/usr/bin/java -Xmx8000000000 -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-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 14:52:32,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 14:52:32,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 14:52:32,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 14:52:32,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 14:52:32,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 14:52:32,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 14:52:32,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 14:52:32,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 14:52:32,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 14:52:32,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 14:52:32,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 14:52:32,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 14:52:32,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 14:52:32,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 14:52:32,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 14:52:32,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 14:52:32,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 14:52:32,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 14:52:32,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 14:52:32,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 14:52:32,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 14:52:32,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 14:52:32,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 14:52:32,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 14:52:32,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 14:52:32,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 14:52:32,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 14:52:32,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 14:52:32,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-13 14:52:32,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 14:52:32,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 14:52:32,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 14:52:32,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 14:52:32,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 14:52:32,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 14:52:32,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 14:52:32,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 14:52:32,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 14:52:32,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 14:52:32,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 14:52:32,511 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-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 14:52:32,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 14:52:32,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 14:52:32,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 14:52:32,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 14:52:32,531 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 14:52:32,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 14:52:32,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 14:52:32,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 14:52:32,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 14:52:32,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 14:52:32,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 14:52:32,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 14:52:32,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 14:52:32,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 14:52:32,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 14:52:32,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 14:52:32,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 14:52:32,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 14:52:32,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 14:52:32,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 14:52:32,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 14:52:32,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 14:52:32,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 14:52:32,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 14:52:32,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 14:52:32,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 14:52:32,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 14:52:32,535 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 14:52:32,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 14:52:32,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 14:52:32,535 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 14:52:32,535 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 14:52:32,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 14:52:32,536 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 14:52:32,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 14:52:32,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 14:52:32,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 14:52:32,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 14:52:32,873 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 14:52:32,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-08-13 14:52:32,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3d0087a/9b5838bf69b84d7c9ceb9ff9e7c7fa16/FLAG107157d95 [2021-08-13 14:52:33,396 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 14:52:33,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-08-13 14:52:33,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3d0087a/9b5838bf69b84d7c9ceb9ff9e7c7fa16/FLAG107157d95 [2021-08-13 14:52:33,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3d0087a/9b5838bf69b84d7c9ceb9ff9e7c7fa16 [2021-08-13 14:52:33,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 14:52:33,705 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 14:52:33,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 14:52:33,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 14:52:33,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 14:52:33,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 02:52:33" (1/1) ... [2021-08-13 14:52:33,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac07ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:33, skipping insertion in model container [2021-08-13 14:52:33,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 02:52:33" (1/1) ... [2021-08-13 14:52:33,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 14:52:33,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 14:52:33,875 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-13 14:52:34,009 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-08-13 14:52:34,023 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-08-13 14:52:34,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 14:52:34,041 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 14:52:34,062 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-13 14:52:34,087 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-08-13 14:52:34,098 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-08-13 14:52:34,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 14:52:34,169 INFO L208 MainTranslator]: Completed translation [2021-08-13 14:52:34,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34 WrapperNode [2021-08-13 14:52:34,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 14:52:34,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 14:52:34,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 14:52:34,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 14:52:34,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 14:52:34,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 14:52:34,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 14:52:34,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 14:52:34,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (1/1) ... [2021-08-13 14:52:34,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 14:52:34,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 14:52:34,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 14:52:34,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 14:52:34,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (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 [2021-08-13 14:52:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-13 14:52:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-13 14:52:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-13 14:52:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-13 14:52:34,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-13 14:52:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 14:52:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 14:52:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 14:52:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 14:52:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 14:52:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 14:52:34,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 14:52:34,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 14:52:34,349 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 14:52:34,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 14:52:34,711 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-13 14:52:34,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:52:34 BoogieIcfgContainer [2021-08-13 14:52:34,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 14:52:34,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 14:52:34,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 14:52:34,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 14:52:34,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 02:52:33" (1/3) ... [2021-08-13 14:52:34,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c217771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 02:52:34, skipping insertion in model container [2021-08-13 14:52:34,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:52:34" (2/3) ... [2021-08-13 14:52:34,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c217771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 02:52:34, skipping insertion in model container [2021-08-13 14:52:34,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:52:34" (3/3) ... [2021-08-13 14:52:34,719 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-08-13 14:52:34,723 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 14:52:34,724 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-13 14:52:34,724 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 14:52:34,747 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,747 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,748 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,749 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,751 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,751 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,751 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,751 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,751 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,752 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,756 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,756 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,756 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,756 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,756 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,757 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,757 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,758 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,772 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,772 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 14:52:34,780 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-13 14:52:34,798 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-13 14:52:34,814 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 14:52:34,814 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 14:52:34,814 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 14:52:34,814 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 14:52:34,814 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 14:52:34,814 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 14:52:34,814 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 14:52:34,814 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 14:52:34,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 115 transitions, 252 flow [2021-08-13 14:52:34,859 INFO L129 PetriNetUnfolder]: 21/115 cut-off events. [2021-08-13 14:52:34,860 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 14:52:34,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 115 events. 21/115 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2021-08-13 14:52:34,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 115 transitions, 252 flow [2021-08-13 14:52:34,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 103 transitions, 218 flow [2021-08-13 14:52:34,882 INFO L129 PetriNetUnfolder]: 10/63 cut-off events. [2021-08-13 14:52:34,882 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 14:52:34,882 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:52:34,883 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:52:34,883 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 14:52:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:52:34,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1929720339, now seen corresponding path program 1 times [2021-08-13 14:52:34,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:52:34,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129285948] [2021-08-13 14:52:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:52:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:52:35,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 14:52:35,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:52:35,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129285948] [2021-08-13 14:52:35,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129285948] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:52:35,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:52:35,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 14:52:35,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581518986] [2021-08-13 14:52:35,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-13 14:52:35,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:52:35,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-13 14:52:35,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-13 14:52:35,046 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 115 [2021-08-13 14:52:35,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 218 flow. Second operand has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 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) [2021-08-13 14:52:35,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:52:35,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 115 [2021-08-13 14:52:35,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:52:35,075 INFO L129 PetriNetUnfolder]: 10/95 cut-off events. [2021-08-13 14:52:35,075 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 14:52:35,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 95 events. 10/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 10/93 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-08-13 14:52:35,077 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 0 selfloop transitions, 0 changer transitions 0/93 dead transitions. [2021-08-13 14:52:35,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 198 flow [2021-08-13 14:52:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-13 14:52:35,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-08-13 14:52:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 220 transitions. [2021-08-13 14:52:35,087 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9565217391304348 [2021-08-13 14:52:35,087 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 220 transitions. [2021-08-13 14:52:35,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 220 transitions. [2021-08-13 14:52:35,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:52:35,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 220 transitions. [2021-08-13 14:52:35,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.0) internal successors, (220), 2 states have internal predecessors, (220), 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) [2021-08-13 14:52:35,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2021-08-13 14:52:35,097 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2021-08-13 14:52:35,097 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 1 predicate places. [2021-08-13 14:52:35,097 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 198 flow [2021-08-13 14:52:35,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 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) [2021-08-13 14:52:35,098 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:52:35,098 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:52:35,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 14:52:35,099 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 14:52:35,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:52:35,099 INFO L82 PathProgramCache]: Analyzing trace with hash -2126204053, now seen corresponding path program 1 times [2021-08-13 14:52:35,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:52:35,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246154287] [2021-08-13 14:52:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:52:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:52:35,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 14:52:35,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 14:52:35,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:52:35,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246154287] [2021-08-13 14:52:35,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246154287] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:52:35,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:52:35,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 14:52:35,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690055873] [2021-08-13 14:52:35,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 14:52:35,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:52:35,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 14:52:35,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 14:52:35,171 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 115 [2021-08-13 14:52:35,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2021-08-13 14:52:35,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:52:35,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 115 [2021-08-13 14:52:35,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:52:35,276 INFO L129 PetriNetUnfolder]: 22/170 cut-off events. [2021-08-13 14:52:35,276 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-08-13 14:52:35,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 170 events. 22/170 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 514 event pairs, 2 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 209. Up to 18 conditions per place. [2021-08-13 14:52:35,279 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 7 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2021-08-13 14:52:35,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 224 flow [2021-08-13 14:52:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 14:52:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 14:52:35,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2021-08-13 14:52:35,282 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8869565217391304 [2021-08-13 14:52:35,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2021-08-13 14:52:35,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2021-08-13 14:52:35,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:52:35,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2021-08-13 14:52:35,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-08-13 14:52:35,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:35,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:35,287 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2021-08-13 14:52:35,287 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 224 flow [2021-08-13 14:52:35,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2021-08-13 14:52:35,288 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:52:35,288 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:52:35,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 14:52:35,288 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 14:52:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:52:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1906086302, now seen corresponding path program 1 times [2021-08-13 14:52:35,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:52:35,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666561839] [2021-08-13 14:52:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:52:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:52:35,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 14:52:35,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 14:52:35,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:52:35,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666561839] [2021-08-13 14:52:35,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666561839] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:52:35,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:52:35,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 14:52:35,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509840666] [2021-08-13 14:52:35,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 14:52:35,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:52:35,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 14:52:35,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 14:52:35,337 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 115 [2021-08-13 14:52:35,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2021-08-13 14:52:35,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:52:35,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 115 [2021-08-13 14:52:35,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:52:35,371 INFO L129 PetriNetUnfolder]: 16/149 cut-off events. [2021-08-13 14:52:35,372 INFO L130 PetriNetUnfolder]: For 11/17 co-relation queries the response was YES. [2021-08-13 14:52:35,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 149 events. 16/149 cut-off events. For 11/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 394 event pairs, 2 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 197. Up to 11 conditions per place. [2021-08-13 14:52:35,374 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 6 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2021-08-13 14:52:35,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 232 flow [2021-08-13 14:52:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 14:52:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 14:52:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-08-13 14:52:35,377 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.881159420289855 [2021-08-13 14:52:35,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-08-13 14:52:35,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-08-13 14:52:35,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:52:35,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-08-13 14:52:35,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:35,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:35,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:35,380 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2021-08-13 14:52:35,380 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 232 flow [2021-08-13 14:52:35,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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) [2021-08-13 14:52:35,380 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:52:35,381 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:52:35,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 14:52:35,381 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 14:52:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:52:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -429576492, now seen corresponding path program 1 times [2021-08-13 14:52:35,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:52:35,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459671075] [2021-08-13 14:52:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:52:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:52:35,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 14:52:35,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 14:52:35,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 14:52:35,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:52:35,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459671075] [2021-08-13 14:52:35,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459671075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:52:35,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:52:35,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 14:52:35,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953121723] [2021-08-13 14:52:35,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 14:52:35,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:52:35,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 14:52:35,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 14:52:35,481 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 115 [2021-08-13 14:52:35,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2021-08-13 14:52:35,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:52:35,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 115 [2021-08-13 14:52:35,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:52:35,657 INFO L129 PetriNetUnfolder]: 163/660 cut-off events. [2021-08-13 14:52:35,657 INFO L130 PetriNetUnfolder]: For 55/57 co-relation queries the response was YES. [2021-08-13 14:52:35,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 660 events. 163/660 cut-off events. For 55/57 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4011 event pairs, 62 based on Foata normal form. 0/573 useless extension candidates. Maximal degree in co-relation 1060. Up to 174 conditions per place. [2021-08-13 14:52:35,664 INFO L132 encePairwiseOnDemand]: 98/115 looper letters, 31 selfloop transitions, 6 changer transitions 30/135 dead transitions. [2021-08-13 14:52:35,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 135 transitions, 451 flow [2021-08-13 14:52:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 14:52:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 14:52:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-08-13 14:52:35,667 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8208695652173913 [2021-08-13 14:52:35,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-08-13 14:52:35,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-08-13 14:52:35,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:52:35,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-08-13 14:52:35,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2021-08-13 14:52:35,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:35,672 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:35,672 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2021-08-13 14:52:35,672 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 135 transitions, 451 flow [2021-08-13 14:52:35,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2021-08-13 14:52:35,673 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:52:35,673 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:52:35,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 14:52:35,673 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 14:52:35,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:52:35,674 INFO L82 PathProgramCache]: Analyzing trace with hash -267242538, now seen corresponding path program 2 times [2021-08-13 14:52:35,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:52:35,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414140570] [2021-08-13 14:52:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:52:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:52:35,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 14:52:35,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 14:52:35,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:35,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 14:52:35,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:52:35,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414140570] [2021-08-13 14:52:35,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414140570] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:52:35,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:52:35,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 14:52:35,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596896873] [2021-08-13 14:52:35,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 14:52:35,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:52:35,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 14:52:35,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 14:52:35,747 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 115 [2021-08-13 14:52:35,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 135 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2021-08-13 14:52:35,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:52:35,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 115 [2021-08-13 14:52:35,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:52:36,009 INFO L129 PetriNetUnfolder]: 395/1307 cut-off events. [2021-08-13 14:52:36,009 INFO L130 PetriNetUnfolder]: For 88/90 co-relation queries the response was YES. [2021-08-13 14:52:36,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2525 conditions, 1307 events. 395/1307 cut-off events. For 88/90 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9288 event pairs, 148 based on Foata normal form. 0/1115 useless extension candidates. Maximal degree in co-relation 2517. Up to 361 conditions per place. [2021-08-13 14:52:36,018 INFO L132 encePairwiseOnDemand]: 98/115 looper letters, 42 selfloop transitions, 14 changer transitions 36/175 dead transitions. [2021-08-13 14:52:36,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 175 transitions, 663 flow [2021-08-13 14:52:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 14:52:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 14:52:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 471 transitions. [2021-08-13 14:52:36,020 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8191304347826087 [2021-08-13 14:52:36,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 471 transitions. [2021-08-13 14:52:36,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 471 transitions. [2021-08-13 14:52:36,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:52:36,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 471 transitions. [2021-08-13 14:52:36,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 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) [2021-08-13 14:52:36,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:36,024 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:36,024 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2021-08-13 14:52:36,024 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 175 transitions, 663 flow [2021-08-13 14:52:36,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2021-08-13 14:52:36,025 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 14:52:36,025 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 14:52:36,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 14:52:36,025 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 14:52:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 14:52:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash -333500082, now seen corresponding path program 3 times [2021-08-13 14:52:36,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 14:52:36,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081854772] [2021-08-13 14:52:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 14:52:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 14:52:36,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:36,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:36,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:36,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 14:52:36,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:36,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 14:52:36,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 14:52:36,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 14:52:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 14:52:36,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 14:52:36,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081854772] [2021-08-13 14:52:36,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081854772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 14:52:36,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 14:52:36,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 14:52:36,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374295653] [2021-08-13 14:52:36,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 14:52:36,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 14:52:36,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 14:52:36,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 14:52:36,065 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 115 [2021-08-13 14:52:36,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 175 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2021-08-13 14:52:36,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 14:52:36,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 115 [2021-08-13 14:52:36,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 14:52:36,316 INFO L129 PetriNetUnfolder]: 449/1476 cut-off events. [2021-08-13 14:52:36,316 INFO L130 PetriNetUnfolder]: For 288/358 co-relation queries the response was YES. [2021-08-13 14:52:36,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3334 conditions, 1476 events. 449/1476 cut-off events. For 288/358 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 10709 event pairs, 80 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 3325. Up to 465 conditions per place. [2021-08-13 14:52:36,323 INFO L132 encePairwiseOnDemand]: 97/115 looper letters, 0 selfloop transitions, 0 changer transitions 222/222 dead transitions. [2021-08-13 14:52:36,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 222 transitions, 1087 flow [2021-08-13 14:52:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 14:52:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 14:52:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-08-13 14:52:36,325 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8208695652173913 [2021-08-13 14:52:36,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-08-13 14:52:36,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-08-13 14:52:36,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 14:52:36,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-08-13 14:52:36,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2021-08-13 14:52:36,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:36,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 14:52:36,329 INFO L348 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2021-08-13 14:52:36,329 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 222 transitions, 1087 flow [2021-08-13 14:52:36,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2021-08-13 14:52:36,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown