/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:27:15,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:27:15,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:27:15,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:27:15,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:27:15,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:27:15,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:27:15,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:27:15,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:27:15,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:27:15,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:27:15,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:27:15,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:27:15,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:27:15,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:27:15,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:27:15,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:27:15,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:27:15,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:27:15,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:27:15,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:27:15,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:27:15,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:27:15,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:27:15,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 00:27:15,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 00:27:15,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 00:27:15,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 00:27:15,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 00:27:15,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 00:27:15,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 00:27:15,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 00:27:15,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 00:27:15,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 00:27:15,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 00:27:15,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 00:27:15,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 00:27:15,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 00:27:15,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:27:15,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:27:15,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:27:15,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 00:27:15,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:27:15,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:27:15,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:27:15,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:27:15,496 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:27:15,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:27:15,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:27:15,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:27:15,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:27:15,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:27:15,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:27:15,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:27:15,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:27:15,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:27:15,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:27:15,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:27:15,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:27:15,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:27:15,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:27:15,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:27:15,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:27:15,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:27:15,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:27:15,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:27:15,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:27:15,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:27:15,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:27:15,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:27:15,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:27:15,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:27:15,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:27:15,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:27:15,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:27:15,795 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:27:15,796 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2020-10-16 00:27:15,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e0f89d8/a908f3203f38418d87c2482f550c38bf/FLAG9e6e6f98c [2020-10-16 00:27:16,376 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:27:16,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2020-10-16 00:27:16,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e0f89d8/a908f3203f38418d87c2482f550c38bf/FLAG9e6e6f98c [2020-10-16 00:27:16,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e0f89d8/a908f3203f38418d87c2482f550c38bf [2020-10-16 00:27:16,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:27:16,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:27:16,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:27:16,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:27:16,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:27:16,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:27:16" (1/1) ... [2020-10-16 00:27:16,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87aaa20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:16, skipping insertion in model container [2020-10-16 00:27:16,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:27:16" (1/1) ... [2020-10-16 00:27:16,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:27:16,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:27:17,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:27:17,196 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:27:17,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:27:17,348 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:27:17,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17 WrapperNode [2020-10-16 00:27:17,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:27:17,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:27:17,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:27:17,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:27:17,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:27:17,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:27:17,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:27:17,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:27:17,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... [2020-10-16 00:27:17,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:27:17,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:27:17,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:27:17,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:27:17,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:27:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 00:27:17,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 00:27:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:27:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:27:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:27:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:27:17,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:27:17,494 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 00:27:17,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:27:17,935 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 00:27:17,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:27:17 BoogieIcfgContainer [2020-10-16 00:27:17,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:27:17,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:27:17,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:27:17,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:27:17,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:27:16" (1/3) ... [2020-10-16 00:27:17,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9fa1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:27:17, skipping insertion in model container [2020-10-16 00:27:17,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:17" (2/3) ... [2020-10-16 00:27:17,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9fa1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:27:17, skipping insertion in model container [2020-10-16 00:27:17,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:27:17" (3/3) ... [2020-10-16 00:27:17,949 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2020-10-16 00:27:17,961 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:27:17,971 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 00:27:17,972 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:27:17,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:17,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:18,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:18,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:18,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:18,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:18,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 00:27:18,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:27:18,034 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:27:18,034 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:27:18,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:27:18,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:27:18,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:27:18,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:27:18,034 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:27:18,044 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 83 flow [2020-10-16 00:27:18,073 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2020-10-16 00:27:18,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:18,080 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2020-10-16 00:27:18,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 83 flow [2020-10-16 00:27:18,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 57 flow [2020-10-16 00:27:18,088 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:27:18,090 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 27 transitions, 57 flow [2020-10-16 00:27:18,093 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 27 transitions, 57 flow [2020-10-16 00:27:18,094 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 31 places, 27 transitions, 57 flow [2020-10-16 00:27:18,105 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2020-10-16 00:27:18,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:18,105 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 00:27:18,106 INFO L117 LiptonReduction]: Number of co-enabled transitions 108 [2020-10-16 00:27:18,886 INFO L132 LiptonReduction]: Checked pairs total: 122 [2020-10-16 00:27:18,887 INFO L134 LiptonReduction]: Total number of compositions: 21 [2020-10-16 00:27:18,890 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 804 [2020-10-16 00:27:18,896 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2020-10-16 00:27:18,896 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:18,897 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:18,898 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 00:27:18,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:18,904 INFO L82 PathProgramCache]: Analyzing trace with hash 201682295, now seen corresponding path program 1 times [2020-10-16 00:27:18,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:18,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082381423] [2020-10-16 00:27:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:19,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082381423] [2020-10-16 00:27:19,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:19,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:27:19,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287789205] [2020-10-16 00:27:19,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:27:19,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:19,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:27:19,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:27:19,133 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 60 [2020-10-16 00:27:19,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 6 transitions, 15 flow. Second operand 3 states. [2020-10-16 00:27:19,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:19,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 60 [2020-10-16 00:27:19,137 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:19,161 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2020-10-16 00:27:19,161 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:19,161 INFO L80 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/10 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 00:27:19,163 INFO L132 encePairwiseOnDemand]: 56/60 looper letters, 2 selfloop transitions, 2 changer transitions 1/7 dead transitions. [2020-10-16 00:27:19,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 27 flow [2020-10-16 00:27:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:27:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:27:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2020-10-16 00:27:19,178 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2020-10-16 00:27:19,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2020-10-16 00:27:19,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2020-10-16 00:27:19,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:19,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2020-10-16 00:27:19,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:27:19,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:27:19,192 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:27:19,194 INFO L185 Difference]: Start difference. First operand has 10 places, 6 transitions, 15 flow. Second operand 3 states and 138 transitions. [2020-10-16 00:27:19,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 27 flow [2020-10-16 00:27:19,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:27:19,200 INFO L241 Difference]: Finished difference. Result has 13 places, 6 transitions, 26 flow [2020-10-16 00:27:19,203 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=13, PETRI_TRANSITIONS=6} [2020-10-16 00:27:19,204 INFO L342 CegarLoopForPetriNet]: 10 programPoint places, 3 predicate places. [2020-10-16 00:27:19,204 INFO L481 AbstractCegarLoop]: Abstraction has has 13 places, 6 transitions, 26 flow [2020-10-16 00:27:19,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:27:19,204 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:19,205 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 00:27:19,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:27:19,205 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:19,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1957184360, now seen corresponding path program 1 times [2020-10-16 00:27:19,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:19,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854908645] [2020-10-16 00:27:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:19,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854908645] [2020-10-16 00:27:19,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:19,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:27:19,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319416108] [2020-10-16 00:27:19,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 00:27:19,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:19,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 00:27:19,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 00:27:19,269 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 60 [2020-10-16 00:27:19,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 6 transitions, 26 flow. Second operand 4 states. [2020-10-16 00:27:19,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:19,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 60 [2020-10-16 00:27:19,270 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:19,280 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2020-10-16 00:27:19,280 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2020-10-16 00:27:19,281 INFO L80 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 6 events. 0/6 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 00:27:19,281 INFO L132 encePairwiseOnDemand]: 57/60 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2020-10-16 00:27:19,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 5 transitions, 28 flow [2020-10-16 00:27:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 00:27:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 00:27:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2020-10-16 00:27:19,284 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2020-10-16 00:27:19,285 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 188 transitions. [2020-10-16 00:27:19,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 188 transitions. [2020-10-16 00:27:19,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:19,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 188 transitions. [2020-10-16 00:27:19,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 00:27:19,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 00:27:19,288 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 00:27:19,288 INFO L185 Difference]: Start difference. First operand has 13 places, 6 transitions, 26 flow. Second operand 4 states and 188 transitions. [2020-10-16 00:27:19,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 5 transitions, 28 flow [2020-10-16 00:27:19,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 5 transitions, 22 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 00:27:19,290 INFO L241 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2020-10-16 00:27:19,290 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2020-10-16 00:27:19,291 INFO L342 CegarLoopForPetriNet]: 10 programPoint places, 2 predicate places. [2020-10-16 00:27:19,291 INFO L481 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2020-10-16 00:27:19,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 00:27:19,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:27:19,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:27:19 BasicIcfg [2020-10-16 00:27:19,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:27:19,298 INFO L168 Benchmark]: Toolchain (without parser) took 2611.58 ms. Allocated memory was 248.5 MB in the beginning and 353.4 MB in the end (delta: 104.9 MB). Free memory was 204.3 MB in the beginning and 252.6 MB in the end (delta: -48.4 MB). Peak memory consumption was 56.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:19,299 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:27:19,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.99 ms. Allocated memory was 248.5 MB in the beginning and 306.7 MB in the end (delta: 58.2 MB). Free memory was 204.3 MB in the beginning and 260.0 MB in the end (delta: -55.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:19,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.45 ms. Allocated memory is still 306.7 MB. Free memory was 260.0 MB in the beginning and 257.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:19,302 INFO L168 Benchmark]: Boogie Preprocessor took 28.50 ms. Allocated memory is still 306.7 MB. Free memory was 257.5 MB in the beginning and 255.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:19,303 INFO L168 Benchmark]: RCFGBuilder took 514.62 ms. Allocated memory is still 306.7 MB. Free memory was 255.0 MB in the beginning and 228.1 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:19,304 INFO L168 Benchmark]: TraceAbstraction took 1354.67 ms. Allocated memory was 306.7 MB in the beginning and 353.4 MB in the end (delta: 46.7 MB). Free memory was 228.1 MB in the beginning and 252.6 MB in the end (delta: -24.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:19,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 662.99 ms. Allocated memory was 248.5 MB in the beginning and 306.7 MB in the end (delta: 58.2 MB). Free memory was 204.3 MB in the beginning and 260.0 MB in the end (delta: -55.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.45 ms. Allocated memory is still 306.7 MB. Free memory was 260.0 MB in the beginning and 257.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.50 ms. Allocated memory is still 306.7 MB. Free memory was 257.5 MB in the beginning and 255.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 514.62 ms. Allocated memory is still 306.7 MB. Free memory was 255.0 MB in the beginning and 228.1 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1354.67 ms. Allocated memory was 306.7 MB in the beginning and 353.4 MB in the end (delta: 46.7 MB). Free memory was 228.1 MB in the beginning and 252.6 MB in the end (delta: -24.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 62 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 4 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 31 PlacesBefore, 10 PlacesAfterwards, 27 TransitionsBefore, 6 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 21 TotalNumberOfCompositions, 122 MoverChecksTotal - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 5 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...