/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 19:55:25,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 19:55:25,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 19:55:25,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 19:55:25,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 19:55:25,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 19:55:25,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 19:55:25,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 19:55:25,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 19:55:25,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 19:55:25,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 19:55:25,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 19:55:25,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 19:55:25,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 19:55:25,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 19:55:25,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 19:55:25,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 19:55:25,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 19:55:25,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 19:55:25,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 19:55:25,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 19:55:25,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 19:55:25,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 19:55:25,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 19:55:25,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 19:55:25,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 19:55:25,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 19:55:25,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 19:55:25,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 19:55:25,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 19:55:25,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 19:55:25,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 19:55:25,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 19:55:25,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 19:55:25,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 19:55:25,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 19:55:25,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 19:55:25,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 19:55:25,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 19:55:25,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 19:55:25,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 19:55:25,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 19:55:25,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 19:55:25,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 19:55:25,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 19:55:25,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 19:55:25,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 19:55:25,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 19:55:25,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 19:55:25,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 19:55:25,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 19:55:25,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 19:55:25,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 19:55:25,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 19:55:25,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 19:55:25,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 19:55:25,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 19:55:25,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 19:55:25,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:55:25,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 19:55:25,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 19:55:25,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 19:55:25,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 19:55:25,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 19:55:25,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 19:55:25,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 19:55:25,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 19:55:25,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 19:55:25,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 19:55:25,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 19:55:25,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 19:55:25,618 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 19:55:25,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-11 19:55:25,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc5d42c7/0ef51c5a006740bc96ebd72303ecfdd6/FLAG3336c3332 [2020-10-11 19:55:26,145 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 19:55:26,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-11 19:55:26,146 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 19:55:26,146 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 19:55:26,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc5d42c7/0ef51c5a006740bc96ebd72303ecfdd6/FLAG3336c3332 [2020-10-11 19:55:26,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc5d42c7/0ef51c5a006740bc96ebd72303ecfdd6 [2020-10-11 19:55:26,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 19:55:26,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 19:55:26,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 19:55:26,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 19:55:26,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 19:55:26,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd78623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26, skipping insertion in model container [2020-10-11 19:55:26,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 19:55:26,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 19:55:26,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:55:26,834 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 19:55:26,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:55:26,892 INFO L208 MainTranslator]: Completed translation [2020-10-11 19:55:26,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26 WrapperNode [2020-10-11 19:55:26,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 19:55:26,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 19:55:26,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 19:55:26,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 19:55:26,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 19:55:26,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 19:55:26,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 19:55:26,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 19:55:26,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (1/1) ... [2020-10-11 19:55:26,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 19:55:26,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 19:55:26,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 19:55:26,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 19:55:26,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (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 [2020-10-11 19:55:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 19:55:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-11 19:55:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-11 19:55:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 19:55:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 19:55:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 19:55:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 19:55:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 19:55:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 19:55:27,021 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 19:55:27,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 19:55:27,388 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-11 19:55:27,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:55:27 BoogieIcfgContainer [2020-10-11 19:55:27,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 19:55:27,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 19:55:27,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 19:55:27,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 19:55:27,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:55:26" (1/3) ... [2020-10-11 19:55:27,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fb3e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:55:27, skipping insertion in model container [2020-10-11 19:55:27,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:55:26" (2/3) ... [2020-10-11 19:55:27,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fb3e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:55:27, skipping insertion in model container [2020-10-11 19:55:27,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:55:27" (3/3) ... [2020-10-11 19:55:27,399 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-11 19:55:27,410 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 19:55:27,417 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 19:55:27,418 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 19:55:27,464 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,465 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,465 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,465 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,466 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,466 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,466 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,466 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,466 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,467 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,467 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,467 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,467 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,468 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,468 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,468 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,468 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,469 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,469 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,469 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,469 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,470 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,470 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,470 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,470 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,470 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,471 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,471 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,471 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,471 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,472 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,472 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,472 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,473 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,473 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,473 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,473 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,474 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,474 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,474 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,475 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,475 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,475 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,475 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,475 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,476 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,476 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,476 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,476 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,476 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,477 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,477 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,477 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,477 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,478 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,478 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,478 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,478 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,478 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,479 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,479 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,479 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,479 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,480 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,482 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,482 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,483 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,483 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,483 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,483 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,484 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,484 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,484 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,484 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,485 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,485 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,485 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,486 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,486 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,486 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,490 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,490 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,490 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,491 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,491 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,491 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,491 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,491 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,492 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,492 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,492 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,492 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,493 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,499 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,499 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,500 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,500 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,500 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,500 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,500 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,501 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,501 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,501 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,501 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,502 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,502 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:55:27,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 19:55:27,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:55:27,545 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:55:27,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:55:27,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:55:27,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:55:27,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:55:27,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:55:27,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:55:27,569 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-11 19:55:27,652 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-11 19:55:27,652 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 19:55:27,660 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2020-10-11 19:55:27,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 138 transitions, 298 flow [2020-10-11 19:55:27,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 123 transitions, 264 flow [2020-10-11 19:55:27,738 INFO L129 PetriNetUnfolder]: 8/124 cut-off events. [2020-10-11 19:55:27,738 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 19:55:27,739 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:55:27,740 INFO L255 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, 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] [2020-10-11 19:55:27,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:55:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:55:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash 650195933, now seen corresponding path program 1 times [2020-10-11 19:55:27,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:55:27,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015382833] [2020-10-11 19:55:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:55:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:55:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:55:27,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015382833] [2020-10-11 19:55:27,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:55:27,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 19:55:28,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882389217] [2020-10-11 19:55:28,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 19:55:28,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:55:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 19:55:28,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 19:55:28,032 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 138 [2020-10-11 19:55:28,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 123 transitions, 264 flow. Second operand 2 states. [2020-10-11 19:55:28,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:55:28,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 138 [2020-10-11 19:55:28,037 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:55:28,116 INFO L129 PetriNetUnfolder]: 6/123 cut-off events. [2020-10-11 19:55:28,116 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 19:55:28,122 INFO L80 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 123 events. 6/123 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 131. Up to 3 conditions per place. [2020-10-11 19:55:28,124 INFO L132 encePairwiseOnDemand]: 136/138 looper letters, 0 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2020-10-11 19:55:28,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 260 flow [2020-10-11 19:55:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 19:55:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-11 19:55:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 274 transitions. [2020-10-11 19:55:28,150 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9927536231884058 [2020-10-11 19:55:28,151 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 274 transitions. [2020-10-11 19:55:28,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 274 transitions. [2020-10-11 19:55:28,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:55:28,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 274 transitions. [2020-10-11 19:55:28,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-11 19:55:28,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-11 19:55:28,177 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-11 19:55:28,179 INFO L185 Difference]: Start difference. First operand has 121 places, 123 transitions, 264 flow. Second operand 2 states and 274 transitions. [2020-10-11 19:55:28,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 260 flow [2020-10-11 19:55:28,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 19:55:28,195 INFO L241 Difference]: Finished difference. Result has 118 places, 121 transitions, 248 flow [2020-10-11 19:55:28,198 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=248, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2020-10-11 19:55:28,200 INFO L341 CegarLoopForPetriNet]: 121 programPoint places, -3 predicate places. [2020-10-11 19:55:28,201 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 248 flow [2020-10-11 19:55:28,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 19:55:28,201 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:55:28,201 INFO L255 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, 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] [2020-10-11 19:55:28,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 19:55:28,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:55:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:55:28,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1126517553, now seen corresponding path program 1 times [2020-10-11 19:55:28,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:55:28,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104064025] [2020-10-11 19:55:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:55:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:55:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:55:28,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104064025] [2020-10-11 19:55:28,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:55:28,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 19:55:28,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413547955] [2020-10-11 19:55:28,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 19:55:28,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:55:28,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 19:55:28,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 19:55:28,571 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 138 [2020-10-11 19:55:28,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 121 transitions, 248 flow. Second operand 3 states. [2020-10-11 19:55:28,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:55:28,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 138 [2020-10-11 19:55:28,572 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:55:28,615 INFO L129 PetriNetUnfolder]: 17/201 cut-off events. [2020-10-11 19:55:28,615 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:55:28,617 INFO L80 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 201 events. 17/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 429 event pairs, 0 based on Foata normal form. 1/191 useless extension candidates. Maximal degree in co-relation 214. Up to 10 conditions per place. [2020-10-11 19:55:28,618 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 4 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2020-10-11 19:55:28,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 123 transitions, 266 flow [2020-10-11 19:55:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 19:55:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 19:55:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2020-10-11 19:55:28,621 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9685990338164251 [2020-10-11 19:55:28,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2020-10-11 19:55:28,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2020-10-11 19:55:28,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:55:28,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2020-10-11 19:55:28,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 19:55:28,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 19:55:28,627 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 19:55:28,627 INFO L185 Difference]: Start difference. First operand has 118 places, 121 transitions, 248 flow. Second operand 3 states and 401 transitions. [2020-10-11 19:55:28,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 123 transitions, 266 flow [2020-10-11 19:55:28,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-11 19:55:28,635 INFO L241 Difference]: Finished difference. Result has 121 places, 123 transitions, 267 flow [2020-10-11 19:55:28,636 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=121, PETRI_TRANSITIONS=123} [2020-10-11 19:55:28,638 INFO L341 CegarLoopForPetriNet]: 121 programPoint places, 0 predicate places. [2020-10-11 19:55:28,638 INFO L481 AbstractCegarLoop]: Abstraction has has 121 places, 123 transitions, 267 flow [2020-10-11 19:55:28,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 19:55:28,639 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:55:28,639 INFO L255 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, 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] [2020-10-11 19:55:28,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 19:55:28,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:55:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:55:28,640 INFO L82 PathProgramCache]: Analyzing trace with hash -597124591, now seen corresponding path program 1 times [2020-10-11 19:55:28,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:55:28,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085062005] [2020-10-11 19:55:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:55:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:55:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:55:28,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085062005] [2020-10-11 19:55:28,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:55:28,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:55:28,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696479661] [2020-10-11 19:55:28,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:55:28,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:55:28,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:55:28,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:55:28,956 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 138 [2020-10-11 19:55:28,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 123 transitions, 267 flow. Second operand 5 states. [2020-10-11 19:55:28,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:55:28,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 138 [2020-10-11 19:55:28,957 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:55:29,038 INFO L129 PetriNetUnfolder]: 16/200 cut-off events. [2020-10-11 19:55:29,039 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 19:55:29,040 INFO L80 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 200 events. 16/200 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 421 event pairs, 0 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 229. Up to 10 conditions per place. [2020-10-11 19:55:29,042 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 7 selfloop transitions, 0 changer transitions 13/126 dead transitions. [2020-10-11 19:55:29,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 295 flow [2020-10-11 19:55:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 19:55:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 19:55:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 774 transitions. [2020-10-11 19:55:29,045 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2020-10-11 19:55:29,046 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 774 transitions. [2020-10-11 19:55:29,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 774 transitions. [2020-10-11 19:55:29,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:55:29,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 774 transitions. [2020-10-11 19:55:29,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 19:55:29,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 19:55:29,052 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 19:55:29,052 INFO L185 Difference]: Start difference. First operand has 121 places, 123 transitions, 267 flow. Second operand 6 states and 774 transitions. [2020-10-11 19:55:29,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 295 flow [2020-10-11 19:55:29,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 19:55:29,057 INFO L241 Difference]: Finished difference. Result has 129 places, 113 transitions, 252 flow [2020-10-11 19:55:29,057 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=129, PETRI_TRANSITIONS=113} [2020-10-11 19:55:29,058 INFO L341 CegarLoopForPetriNet]: 121 programPoint places, 8 predicate places. [2020-10-11 19:55:29,058 INFO L481 AbstractCegarLoop]: Abstraction has has 129 places, 113 transitions, 252 flow [2020-10-11 19:55:29,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:55:29,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:55:29,058 INFO L255 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, 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] [2020-10-11 19:55:29,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 19:55:29,059 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:55:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:55:29,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1225785458, now seen corresponding path program 1 times [2020-10-11 19:55:29,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:55:29,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121378852] [2020-10-11 19:55:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:55:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:55:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:55:30,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121378852] [2020-10-11 19:55:30,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394470262] [2020-10-11 19:55:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:55:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:55:30,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 70 conjunts are in the unsatisfiable core [2020-10-11 19:55:30,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:55:30,631 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-11 19:55:30,632 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:55:30,643 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:55:30,644 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:55:30,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:21 [2020-10-11 19:55:30,674 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:55:30,674 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-11 19:55:30,676 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:55:30,716 INFO L625 ElimStorePlain]: treesize reduction 14, result has 68.2 percent of original size [2020-10-11 19:55:30,716 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:55:30,717 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:30 [2020-10-11 19:55:30,954 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:55:30,955 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-10-11 19:55:30,956 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:55:30,970 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:55:30,970 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:55:30,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:28 [2020-10-11 19:55:31,116 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-11 19:55:31,117 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:55:31,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:55:31,140 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-11 19:55:31,141 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:42 [2020-10-11 19:55:31,400 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-10-11 19:55:31,401 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:55:31,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:55:31,429 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-11 19:55:31,429 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:53, output treesize:49 [2020-10-11 19:55:33,945 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:55:33,946 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 60 [2020-10-11 19:55:33,947 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:55:33,976 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:55:33,982 INFO L545 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:55:33,983 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:73, output treesize:7 [2020-10-11 19:55:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:55:34,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 19:55:34,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 46 [2020-10-11 19:55:34,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855292282] [2020-10-11 19:55:34,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-11 19:55:34,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:55:34,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-11 19:55:34,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1998, Unknown=0, NotChecked=0, Total=2162 [2020-10-11 19:57:28,545 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 138 [2020-10-11 19:57:28,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 113 transitions, 252 flow. Second operand 47 states. [2020-10-11 19:57:28,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:57:28,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 138 [2020-10-11 19:57:28,548 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:57:29,833 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-11 19:57:30,074 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-11 19:57:30,325 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-11 19:57:30,572 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-11 19:57:30,840 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-11 19:57:31,063 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-11 19:57:31,311 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-11 19:57:31,721 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 19:57:32,058 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-11 19:57:32,311 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 19:57:32,593 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-11 19:57:32,969 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-11 19:57:33,497 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-11 19:57:33,838 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-11 19:57:35,253 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-11 19:57:35,646 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-11 19:57:36,065 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-11 19:57:36,494 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-11 19:57:36,902 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-11 19:57:37,364 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-11 19:57:38,059 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-11 19:57:38,431 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-11 19:57:39,059 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-11 19:57:42,061 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-10-11 19:57:42,610 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-11 19:57:42,968 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-11 19:57:44,205 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-10-11 19:57:44,570 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-11 19:57:45,115 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-10-11 19:57:45,875 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-10-11 19:57:47,476 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2020-10-11 19:57:48,213 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-11 19:57:48,856 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-10-11 19:57:51,360 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-11 19:57:52,534 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-11 19:57:53,344 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-11 19:57:54,016 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-11 19:57:54,268 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 19:57:54,474 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 19:57:55,732 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-10-11 19:57:56,553 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-11 19:57:57,021 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-11 19:57:57,282 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-11 19:57:57,497 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-11 19:57:57,679 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 19:57:58,512 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-10-11 19:57:58,897 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-11 19:58:00,772 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-11 19:58:01,508 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-11 19:58:01,725 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-11 19:58:02,201 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-11 19:58:02,622 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-11 19:58:02,968 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-11 19:58:03,733 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-11 19:58:04,409 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-11 19:58:05,796 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-11 19:58:06,392 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-11 19:58:07,185 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-11 19:58:07,755 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-11 19:58:08,806 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-11 19:58:09,722 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-11 19:58:10,622 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-11 19:58:10,935 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-11 19:58:11,529 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-11 19:58:11,989 INFO L129 PetriNetUnfolder]: 240/1464 cut-off events. [2020-10-11 19:58:11,989 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 19:58:11,997 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 1464 events. 240/1464 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11406 event pairs, 19 based on Foata normal form. 2/1337 useless extension candidates. Maximal degree in co-relation 2015. Up to 132 conditions per place. [2020-10-11 19:58:12,008 INFO L132 encePairwiseOnDemand]: 101/138 looper letters, 133 selfloop transitions, 84 changer transitions 28/309 dead transitions. [2020-10-11 19:58:12,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 309 transitions, 1170 flow [2020-10-11 19:58:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-11 19:58:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-11 19:58:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 6241 transitions. [2020-10-11 19:58:12,031 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5583288602612274 [2020-10-11 19:58:12,032 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 6241 transitions. [2020-10-11 19:58:12,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 6241 transitions. [2020-10-11 19:58:12,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:58:12,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 6241 transitions. [2020-10-11 19:58:12,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 82 states. [2020-10-11 19:58:12,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 82 states. [2020-10-11 19:58:12,069 INFO L81 ComplementDD]: Finished complementDD. Result 82 states. [2020-10-11 19:58:12,069 INFO L185 Difference]: Start difference. First operand has 129 places, 113 transitions, 252 flow. Second operand 81 states and 6241 transitions. [2020-10-11 19:58:12,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 309 transitions, 1170 flow [2020-10-11 19:58:12,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 309 transitions, 1126 flow, removed 22 selfloop flow, removed 4 redundant places. [2020-10-11 19:58:12,084 INFO L241 Difference]: Finished difference. Result has 219 places, 190 transitions, 713 flow [2020-10-11 19:58:12,084 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=713, PETRI_PLACES=219, PETRI_TRANSITIONS=190} [2020-10-11 19:58:12,085 INFO L341 CegarLoopForPetriNet]: 121 programPoint places, 98 predicate places. [2020-10-11 19:58:12,085 INFO L481 AbstractCegarLoop]: Abstraction has has 219 places, 190 transitions, 713 flow [2020-10-11 19:58:12,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-11 19:58:12,085 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:58:12,086 INFO L255 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, 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] [2020-10-11 19:58:12,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:58:12,287 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:58:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:58:12,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1732903406, now seen corresponding path program 1 times [2020-10-11 19:58:12,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:58:12,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257790921] [2020-10-11 19:58:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:58:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:58:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:58:12,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257790921] [2020-10-11 19:58:12,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369596723] [2020-10-11 19:58:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:58:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:58:12,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-11 19:58:12,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:58:13,241 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2020-10-11 19:58:13,241 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:58:13,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:13,244 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:58:13,244 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:3 [2020-10-11 19:58:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:58:13,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 19:58:13,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2020-10-11 19:58:13,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185579848] [2020-10-11 19:58:13,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 19:58:13,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:58:13,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 19:58:13,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2020-10-11 19:58:45,108 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 138 [2020-10-11 19:58:45,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 190 transitions, 713 flow. Second operand 27 states. [2020-10-11 19:58:45,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:58:45,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 138 [2020-10-11 19:58:45,110 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:58:46,794 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-11 19:58:47,126 INFO L129 PetriNetUnfolder]: 259/1601 cut-off events. [2020-10-11 19:58:47,126 INFO L130 PetriNetUnfolder]: For 962/1025 co-relation queries the response was YES. [2020-10-11 19:58:47,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 1601 events. 259/1601 cut-off events. For 962/1025 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12882 event pairs, 22 based on Foata normal form. 34/1559 useless extension candidates. Maximal degree in co-relation 2979. Up to 170 conditions per place. [2020-10-11 19:58:47,148 INFO L132 encePairwiseOnDemand]: 117/138 looper letters, 68 selfloop transitions, 45 changer transitions 13/253 dead transitions. [2020-10-11 19:58:47,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 253 transitions, 1231 flow [2020-10-11 19:58:47,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:58:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:58:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2277 transitions. [2020-10-11 19:58:47,159 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.75 [2020-10-11 19:58:47,159 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2277 transitions. [2020-10-11 19:58:47,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2277 transitions. [2020-10-11 19:58:47,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:58:47,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2277 transitions. [2020-10-11 19:58:47,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:58:47,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:58:47,173 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:58:47,174 INFO L185 Difference]: Start difference. First operand has 219 places, 190 transitions, 713 flow. Second operand 22 states and 2277 transitions. [2020-10-11 19:58:47,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 253 transitions, 1231 flow [2020-10-11 19:58:47,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 253 transitions, 1146 flow, removed 26 selfloop flow, removed 27 redundant places. [2020-10-11 19:58:47,200 INFO L241 Difference]: Finished difference. Result has 205 places, 215 transitions, 968 flow [2020-10-11 19:58:47,200 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=968, PETRI_PLACES=205, PETRI_TRANSITIONS=215} [2020-10-11 19:58:47,201 INFO L341 CegarLoopForPetriNet]: 121 programPoint places, 84 predicate places. [2020-10-11 19:58:47,201 INFO L481 AbstractCegarLoop]: Abstraction has has 205 places, 215 transitions, 968 flow [2020-10-11 19:58:47,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 19:58:47,201 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:58:47,201 INFO L255 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, 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] [2020-10-11 19:58:47,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:58:47,417 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 19:58:47,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:58:47,417 INFO L82 PathProgramCache]: Analyzing trace with hash 130561506, now seen corresponding path program 2 times [2020-10-11 19:58:47,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:58:47,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342055818] [2020-10-11 19:58:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:58:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:58:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:58:49,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342055818] [2020-10-11 19:58:49,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085648136] [2020-10-11 19:58:49,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:58:49,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 19:58:49,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 19:58:49,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 79 conjunts are in the unsatisfiable core [2020-10-11 19:58:49,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:58:49,527 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-11 19:58:49,527 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:58:49,533 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:49,534 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:58:49,534 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-11 19:58:49,595 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:49,596 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-11 19:58:49,597 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:58:49,652 INFO L625 ElimStorePlain]: treesize reduction 14, result has 70.2 percent of original size [2020-10-11 19:58:49,653 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:58:49,653 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:33 [2020-10-11 19:58:49,812 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:49,813 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-10-11 19:58:49,814 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:58:49,902 INFO L625 ElimStorePlain]: treesize reduction 28, result has 62.2 percent of original size [2020-10-11 19:58:49,903 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:58:49,903 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:46 [2020-10-11 19:58:50,296 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:50,297 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2020-10-11 19:58:50,298 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:58:50,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:50,345 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:58:50,345 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:46 [2020-10-11 19:58:50,609 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-11 19:58:50,610 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:58:50,651 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:50,652 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-11 19:58:50,652 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:57 [2020-10-11 19:58:52,093 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2020-10-11 19:58:52,094 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:58:52,148 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:52,153 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-11 19:58:52,153 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:78, output treesize:70 [2020-10-11 19:58:53,691 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2020-10-11 19:58:53,695 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 19:58:53,717 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 19:58:53,719 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 19:58:53,719 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:67, output treesize:7 [2020-10-11 19:58:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:58:53,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 19:58:53,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 47 [2020-10-11 19:58:53,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472375523] [2020-10-11 19:58:53,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-11 19:58:53,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:58:53,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-11 19:58:53,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2122, Unknown=0, NotChecked=0, Total=2256 [2020-10-11 20:02:06,112 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 138 [2020-10-11 20:02:06,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 215 transitions, 968 flow. Second operand 48 states. [2020-10-11 20:02:06,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 20:02:06,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 138 [2020-10-11 20:02:06,114 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 20:02:07,780 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-11 20:02:08,019 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-11 20:02:08,277 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-11 20:02:08,692 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-11 20:02:09,178 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-10-11 20:02:09,721 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-10-11 20:02:10,336 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2020-10-11 20:02:10,940 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2020-10-11 20:02:11,470 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2020-10-11 20:02:12,322 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2020-10-11 20:02:13,051 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2020-10-11 20:02:13,816 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 109 [2020-10-11 20:02:14,641 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 115 [2020-10-11 20:02:15,265 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2020-10-11 20:02:16,039 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 113 [2020-10-11 20:02:16,862 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 107 [2020-10-11 20:02:17,726 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 113 [2020-10-11 20:02:18,442 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2020-10-11 20:02:19,213 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 109 [2020-10-11 20:02:21,002 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2020-10-11 20:02:21,734 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2020-10-11 20:02:22,457 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 106 [2020-10-11 20:02:27,246 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 101 [2020-10-11 20:02:27,884 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 103 [2020-10-11 20:02:28,535 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2020-10-11 20:02:33,301 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2020-10-11 20:02:34,445 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2020-10-11 20:02:34,926 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2020-10-11 20:02:36,714 INFO L129 PetriNetUnfolder]: 445/2328 cut-off events. [2020-10-11 20:02:36,715 INFO L130 PetriNetUnfolder]: For 5593/5876 co-relation queries the response was YES. [2020-10-11 20:02:36,731 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5912 conditions, 2328 events. 445/2328 cut-off events. For 5593/5876 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 20877 event pairs, 23 based on Foata normal form. 116/2293 useless extension candidates. Maximal degree in co-relation 5881. Up to 269 conditions per place. [2020-10-11 20:02:36,745 INFO L132 encePairwiseOnDemand]: 99/138 looper letters, 89 selfloop transitions, 118 changer transitions 31/308 dead transitions. [2020-10-11 20:02:36,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 308 transitions, 2162 flow [2020-10-11 20:02:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-11 20:02:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-11 20:02:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 4125 transitions. [2020-10-11 20:02:36,752 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5535426731078905 [2020-10-11 20:02:36,753 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 4125 transitions. [2020-10-11 20:02:36,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 4125 transitions. [2020-10-11 20:02:36,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 20:02:36,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 4125 transitions. [2020-10-11 20:02:36,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 55 states. [2020-10-11 20:02:36,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 55 states. [2020-10-11 20:02:36,768 INFO L81 ComplementDD]: Finished complementDD. Result 55 states. [2020-10-11 20:02:36,768 INFO L185 Difference]: Start difference. First operand has 205 places, 215 transitions, 968 flow. Second operand 54 states and 4125 transitions. [2020-10-11 20:02:36,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 308 transitions, 2162 flow [2020-10-11 20:02:36,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 308 transitions, 2109 flow, removed 19 selfloop flow, removed 14 redundant places. [2020-10-11 20:02:36,792 INFO L241 Difference]: Finished difference. Result has 255 places, 245 transitions, 1621 flow [2020-10-11 20:02:36,793 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=1621, PETRI_PLACES=255, PETRI_TRANSITIONS=245} [2020-10-11 20:02:36,793 INFO L341 CegarLoopForPetriNet]: 121 programPoint places, 134 predicate places. [2020-10-11 20:02:36,793 INFO L481 AbstractCegarLoop]: Abstraction has has 255 places, 245 transitions, 1621 flow [2020-10-11 20:02:36,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-11 20:02:36,794 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 20:02:36,794 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 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] [2020-10-11 20:02:37,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 20:02:37,010 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 20:02:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 20:02:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1052795107, now seen corresponding path program 1 times [2020-10-11 20:02:37,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 20:02:37,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981271765] [2020-10-11 20:02:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 20:02:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:02:37,430 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2020-10-11 20:02:37,570 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-10-11 20:02:37,707 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2020-10-11 20:02:38,088 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-10-11 20:02:38,282 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-10-11 20:02:38,470 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-10-11 20:02:38,660 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-10-11 20:02:38,859 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-10-11 20:02:39,046 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-10-11 20:02:39,231 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-10-11 20:02:39,449 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2020-10-11 20:02:39,653 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-10-11 20:02:39,919 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-10-11 20:02:40,118 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-10-11 20:02:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:02:41,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981271765] [2020-10-11 20:02:41,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876485503] [2020-10-11 20:02:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 20:02:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 20:02:41,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 78 conjunts are in the unsatisfiable core [2020-10-11 20:02:41,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 20:02:42,060 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-11 20:02:42,060 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 20:02:42,091 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 20:02:42,091 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 20:02:42,091 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:21 [2020-10-11 20:02:42,298 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 20:02:42,299 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-11 20:02:42,299 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 20:02:42,387 INFO L625 ElimStorePlain]: treesize reduction 14, result has 70.2 percent of original size [2020-10-11 20:02:42,387 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 20:02:42,388 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:33 [2020-10-11 20:02:42,895 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 20:02:42,896 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-10-11 20:02:42,897 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 20:02:42,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 20:02:42,939 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 20:02:42,940 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:34 [2020-10-11 20:02:43,441 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-11 20:02:43,442 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 20:02:43,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 20:02:43,492 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-11 20:02:43,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:49, output treesize:45 [2020-10-11 20:02:46,491 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-10-11 20:02:46,493 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 20:02:46,493 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 115 [2020-10-11 20:02:46,495 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 20:02:46,646 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2020-10-11 20:02:46,648 INFO L625 ElimStorePlain]: treesize reduction 68, result has 44.3 percent of original size [2020-10-11 20:02:46,653 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-11 20:02:46,653 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:64, output treesize:54 [2020-10-11 20:02:48,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 20:02:48,514 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 20:02:48,514 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 16 [2020-10-11 20:02:48,520 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 20:02:48,552 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 20:02:48,558 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 20:02:48,559 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:51, output treesize:3 [2020-10-11 20:02:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 20:02:48,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 20:02:48,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 57 [2020-10-11 20:02:48,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012988158] [2020-10-11 20:02:48,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-11 20:02:48,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 20:02:48,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-11 20:02:48,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3119, Unknown=0, NotChecked=0, Total=3306 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown