/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:21:34,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:21:34,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:21:34,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-26 03:21:34,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:21:34,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:21:34,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:21:34,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:21:34,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:21:34,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:21:34,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:21:34,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:21:34,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:21:34,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:21:34,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:21:34,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:21:34,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 03:21:34,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 03:21:34,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 03:21:34,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 03:21:34,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 03:21:34,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 03:21:34,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 03:21:34,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 03:21:34,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 03:21:34,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:21:34,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:21:34,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:21:34,476 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 03:21:34,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:21:34,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:21:34,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:21:34,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:21:34,515 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:21:34,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:21:34,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:21:34,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:21:34,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:21:34,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:21:34,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:21:34,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:21:34,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:21:34,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:21:34,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:21:34,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:21:34,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:21:34,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:21:34,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:21:34,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:21:34,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:21:34,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:21:34,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:21:34,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:21:34,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:21:34,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:21:34,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:21:34,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:21:34,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:21:34,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:21:34,520 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:21:34,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:21:34,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:21:34,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:21:34,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 03:21:34,855 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 03:21:34,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c [2021-03-26 03:21:34,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759bdd15e/236f5e73db0a48fa8a5e0ada09bc68a1/FLAGa07a2976d [2021-03-26 03:21:35,320 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 03:21:35,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c [2021-03-26 03:21:35,321 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-26 03:21:35,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759bdd15e/236f5e73db0a48fa8a5e0ada09bc68a1/FLAGa07a2976d [2021-03-26 03:21:35,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759bdd15e/236f5e73db0a48fa8a5e0ada09bc68a1 [2021-03-26 03:21:35,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:21:35,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 03:21:35,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 03:21:35,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 03:21:35,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 03:21:35,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8344006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35, skipping insertion in model container [2021-03-26 03:21:35,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 03:21:35,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 03:21:35,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 03:21:35,574 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 03:21:35,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 03:21:35,594 INFO L208 MainTranslator]: Completed translation [2021-03-26 03:21:35,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35 WrapperNode [2021-03-26 03:21:35,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 03:21:35,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:21:35,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:21:35,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:21:35,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:21:35,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:21:35,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:21:35,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:21:35,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... [2021-03-26 03:21:35,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:21:35,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:21:35,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:21:35,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:21:35,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:21:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 03:21:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 03:21:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 03:21:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-26 03:21:35,718 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-26 03:21:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:21:35,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:21:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 03:21:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 03:21:35,721 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 03:21:35,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:21:35,941 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-26 03:21:35,941 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: fooEXIT is neither atomic block end nor error location. [2021-03-26 03:21:35,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:21:35 BoogieIcfgContainer [2021-03-26 03:21:35,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:21:35,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:21:35,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:21:35,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:21:35,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 03:21:35" (1/3) ... [2021-03-26 03:21:35,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e51797b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:21:35, skipping insertion in model container [2021-03-26 03:21:35,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 03:21:35" (2/3) ... [2021-03-26 03:21:35,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e51797b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:21:35, skipping insertion in model container [2021-03-26 03:21:35,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:21:35" (3/3) ... [2021-03-26 03:21:35,949 INFO L111 eAbstractionObserver]: Analyzing ICFG 07-return-before-end.c [2021-03-26 03:21:35,954 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:21:35,958 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:21:35,958 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:21:35,976 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,976 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,976 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,977 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,977 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,977 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,977 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,977 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,978 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,978 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,978 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,978 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,978 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,978 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,979 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,979 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,981 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,981 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,981 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,981 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:21:35,984 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 03:21:36,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 03:21:36,020 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:21:36,020 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:21:36,020 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:21:36,020 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:21:36,020 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:21:36,020 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:21:36,020 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:21:36,020 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:21:36,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 23 transitions, 51 flow [2021-03-26 03:21:36,046 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-03-26 03:21:36,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:21:36,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 1/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2021-03-26 03:21:36,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 23 transitions, 51 flow [2021-03-26 03:21:36,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 22 transitions, 47 flow [2021-03-26 03:21:36,053 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:21:36,062 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 22 transitions, 47 flow [2021-03-26 03:21:36,065 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 22 transitions, 47 flow [2021-03-26 03:21:36,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 22 transitions, 47 flow [2021-03-26 03:21:36,074 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-03-26 03:21:36,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:21:36,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 1/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2021-03-26 03:21:36,076 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-26 03:21:36,653 INFO L154 LiptonReduction]: Checked pairs total: 34 [2021-03-26 03:21:36,653 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-26 03:21:36,655 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 603 [2021-03-26 03:21:36,663 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-26 03:21:36,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:21:36,663 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:21:36,664 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 03:21:36,664 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:21:36,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:21:36,669 INFO L82 PathProgramCache]: Analyzing trace with hash 92723121, now seen corresponding path program 1 times [2021-03-26 03:21:36,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:21:36,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704715811] [2021-03-26 03:21:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:21:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:21:36,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:21:36,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:21:36,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:21:36,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:21:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:21:36,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704715811] [2021-03-26 03:21:36,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:21:36,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 03:21:36,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753139111] [2021-03-26 03:21:36,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:21:36,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:21:36,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:21:36,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:21:36,821 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 36 [2021-03-26 03:21:36,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 23 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:36,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:21:36,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 36 [2021-03-26 03:21:36,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:21:36,845 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-26 03:21:36,845 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:21:36,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 12 events. 1/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 13. Up to 5 conditions per place. [2021-03-26 03:21:36,847 INFO L132 encePairwiseOnDemand]: 33/36 looper letters, 1 selfloop transitions, 2 changer transitions 4/11 dead transitions. [2021-03-26 03:21:36,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 35 flow [2021-03-26 03:21:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:21:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:21:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2021-03-26 03:21:36,857 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-26 03:21:36,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2021-03-26 03:21:36,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2021-03-26 03:21:36,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:21:36,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2021-03-26 03:21:36,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:36,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:36,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:36,868 INFO L185 Difference]: Start difference. First operand has 14 places, 10 transitions, 23 flow. Second operand 3 states and 81 transitions. [2021-03-26 03:21:36,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 35 flow [2021-03-26 03:21:36,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 11 transitions, 34 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:21:36,872 INFO L241 Difference]: Finished difference. Result has 16 places, 7 transitions, 24 flow [2021-03-26 03:21:36,874 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=16, PETRI_TRANSITIONS=7} [2021-03-26 03:21:36,874 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 2 predicate places. [2021-03-26 03:21:36,875 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:21:36,875 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 7 transitions, 24 flow [2021-03-26 03:21:36,876 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 7 transitions, 24 flow [2021-03-26 03:21:36,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 7 transitions, 24 flow [2021-03-26 03:21:36,878 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-26 03:21:36,878 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 03:21:36,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 7 events. 0/7 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 03:21:36,879 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 03:21:37,370 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:21:37,370 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 03:21:37,373 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 498 [2021-03-26 03:21:37,374 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 4 transitions, 18 flow [2021-03-26 03:21:37,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:37,375 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:21:37,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:21:37,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:21:37,375 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:21:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:21:37,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1087408957, now seen corresponding path program 1 times [2021-03-26 03:21:37,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:21:37,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859051156] [2021-03-26 03:21:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:21:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:21:37,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:21:37,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:21:37,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:21:37,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:21:37,411 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-03-26 03:21:37,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:21:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:21:37,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859051156] [2021-03-26 03:21:37,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:21:37,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:21:37,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423571411] [2021-03-26 03:21:37,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 03:21:37,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:21:37,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 03:21:37,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 03:21:37,421 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 39 [2021-03-26 03:21:37,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 4 transitions, 18 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:37,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:21:37,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 39 [2021-03-26 03:21:37,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:21:37,445 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-26 03:21:37,445 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 03:21:37,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 3 events. 0/3 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/4 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 03:21:37,445 INFO L132 encePairwiseOnDemand]: 37/39 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2021-03-26 03:21:37,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 3 transitions, 18 flow [2021-03-26 03:21:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:21:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:21:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2021-03-26 03:21:37,447 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-26 03:21:37,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2021-03-26 03:21:37,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2021-03-26 03:21:37,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:21:37,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2021-03-26 03:21:37,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:37,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:37,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:37,449 INFO L185 Difference]: Start difference. First operand has 10 places, 4 transitions, 18 flow. Second operand 3 states and 69 transitions. [2021-03-26 03:21:37,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 3 transitions, 18 flow [2021-03-26 03:21:37,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 8 places, 3 transitions, 12 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 03:21:37,450 INFO L241 Difference]: Finished difference. Result has 8 places, 0 transitions, 0 flow [2021-03-26 03:21:37,450 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=8, PETRI_TRANSITIONS=0} [2021-03-26 03:21:37,451 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -6 predicate places. [2021-03-26 03:21:37,451 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:21:37,451 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 8 places, 0 transitions, 0 flow [2021-03-26 03:21:37,452 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 8 places, 0 transitions, 0 flow [2021-03-26 03:21:37,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 03:21:37,452 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 03:21:37,452 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:21:37,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 03:21:37,452 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 03:21:37,452 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:21:37,452 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:21:37,452 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 03:21:37,453 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 03:21:37,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:21:37,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:21:37,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 03:21:37 BasicIcfg [2021-03-26 03:21:37,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 03:21:37,458 INFO L168 Benchmark]: Toolchain (without parser) took 2083.95 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 235.2 MB in the beginning and 275.8 MB in the end (delta: -40.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.0 GB. [2021-03-26 03:21:37,459 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:21:37,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.46 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 234.8 MB in the beginning and 335.7 MB in the end (delta: -100.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-26 03:21:37,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.83 ms. Allocated memory is still 352.3 MB. Free memory was 335.7 MB in the beginning and 334.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 03:21:37,460 INFO L168 Benchmark]: Boogie Preprocessor took 21.57 ms. Allocated memory is still 352.3 MB. Free memory was 334.4 MB in the beginning and 333.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 03:21:37,461 INFO L168 Benchmark]: RCFGBuilder took 296.76 ms. Allocated memory is still 352.3 MB. Free memory was 333.3 MB in the beginning and 320.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 03:21:37,461 INFO L168 Benchmark]: TraceAbstraction took 1513.00 ms. Allocated memory is still 352.3 MB. Free memory was 319.5 MB in the beginning and 275.8 MB in the end (delta: 43.8 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.0 GB. [2021-03-26 03:21:37,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 219.46 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 234.8 MB in the beginning and 335.7 MB in the end (delta: -100.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.83 ms. Allocated memory is still 352.3 MB. Free memory was 335.7 MB in the beginning and 334.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.57 ms. Allocated memory is still 352.3 MB. Free memory was 334.4 MB in the beginning and 333.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 296.76 ms. Allocated memory is still 352.3 MB. Free memory was 333.3 MB in the beginning and 320.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1513.00 ms. Allocated memory is still 352.3 MB. Free memory was 319.5 MB in the beginning and 275.8 MB in the end (delta: 43.8 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 587.9ms, 25 PlacesBefore, 14 PlacesAfterwards, 22 TransitionsBefore, 10 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 3 FixpointIterations, 6 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 13 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 26, unknown conditional: 26, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 1, Positive conditional cache size: 1, Positive unconditional cache size: 0, Negative cache size: 1, Negative conditional cache size: 1, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 497.3ms, 16 PlacesBefore, 10 PlacesAfterwards, 7 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 8 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1438.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 88.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 639.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, InterpolantAutomatonStates: 6, 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: 4.8ms SsaConstructionTime, 21.8ms SatisfiabilityAnalysisTime, 79.6ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...