/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 11:28:07,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 11:28:07,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 11:28:07,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 11:28:07,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 11:28:07,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 11:28:07,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 11:28:07,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 11:28:07,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 11:28:07,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 11:28:07,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 11:28:07,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 11:28:07,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 11:28:07,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 11:28:07,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 11:28:07,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 11:28:07,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 11:28:07,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 11:28:07,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 11:28:07,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 11:28:07,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 11:28:07,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 11:28:07,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 11:28:07,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 11:28:07,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 11:28:07,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 11:28:07,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 11:28:07,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 11:28:07,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 11:28:07,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 11:28:07,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 11:28:07,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 11:28:07,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 11:28:07,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 11:28:07,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 11:28:07,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 11:28:07,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 11:28:07,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 11:28:07,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 11:28:07,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 11:28:07,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 11:28:07,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 11:28:07,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 11:28:07,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 11:28:07,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 11:28:07,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 11:28:07,523 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 11:28:07,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 11:28:07,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 11:28:07,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 11:28:07,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 11:28:07,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 11:28:07,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 11:28:07,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 11:28:07,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 11:28:07,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 11:28:07,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 11:28:07,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 11:28:07,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 11:28:07,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 11:28:07,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 11:28:07,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 11:28:07,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 11:28:07,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 11:28:07,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 11:28:07,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 11:28:07,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 11:28:07,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 11:28:07,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 11:28:07,526 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 11:28:07,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 11:28:07,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 11:28:07,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 11:28:07,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 11:28:07,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 11:28:07,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 11:28:07,829 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 11:28:07,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-06-10 11:28:07,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57451044/c0b5a5bc6c294650a6029448a244109c/FLAG98d4ada2c [2021-06-10 11:28:08,414 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 11:28:08,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-06-10 11:28:08,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57451044/c0b5a5bc6c294650a6029448a244109c/FLAG98d4ada2c [2021-06-10 11:28:08,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57451044/c0b5a5bc6c294650a6029448a244109c [2021-06-10 11:28:08,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 11:28:08,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 11:28:08,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 11:28:08,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 11:28:08,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 11:28:08,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:28:08" (1/1) ... [2021-06-10 11:28:08,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7559fe95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:08, skipping insertion in model container [2021-06-10 11:28:08,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:28:08" (1/1) ... [2021-06-10 11:28:08,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 11:28:08,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 11:28:09,128 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-06-10 11:28:09,152 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-06-10 11:28:09,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:28:09,179 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 11:28:09,235 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-06-10 11:28:09,237 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-06-10 11:28:09,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:28:09,299 INFO L208 MainTranslator]: Completed translation [2021-06-10 11:28:09,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09 WrapperNode [2021-06-10 11:28:09,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 11:28:09,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 11:28:09,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 11:28:09,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 11:28:09,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 11:28:09,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 11:28:09,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 11:28:09,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 11:28:09,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... [2021-06-10 11:28:09,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 11:28:09,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 11:28:09,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 11:28:09,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 11:28:09,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 11:28:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-10 11:28:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-10 11:28:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 11:28:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 11:28:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 11:28:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 11:28:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 11:28:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 11:28:09,430 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 11:28:10,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 11:28:10,062 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-10 11:28:10,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:28:10 BoogieIcfgContainer [2021-06-10 11:28:10,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 11:28:10,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 11:28:10,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 11:28:10,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 11:28:10,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:28:08" (1/3) ... [2021-06-10 11:28:10,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dcbf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:28:10, skipping insertion in model container [2021-06-10 11:28:10,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:28:09" (2/3) ... [2021-06-10 11:28:10,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dcbf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:28:10, skipping insertion in model container [2021-06-10 11:28:10,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:28:10" (3/3) ... [2021-06-10 11:28:10,070 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-06-10 11:28:10,075 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 11:28:10,080 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-10 11:28:10,080 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 11:28:10,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,107 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,107 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:28:10,118 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 11:28:10,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 11:28:10,161 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 11:28:10,161 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 11:28:10,161 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 11:28:10,162 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 11:28:10,162 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 11:28:10,162 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 11:28:10,162 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 11:28:10,162 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 11:28:10,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2021-06-10 11:28:10,196 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-06-10 11:28:10,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:28:10,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-06-10 11:28:10,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 99 flow [2021-06-10 11:28:10,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 95 flow [2021-06-10 11:28:10,209 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-06-10 11:28:10,209 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:28:10,210 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:28:10,210 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 11:28:10,211 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:28:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:28:10,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1710374585, now seen corresponding path program 1 times [2021-06-10 11:28:10,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:28:10,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732198518] [2021-06-10 11:28:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:28:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:28:10,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:28:10,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:28:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:28:10,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732198518] [2021-06-10 11:28:10,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:28:10,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 11:28:10,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967193339] [2021-06-10 11:28:10,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:28:10,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:28:10,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:28:10,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:28:10,433 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 47 [2021-06-10 11:28:10,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:28:10,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 47 [2021-06-10 11:28:10,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:28:10,481 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-06-10 11:28:10,481 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:28:10,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 35. Up to 5 conditions per place. [2021-06-10 11:28:10,484 INFO L132 encePairwiseOnDemand]: 42/47 looper letters, 2 selfloop transitions, 2 changer transitions 9/45 dead transitions. [2021-06-10 11:28:10,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 103 flow [2021-06-10 11:28:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:28:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:28:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2021-06-10 11:28:10,497 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361702127659575 [2021-06-10 11:28:10,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 132 transitions. [2021-06-10 11:28:10,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 132 transitions. [2021-06-10 11:28:10,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:28:10,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 132 transitions. [2021-06-10 11:28:10,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,516 INFO L185 Difference]: Start difference. First operand has 48 places, 46 transitions, 95 flow. Second operand 3 states and 132 transitions. [2021-06-10 11:28:10,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 103 flow [2021-06-10 11:28:10,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 11:28:10,527 INFO L241 Difference]: Finished difference. Result has 48 places, 35 transitions, 76 flow [2021-06-10 11:28:10,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2021-06-10 11:28:10,540 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2021-06-10 11:28:10,540 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 76 flow [2021-06-10 11:28:10,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,540 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:28:10,540 INFO L263 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] [2021-06-10 11:28:10,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 11:28:10,541 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:28:10,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:28:10,542 INFO L82 PathProgramCache]: Analyzing trace with hash 273749541, now seen corresponding path program 1 times [2021-06-10 11:28:10,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:28:10,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608725990] [2021-06-10 11:28:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:28:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:28:10,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:28:10,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:28:10,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:28:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:28:10,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608725990] [2021-06-10 11:28:10,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:28:10,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:28:10,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122969396] [2021-06-10 11:28:10,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:28:10,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:28:10,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:28:10,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:28:10,638 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 47 [2021-06-10 11:28:10,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:28:10,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 47 [2021-06-10 11:28:10,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:28:10,656 INFO L129 PetriNetUnfolder]: 2/37 cut-off events. [2021-06-10 11:28:10,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:28:10,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 2/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2021-06-10 11:28:10,657 INFO L132 encePairwiseOnDemand]: 43/47 looper letters, 2 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2021-06-10 11:28:10,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 88 flow [2021-06-10 11:28:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:28:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:28:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2021-06-10 11:28:10,663 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9361702127659575 [2021-06-10 11:28:10,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 132 transitions. [2021-06-10 11:28:10,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 132 transitions. [2021-06-10 11:28:10,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:28:10,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 132 transitions. [2021-06-10 11:28:10,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,667 INFO L185 Difference]: Start difference. First operand has 48 places, 35 transitions, 76 flow. Second operand 3 states and 132 transitions. [2021-06-10 11:28:10,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 88 flow [2021-06-10 11:28:10,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 11:28:10,670 INFO L241 Difference]: Finished difference. Result has 41 places, 35 transitions, 84 flow [2021-06-10 11:28:10,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2021-06-10 11:28:10,671 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2021-06-10 11:28:10,671 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 84 flow [2021-06-10 11:28:10,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,672 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:28:10,672 INFO L263 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] [2021-06-10 11:28:10,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 11:28:10,672 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:28:10,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:28:10,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1356167129, now seen corresponding path program 1 times [2021-06-10 11:28:10,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:28:10,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305442033] [2021-06-10 11:28:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:28:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:28:10,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:28:10,753 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-10 11:28:10,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 11:28:10,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-10 11:28:10,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 11:28:10,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:28:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:28:10,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305442033] [2021-06-10 11:28:10,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:28:10,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 11:28:10,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328856640] [2021-06-10 11:28:10,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:28:10,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:28:10,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:28:10,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:28:10,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 47 [2021-06-10 11:28:10,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:28:10,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 47 [2021-06-10 11:28:10,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:28:10,825 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2021-06-10 11:28:10,825 INFO L130 PetriNetUnfolder]: For 10/14 co-relation queries the response was YES. [2021-06-10 11:28:10,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 50 events. 6/50 cut-off events. For 10/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 63. Up to 9 conditions per place. [2021-06-10 11:28:10,826 INFO L132 encePairwiseOnDemand]: 40/47 looper letters, 5 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2021-06-10 11:28:10,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 124 flow [2021-06-10 11:28:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 11:28:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 11:28:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2021-06-10 11:28:10,828 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8617021276595744 [2021-06-10 11:28:10,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 162 transitions. [2021-06-10 11:28:10,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 162 transitions. [2021-06-10 11:28:10,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:28:10,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 162 transitions. [2021-06-10 11:28:10,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,830 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,830 INFO L185 Difference]: Start difference. First operand has 41 places, 35 transitions, 84 flow. Second operand 4 states and 162 transitions. [2021-06-10 11:28:10,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 124 flow [2021-06-10 11:28:10,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 11:28:10,832 INFO L241 Difference]: Finished difference. Result has 43 places, 37 transitions, 111 flow [2021-06-10 11:28:10,832 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2021-06-10 11:28:10,832 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2021-06-10 11:28:10,832 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 111 flow [2021-06-10 11:28:10,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:28:10,833 INFO L263 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] [2021-06-10 11:28:10,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 11:28:10,833 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:28:10,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:28:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash 322882534, now seen corresponding path program 1 times [2021-06-10 11:28:10,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:28:10,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113724985] [2021-06-10 11:28:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:28:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:28:10,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:28:10,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:28:10,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:28:10,903 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-10 11:28:10,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:28:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:28:10,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113724985] [2021-06-10 11:28:10,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:28:10,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:28:10,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251381077] [2021-06-10 11:28:10,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:28:10,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:28:10,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:28:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:28:10,922 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 47 [2021-06-10 11:28:10,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:28:10,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 47 [2021-06-10 11:28:10,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:28:10,938 INFO L129 PetriNetUnfolder]: 4/44 cut-off events. [2021-06-10 11:28:10,938 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2021-06-10 11:28:10,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 44 events. 4/44 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 51. Up to 7 conditions per place. [2021-06-10 11:28:10,939 INFO L132 encePairwiseOnDemand]: 44/47 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2021-06-10 11:28:10,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 113 flow [2021-06-10 11:28:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 11:28:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 11:28:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2021-06-10 11:28:10,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8882978723404256 [2021-06-10 11:28:10,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 167 transitions. [2021-06-10 11:28:10,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 167 transitions. [2021-06-10 11:28:10,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:28:10,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 167 transitions. [2021-06-10 11:28:10,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,943 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,943 INFO L185 Difference]: Start difference. First operand has 43 places, 37 transitions, 111 flow. Second operand 4 states and 167 transitions. [2021-06-10 11:28:10,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 113 flow [2021-06-10 11:28:10,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 11:28:10,945 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2021-06-10 11:28:10,945 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2021-06-10 11:28:10,945 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2021-06-10 11:28:10,945 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2021-06-10 11:28:10,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:28:10,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 11:28:10,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:28:10 BasicIcfg [2021-06-10 11:28:10,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 11:28:10,951 INFO L168 Benchmark]: Toolchain (without parser) took 2086.56 ms. Allocated memory is still 392.2 MB. Free memory was 355.0 MB in the beginning and 241.7 MB in the end (delta: 113.3 MB). Peak memory consumption was 113.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:28:10,952 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 392.2 MB. Free memory was 373.4 MB in the beginning and 373.3 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 11:28:10,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.09 ms. Allocated memory is still 392.2 MB. Free memory was 354.8 MB in the beginning and 356.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:28:10,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.39 ms. Allocated memory is still 392.2 MB. Free memory was 356.0 MB in the beginning and 353.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:28:10,957 INFO L168 Benchmark]: Boogie Preprocessor took 19.47 ms. Allocated memory is still 392.2 MB. Free memory was 353.9 MB in the beginning and 352.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 11:28:10,958 INFO L168 Benchmark]: RCFGBuilder took 694.64 ms. Allocated memory is still 392.2 MB. Free memory was 352.8 MB in the beginning and 307.7 MB in the end (delta: 45.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:28:10,958 INFO L168 Benchmark]: TraceAbstraction took 885.84 ms. Allocated memory is still 392.2 MB. Free memory was 307.7 MB in the beginning and 241.7 MB in the end (delta: 66.1 MB). Peak memory consumption was 65.0 MB. Max. memory is 16.0 GB. [2021-06-10 11:28:10,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 392.2 MB. Free memory was 373.4 MB in the beginning and 373.3 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 431.09 ms. Allocated memory is still 392.2 MB. Free memory was 354.8 MB in the beginning and 356.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.39 ms. Allocated memory is still 392.2 MB. Free memory was 356.0 MB in the beginning and 353.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.47 ms. Allocated memory is still 392.2 MB. Free memory was 353.9 MB in the beginning and 352.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 694.64 ms. Allocated memory is still 392.2 MB. Free memory was 352.8 MB in the beginning and 307.7 MB in the end (delta: 45.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 885.84 ms. Allocated memory is still 392.2 MB. Free memory was 307.7 MB in the beginning and 241.7 MB in the end (delta: 66.1 MB). Peak memory consumption was 65.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 790.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 231.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 40.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 22 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.7ms SsaConstructionTime, 84.7ms SatisfiabilityAnalysisTime, 270.1ms InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...