551438784ee59aa56ff8349/FLAG9ca68ce4f [2021-03-11 20:19:34,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261d004c7/d23474fab551438784ee59aa56ff8349 [2021-03-11 20:19:34,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:19:34,859 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:19:34,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:19:34,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:19:34,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:19:34,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:19:34" (1/1) ... [2021-03-11 20:19:34,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a580b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:34, skipping insertion in model container [2021-03-11 20:19:34,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:19:34" (1/1) ... [2021-03-11 20:19:34,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:19:34,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:19:35,029 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/safe001_tso.opt.i[949,962] [2021-03-11 20:19:35,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:19:35,220 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:19:35,231 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/safe001_tso.opt.i[949,962] [2021-03-11 20:19:35,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:19:35,334 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:19:35,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35 WrapperNode [2021-03-11 20:19:35,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:19:35,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:19:35,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:19:35,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:19:35,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:19:35,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:19:35,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:19:35,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:19:35,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (1/1) ... [2021-03-11 20:19:35,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:19:35,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:19:35,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:19:35,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:19:35,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (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 [2021-03-11 20:19:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:19:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:19:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:19:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:19:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:19:35,475 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:19:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:19:35,476 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:19:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:19:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:19:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:19:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:19:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:19:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:19:35,479 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:19:35,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:19:35,859 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:19:35,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:19:35 BoogieIcfgContainer [2021-03-11 20:19:35,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:19:35,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:19:35,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:19:35,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:19:35,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:19:34" (1/3) ... [2021-03-11 20:19:35,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a936fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:19:35, skipping insertion in model container [2021-03-11 20:19:35,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:35" (2/3) ... [2021-03-11 20:19:35,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a936fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:19:35, skipping insertion in model container [2021-03-11 20:19:35,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:19:35" (3/3) ... [2021-03-11 20:19:35,867 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2021-03-11 20:19:35,872 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:19:35,876 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:19:35,876 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:19:35,899 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,900 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,900 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,900 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,900 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,900 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,901 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,901 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,901 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,901 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,901 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,901 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,902 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,902 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,903 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,903 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,903 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,903 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,903 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,903 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,904 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,904 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,905 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,905 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,905 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,905 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,905 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,906 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,906 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,912 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,912 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,912 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,913 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,914 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,914 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,915 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,915 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:35,916 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:19:35,932 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:19:35,950 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:19:35,950 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:19:35,951 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:19:35,951 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:19:35,951 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:19:35,951 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:19:35,951 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:19:35,951 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:19:35,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:19:35,992 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 20:19:35,992 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:35,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:19:35,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:19:35,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 20:19:36,002 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:19:36,010 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:19:36,012 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:19:36,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-11 20:19:36,044 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 20:19:36,044 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:36,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:19:36,046 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:19:37,907 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:19:38,107 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:19:38,193 INFO L131 LiptonReduction]: Checked pairs total: 1775 [2021-03-11 20:19:38,193 INFO L133 LiptonReduction]: Total number of compositions: 46 [2021-03-11 20:19:38,195 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2196 [2021-03-11 20:19:38,202 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-11 20:19:38,202 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:38,202 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:38,203 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:38,203 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2056446484, now seen corresponding path program 1 times [2021-03-11 20:19:38,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:38,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094126745] [2021-03-11 20:19:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:38,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:38,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:19:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:38,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094126745] [2021-03-11 20:19:38,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:38,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:19:38,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603659550] [2021-03-11 20:19:38,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:19:38,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:38,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:19:38,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:19:38,371 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 120 [2021-03-11 20:19:38,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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) [2021-03-11 20:19:38,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:38,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 120 [2021-03-11 20:19:38,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:38,386 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:19:38,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:38,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 20:19:38,392 INFO L132 encePairwiseOnDemand]: 119/120 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-03-11 20:19:38,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2021-03-11 20:19:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:19:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:19:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2021-03-11 20:19:38,403 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9458333333333333 [2021-03-11 20:19:38,404 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2021-03-11 20:19:38,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2021-03-11 20:19:38,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:38,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2021-03-11 20:19:38,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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) [2021-03-11 20:19:38,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-03-11 20:19:38,419 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-03-11 20:19:38,421 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 227 transitions. [2021-03-11 20:19:38,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2021-03-11 20:19:38,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:19:38,424 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2021-03-11 20:19:38,426 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-03-11 20:19:38,426 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2021-03-11 20:19:38,427 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2021-03-11 20:19:38,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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) [2021-03-11 20:19:38,427 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:38,427 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:38,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:19:38,427 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:38,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:38,428 INFO L82 PathProgramCache]: Analyzing trace with hash -674668314, now seen corresponding path program 1 times [2021-03-11 20:19:38,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:38,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284087576] [2021-03-11 20:19:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:38,547 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:38,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:38,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284087576] [2021-03-11 20:19:38,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:38,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:19:38,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642782703] [2021-03-11 20:19:38,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:19:38,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:38,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:19:38,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:19:38,572 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:19:38,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:38,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:38,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:19:38,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:38,621 INFO L129 PetriNetUnfolder]: 88/208 cut-off events. [2021-03-11 20:19:38,621 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:38,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 208 events. 88/208 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 979 event pairs, 32 based on Foata normal form. 16/215 useless extension candidates. Maximal degree in co-relation 378. Up to 87 conditions per place. [2021-03-11 20:19:38,624 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 7 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2021-03-11 20:19:38,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 80 flow [2021-03-11 20:19:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:19:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:19:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2021-03-11 20:19:38,626 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2021-03-11 20:19:38,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2021-03-11 20:19:38,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2021-03-11 20:19:38,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:38,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2021-03-11 20:19:38,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2021-03-11 20:19:38,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-11 20:19:38,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-11 20:19:38,629 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 282 transitions. [2021-03-11 20:19:38,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 80 flow [2021-03-11 20:19:38,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:19:38,631 INFO L241 Difference]: Finished difference. Result has 29 places, 23 transitions, 94 flow [2021-03-11 20:19:38,631 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2021-03-11 20:19:38,631 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-03-11 20:19:38,631 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 94 flow [2021-03-11 20:19:38,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:38,632 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:38,632 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:38,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:19:38,632 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:38,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:38,633 INFO L82 PathProgramCache]: Analyzing trace with hash 560118217, now seen corresponding path program 1 times [2021-03-11 20:19:38,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:38,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682872607] [2021-03-11 20:19:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:38,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:38,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:38,679 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:38,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:38,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682872607] [2021-03-11 20:19:38,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:38,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:38,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101088265] [2021-03-11 20:19:38,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:38,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:38,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:38,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:38,690 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:19:38,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:38,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:38,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:19:38,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:38,727 INFO L129 PetriNetUnfolder]: 53/148 cut-off events. [2021-03-11 20:19:38,727 INFO L130 PetriNetUnfolder]: For 39/102 co-relation queries the response was YES. [2021-03-11 20:19:38,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 148 events. 53/148 cut-off events. For 39/102 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 642 event pairs, 2 based on Foata normal form. 6/150 useless extension candidates. Maximal degree in co-relation 434. Up to 59 conditions per place. [2021-03-11 20:19:38,729 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 15 selfloop transitions, 11 changer transitions 0/35 dead transitions. [2021-03-11 20:19:38,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 206 flow [2021-03-11 20:19:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2021-03-11 20:19:38,736 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7854166666666667 [2021-03-11 20:19:38,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2021-03-11 20:19:38,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2021-03-11 20:19:38,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:38,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2021-03-11 20:19:38,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2021-03-11 20:19:38,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-11 20:19:38,739 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-11 20:19:38,739 INFO L185 Difference]: Start difference. First operand has 29 places, 23 transitions, 94 flow. Second operand 4 states and 377 transitions. [2021-03-11 20:19:38,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 206 flow [2021-03-11 20:19:38,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:19:38,742 INFO L241 Difference]: Finished difference. Result has 33 places, 31 transitions, 170 flow [2021-03-11 20:19:38,742 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2021-03-11 20:19:38,742 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-11 20:19:38,742 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 170 flow [2021-03-11 20:19:38,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:38,743 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:38,743 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:38,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:19:38,743 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:38,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:38,744 INFO L82 PathProgramCache]: Analyzing trace with hash 183790457, now seen corresponding path program 1 times [2021-03-11 20:19:38,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:38,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027992438] [2021-03-11 20:19:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:38,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:38,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:38,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027992438] [2021-03-11 20:19:38,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:38,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:19:38,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798336884] [2021-03-11 20:19:38,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:19:38,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:38,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:19:38,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:19:38,834 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2021-03-11 20:19:38,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2021-03-11 20:19:38,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:38,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2021-03-11 20:19:38,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:38,861 INFO L129 PetriNetUnfolder]: 48/135 cut-off events. [2021-03-11 20:19:38,861 INFO L130 PetriNetUnfolder]: For 129/146 co-relation queries the response was YES. [2021-03-11 20:19:38,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 135 events. 48/135 cut-off events. For 129/146 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 566 event pairs, 10 based on Foata normal form. 5/136 useless extension candidates. Maximal degree in co-relation 387. Up to 52 conditions per place. [2021-03-11 20:19:38,868 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 1 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2021-03-11 20:19:38,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 180 flow [2021-03-11 20:19:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:19:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:19:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-11 20:19:38,871 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2021-03-11 20:19:38,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-11 20:19:38,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-11 20:19:38,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:38,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-11 20:19:38,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2021-03-11 20:19:38,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-11 20:19:38,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-11 20:19:38,875 INFO L185 Difference]: Start difference. First operand has 33 places, 31 transitions, 170 flow. Second operand 3 states and 310 transitions. [2021-03-11 20:19:38,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 180 flow [2021-03-11 20:19:38,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:19:38,885 INFO L241 Difference]: Finished difference. Result has 36 places, 31 transitions, 184 flow [2021-03-11 20:19:38,885 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2021-03-11 20:19:38,885 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-03-11 20:19:38,885 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 184 flow [2021-03-11 20:19:38,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2021-03-11 20:19:38,885 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:38,886 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:38,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:19:38,886 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:38,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:38,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1187399506, now seen corresponding path program 1 times [2021-03-11 20:19:38,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:38,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894422967] [2021-03-11 20:19:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:38,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:38,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:38,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:38,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:38,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894422967] [2021-03-11 20:19:38,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:38,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:38,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013743826] [2021-03-11 20:19:38,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:38,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:38,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:38,963 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 120 [2021-03-11 20:19:38,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2021-03-11 20:19:38,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:38,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 120 [2021-03-11 20:19:38,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:39,012 INFO L129 PetriNetUnfolder]: 48/153 cut-off events. [2021-03-11 20:19:39,012 INFO L130 PetriNetUnfolder]: For 213/242 co-relation queries the response was YES. [2021-03-11 20:19:39,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 153 events. 48/153 cut-off events. For 213/242 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 731 event pairs, 8 based on Foata normal form. 8/157 useless extension candidates. Maximal degree in co-relation 514. Up to 61 conditions per place. [2021-03-11 20:19:39,014 INFO L132 encePairwiseOnDemand]: 115/120 looper letters, 12 selfloop transitions, 7 changer transitions 4/37 dead transitions. [2021-03-11 20:19:39,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 265 flow [2021-03-11 20:19:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2021-03-11 20:19:39,020 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8125 [2021-03-11 20:19:39,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2021-03-11 20:19:39,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2021-03-11 20:19:39,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:39,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2021-03-11 20:19:39,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:39,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-11 20:19:39,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-11 20:19:39,023 INFO L185 Difference]: Start difference. First operand has 36 places, 31 transitions, 184 flow. Second operand 4 states and 390 transitions. [2021-03-11 20:19:39,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 265 flow [2021-03-11 20:19:39,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:19:39,029 INFO L241 Difference]: Finished difference. Result has 38 places, 29 transitions, 185 flow [2021-03-11 20:19:39,029 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2021-03-11 20:19:39,029 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-03-11 20:19:39,029 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 185 flow [2021-03-11 20:19:39,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2021-03-11 20:19:39,029 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:39,030 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:39,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:19:39,030 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:39,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1398140507, now seen corresponding path program 1 times [2021-03-11 20:19:39,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:39,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991723589] [2021-03-11 20:19:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:39,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:19:39,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,084 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:39,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:39,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991723589] [2021-03-11 20:19:39,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:39,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:39,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651871324] [2021-03-11 20:19:39,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:39,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:39,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:39,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:39,095 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:19:39,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:39,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:39,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:19:39,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:39,121 INFO L129 PetriNetUnfolder]: 16/79 cut-off events. [2021-03-11 20:19:39,121 INFO L130 PetriNetUnfolder]: For 92/94 co-relation queries the response was YES. [2021-03-11 20:19:39,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 79 events. 16/79 cut-off events. For 92/94 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 309 event pairs, 1 based on Foata normal form. 5/84 useless extension candidates. Maximal degree in co-relation 297. Up to 28 conditions per place. [2021-03-11 20:19:39,122 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 10 selfloop transitions, 12 changer transitions 0/31 dead transitions. [2021-03-11 20:19:39,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 241 flow [2021-03-11 20:19:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-11 20:19:39,124 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7770833333333333 [2021-03-11 20:19:39,124 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-11 20:19:39,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-11 20:19:39,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:39,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-11 20:19:39,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:39,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-11 20:19:39,127 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-11 20:19:39,127 INFO L185 Difference]: Start difference. First operand has 38 places, 29 transitions, 185 flow. Second operand 4 states and 373 transitions. [2021-03-11 20:19:39,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 241 flow [2021-03-11 20:19:39,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 222 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-11 20:19:39,129 INFO L241 Difference]: Finished difference. Result has 39 places, 30 transitions, 218 flow [2021-03-11 20:19:39,129 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2021-03-11 20:19:39,130 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-03-11 20:19:39,130 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 218 flow [2021-03-11 20:19:39,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:39,130 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:39,130 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:39,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:19:39,130 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:39,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1371517122, now seen corresponding path program 2 times [2021-03-11 20:19:39,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:39,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576318999] [2021-03-11 20:19:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:39,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:39,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576318999] [2021-03-11 20:19:39,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:39,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:19:39,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018822512] [2021-03-11 20:19:39,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:19:39,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:39,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:19:39,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:19:39,173 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 120 [2021-03-11 20:19:39,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-11 20:19:39,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:39,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 120 [2021-03-11 20:19:39,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:39,198 INFO L129 PetriNetUnfolder]: 14/74 cut-off events. [2021-03-11 20:19:39,198 INFO L130 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2021-03-11 20:19:39,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 74 events. 14/74 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 278 event pairs, 2 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 282. Up to 27 conditions per place. [2021-03-11 20:19:39,199 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 5 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2021-03-11 20:19:39,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 247 flow [2021-03-11 20:19:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:19:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:19:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-11 20:19:39,201 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2021-03-11 20:19:39,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-11 20:19:39,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-11 20:19:39,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:39,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-11 20:19:39,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2021-03-11 20:19:39,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-11 20:19:39,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-11 20:19:39,203 INFO L185 Difference]: Start difference. First operand has 39 places, 30 transitions, 218 flow. Second operand 3 states and 310 transitions. [2021-03-11 20:19:39,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 247 flow [2021-03-11 20:19:39,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 245 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-11 20:19:39,206 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 243 flow [2021-03-11 20:19:39,206 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2021-03-11 20:19:39,207 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2021-03-11 20:19:39,207 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 243 flow [2021-03-11 20:19:39,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-11 20:19:39,207 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:39,207 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:39,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:19:39,207 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:39,208 INFO L82 PathProgramCache]: Analyzing trace with hash 608636576, now seen corresponding path program 1 times [2021-03-11 20:19:39,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:39,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104915917] [2021-03-11 20:19:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:39,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:39,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104915917] [2021-03-11 20:19:39,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:39,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:39,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439099722] [2021-03-11 20:19:39,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:39,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:39,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:39,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:39,269 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 120 [2021-03-11 20:19:39,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2021-03-11 20:19:39,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:39,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 120 [2021-03-11 20:19:39,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:39,305 INFO L129 PetriNetUnfolder]: 12/75 cut-off events. [2021-03-11 20:19:39,305 INFO L130 PetriNetUnfolder]: For 181/190 co-relation queries the response was YES. [2021-03-11 20:19:39,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 75 events. 12/75 cut-off events. For 181/190 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 316 event pairs, 0 based on Foata normal form. 7/82 useless extension candidates. Maximal degree in co-relation 312. Up to 26 conditions per place. [2021-03-11 20:19:39,306 INFO L132 encePairwiseOnDemand]: 115/120 looper letters, 6 selfloop transitions, 4 changer transitions 13/36 dead transitions. [2021-03-11 20:19:39,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 321 flow [2021-03-11 20:19:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2021-03-11 20:19:39,310 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8083333333333333 [2021-03-11 20:19:39,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2021-03-11 20:19:39,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2021-03-11 20:19:39,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:39,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2021-03-11 20:19:39,311 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) [2021-03-11 20:19:39,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-11 20:19:39,313 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2021-03-11 20:19:39,313 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 243 flow. Second operand 4 states and 388 transitions. [2021-03-11 20:19:39,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 321 flow [2021-03-11 20:19:39,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 315 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:19:39,318 INFO L241 Difference]: Finished difference. Result has 45 places, 22 transitions, 157 flow [2021-03-11 20:19:39,319 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=45, PETRI_TRANSITIONS=22} [2021-03-11 20:19:39,319 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2021-03-11 20:19:39,319 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 22 transitions, 157 flow [2021-03-11 20:19:39,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2021-03-11 20:19:39,320 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:39,320 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:39,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:19:39,320 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:39,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:39,321 INFO L82 PathProgramCache]: Analyzing trace with hash 710715186, now seen corresponding path program 1 times [2021-03-11 20:19:39,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:39,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463543460] [2021-03-11 20:19:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:39,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:19:39,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,350 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:39,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:39,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463543460] [2021-03-11 20:19:39,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:39,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:19:39,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168400563] [2021-03-11 20:19:39,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:19:39,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:39,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:19:39,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:19:39,361 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:19:39,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 22 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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) [2021-03-11 20:19:39,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:39,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:19:39,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:39,388 INFO L129 PetriNetUnfolder]: 3/35 cut-off events. [2021-03-11 20:19:39,388 INFO L130 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2021-03-11 20:19:39,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 35 events. 3/35 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 149. Up to 11 conditions per place. [2021-03-11 20:19:39,389 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 3 selfloop transitions, 5 changer transitions 8/25 dead transitions. [2021-03-11 20:19:39,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 25 transitions, 221 flow [2021-03-11 20:19:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:19:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:19:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2021-03-11 20:19:39,391 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7611111111111111 [2021-03-11 20:19:39,391 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2021-03-11 20:19:39,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2021-03-11 20:19:39,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:39,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2021-03-11 20:19:39,393 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) [2021-03-11 20:19:39,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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) [2021-03-11 20:19:39,394 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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) [2021-03-11 20:19:39,394 INFO L185 Difference]: Start difference. First operand has 45 places, 22 transitions, 157 flow. Second operand 6 states and 548 transitions. [2021-03-11 20:19:39,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 25 transitions, 221 flow [2021-03-11 20:19:39,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 25 transitions, 169 flow, removed 5 selfloop flow, removed 11 redundant places. [2021-03-11 20:19:39,396 INFO L241 Difference]: Finished difference. Result has 40 places, 17 transitions, 94 flow [2021-03-11 20:19:39,396 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=40, PETRI_TRANSITIONS=17} [2021-03-11 20:19:39,397 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2021-03-11 20:19:39,397 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 17 transitions, 94 flow [2021-03-11 20:19:39,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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) [2021-03-11 20:19:39,397 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:39,397 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:39,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:19:39,397 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:39,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1175094302, now seen corresponding path program 2 times [2021-03-11 20:19:39,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:39,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60778962] [2021-03-11 20:19:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:39,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:39,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60778962] [2021-03-11 20:19:39,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:39,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:39,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123170504] [2021-03-11 20:19:39,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:39,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:39,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:39,461 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:19:39,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 17 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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) [2021-03-11 20:19:39,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:39,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:19:39,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:39,501 INFO L129 PetriNetUnfolder]: 23/66 cut-off events. [2021-03-11 20:19:39,501 INFO L130 PetriNetUnfolder]: For 79/90 co-relation queries the response was YES. [2021-03-11 20:19:39,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 66 events. 23/66 cut-off events. For 79/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 190 event pairs, 9 based on Foata normal form. 5/65 useless extension candidates. Maximal degree in co-relation 171. Up to 39 conditions per place. [2021-03-11 20:19:39,502 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 3 changer transitions 8/27 dead transitions. [2021-03-11 20:19:39,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 146 flow [2021-03-11 20:19:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:19:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:19:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-11 20:19:39,504 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2021-03-11 20:19:39,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-11 20:19:39,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-11 20:19:39,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:39,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-11 20:19:39,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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) [2021-03-11 20:19:39,506 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) [2021-03-11 20:19:39,507 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) [2021-03-11 20:19:39,507 INFO L185 Difference]: Start difference. First operand has 40 places, 17 transitions, 94 flow. Second operand 5 states and 448 transitions. [2021-03-11 20:19:39,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 146 flow [2021-03-11 20:19:39,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 107 flow, removed 3 selfloop flow, removed 10 redundant places. [2021-03-11 20:19:39,509 INFO L241 Difference]: Finished difference. Result has 35 places, 19 transitions, 86 flow [2021-03-11 20:19:39,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2021-03-11 20:19:39,509 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2021-03-11 20:19:39,509 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 86 flow [2021-03-11 20:19:39,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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) [2021-03-11 20:19:39,510 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:39,510 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:39,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:19:39,510 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:39,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:39,510 INFO L82 PathProgramCache]: Analyzing trace with hash 2068175754, now seen corresponding path program 1 times [2021-03-11 20:19:39,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:39,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108398305] [2021-03-11 20:19:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:39,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,554 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:19:39,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:19:39,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:39,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108398305] [2021-03-11 20:19:39,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:39,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:39,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225973268] [2021-03-11 20:19:39,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:19:39,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:39,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:19:39,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:19:39,566 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:19:39,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2021-03-11 20:19:39,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:39,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:19:39,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:39,597 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-03-11 20:19:39,597 INFO L130 PetriNetUnfolder]: For 66/109 co-relation queries the response was YES. [2021-03-11 20:19:39,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 40 events. 9/40 cut-off events. For 66/109 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 83 event pairs, 1 based on Foata normal form. 9/47 useless extension candidates. Maximal degree in co-relation 130. Up to 27 conditions per place. [2021-03-11 20:19:39,597 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 3 selfloop transitions, 5 changer transitions 10/29 dead transitions. [2021-03-11 20:19:39,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 180 flow [2021-03-11 20:19:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:19:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:19:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 536 transitions. [2021-03-11 20:19:39,600 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2021-03-11 20:19:39,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 536 transitions. [2021-03-11 20:19:39,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 536 transitions. [2021-03-11 20:19:39,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:39,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 536 transitions. [2021-03-11 20:19:39,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 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) [2021-03-11 20:19:39,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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) [2021-03-11 20:19:39,603 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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) [2021-03-11 20:19:39,603 INFO L185 Difference]: Start difference. First operand has 35 places, 19 transitions, 86 flow. Second operand 6 states and 536 transitions. [2021-03-11 20:19:39,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 180 flow [2021-03-11 20:19:39,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 175 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:19:39,605 INFO L241 Difference]: Finished difference. Result has 39 places, 19 transitions, 105 flow [2021-03-11 20:19:39,605 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=105, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2021-03-11 20:19:39,605 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-03-11 20:19:39,605 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 105 flow [2021-03-11 20:19:39,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2021-03-11 20:19:39,606 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:39,606 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:39,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:19:39,607 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash -311075111, now seen corresponding path program 1 times [2021-03-11 20:19:39,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:39,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088623947] [2021-03-11 20:19:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:39,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,671 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:19:39,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:19:39,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:39,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:19:39,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088623947] [2021-03-11 20:19:39,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:39,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:19:39,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243120105] [2021-03-11 20:19:39,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:19:39,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:39,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:19:39,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:19:39,682 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:19:39,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2021-03-11 20:19:39,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:39,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:19:39,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:39,712 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-11 20:19:39,712 INFO L130 PetriNetUnfolder]: For 49/70 co-relation queries the response was YES. [2021-03-11 20:19:39,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 20 events. 1/20 cut-off events. For 49/70 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 5/25 useless extension candidates. Maximal degree in co-relation 66. Up to 9 conditions per place. [2021-03-11 20:19:39,713 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-03-11 20:19:39,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 20 transitions, 127 flow [2021-03-11 20:19:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:19:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:19:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2021-03-11 20:19:39,715 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2021-03-11 20:19:39,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2021-03-11 20:19:39,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2021-03-11 20:19:39,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:39,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2021-03-11 20:19:39,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 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) [2021-03-11 20:19:39,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:39,719 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:39,719 INFO L185 Difference]: Start difference. First operand has 39 places, 19 transitions, 105 flow. Second operand 7 states and 612 transitions. [2021-03-11 20:19:39,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 20 transitions, 127 flow [2021-03-11 20:19:39,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 103 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 20:19:39,720 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-11 20:19:39,720 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-11 20:19:39,721 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-03-11 20:19:39,721 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2021-03-11 20:19:39,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2021-03-11 20:19:39,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 20:19:39,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:19:39 BasicIcfg [2021-03-11 20:19:39,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:19:39,728 INFO L168 Benchmark]: Toolchain (without parser) took 4869.80 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 234.8 MB in the beginning and 150.5 MB in the end (delta: 84.3 MB). Peak memory consumption was 205.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:39,728 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:19:39,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.38 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 234.0 MB in the beginning and 340.9 MB in the end (delta: -106.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:39,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.10 ms. Allocated memory is still 377.5 MB. Free memory was 340.4 MB in the beginning and 338.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:39,730 INFO L168 Benchmark]: Boogie Preprocessor took 19.96 ms. Allocated memory is still 377.5 MB. Free memory was 338.7 MB in the beginning and 337.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:39,732 INFO L168 Benchmark]: RCFGBuilder took 463.83 ms. Allocated memory is still 377.5 MB. Free memory was 337.2 MB in the beginning and 315.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:39,733 INFO L168 Benchmark]: TraceAbstraction took 3862.92 ms. Allocated memory is still 377.5 MB. Free memory was 314.7 MB in the beginning and 150.5 MB in the end (delta: 164.2 MB). Peak memory consumption was 167.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:39,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 474.38 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 234.0 MB in the beginning and 340.9 MB in the end (delta: -106.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.10 ms. Allocated memory is still 377.5 MB. Free memory was 340.4 MB in the beginning and 338.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.96 ms. Allocated memory is still 377.5 MB. Free memory was 338.7 MB in the beginning and 337.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 463.83 ms. Allocated memory is still 377.5 MB. Free memory was 337.2 MB in the beginning and 315.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3862.92 ms. Allocated memory is still 377.5 MB. Free memory was 314.7 MB in the beginning and 150.5 MB in the end (delta: 164.2 MB). Peak memory consumption was 167.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2181.2ms, 68 PlacesBefore, 27 PlacesAfterwards, 59 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1775 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 990, positive: 909, positive conditional: 0, positive unconditional: 909, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 628, positive: 582, positive conditional: 0, positive unconditional: 582, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 628, positive: 568, positive conditional: 0, positive unconditional: 568, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 60, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 234, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 169, negative conditional: 0, negative unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 990, positive: 327, positive conditional: 0, positive unconditional: 327, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 628, unknown conditional: 0, unknown unconditional: 628] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 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: 3775.1ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 581.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2247.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 27 SDslu, 25 SDs, 0 SdLazy, 141 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 117.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 102.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=7, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.1ms SsaConstructionTime, 166.3ms SatisfiabilityAnalysisTime, 548.0ms InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 532 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...