/usr/bin/java -Xmx8000000000 -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-FA-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 15:13:04,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 15:13:04,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 15:13:04,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 15:13:04,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 15:13:04,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 15:13:04,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 15:13:04,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 15:13:04,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 15:13:04,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 15:13:04,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 15:13:04,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 15:13:04,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 15:13:04,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 15:13:04,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 15:13:04,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 15:13:04,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 15:13:04,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 15:13:04,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 15:13:04,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 15:13:04,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 15:13:04,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 15:13:04,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 15:13:04,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 15:13:04,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 15:13:04,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 15:13:04,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 15:13:04,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 15:13:04,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 15:13:04,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 15:13:04,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 15:13:04,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 15:13:04,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 15:13:04,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 15:13:04,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 15:13:04,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 15:13:04,349 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-FA-SemanticLbe-MCR.epf [2019-12-27 15:13:04,366 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 15:13:04,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 15:13:04,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 15:13:04,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 15:13:04,370 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 15:13:04,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 15:13:04,371 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 15:13:04,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 15:13:04,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 15:13:04,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 15:13:04,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 15:13:04,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 15:13:04,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 15:13:04,372 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 15:13:04,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 15:13:04,372 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 15:13:04,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 15:13:04,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 15:13:04,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 15:13:04,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 15:13:04,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 15:13:04,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 15:13:04,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 15:13:04,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 15:13:04,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 15:13:04,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 15:13:04,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 15:13:04,376 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 15:13:04,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 15:13:04,376 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 15:13:04,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 15:13:04,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 15:13:04,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 15:13:04,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 15:13:04,664 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 15:13:04,665 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 15:13:04,666 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2019-12-27 15:13:04,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e41cd965/eae3e08c14ef4e8997063e2642c7ac58/FLAG6c028993b [2019-12-27 15:13:05,272 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 15:13:05,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2019-12-27 15:13:05,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e41cd965/eae3e08c14ef4e8997063e2642c7ac58/FLAG6c028993b [2019-12-27 15:13:05,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e41cd965/eae3e08c14ef4e8997063e2642c7ac58 [2019-12-27 15:13:05,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 15:13:05,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 15:13:05,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 15:13:05,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 15:13:05,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 15:13:05,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 03:13:05" (1/1) ... [2019-12-27 15:13:05,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cdc2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:05, skipping insertion in model container [2019-12-27 15:13:05,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 03:13:05" (1/1) ... [2019-12-27 15:13:05,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 15:13:05,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 15:13:06,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 15:13:06,141 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 15:13:06,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 15:13:06,283 INFO L208 MainTranslator]: Completed translation [2019-12-27 15:13:06,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06 WrapperNode [2019-12-27 15:13:06,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 15:13:06,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 15:13:06,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 15:13:06,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 15:13:06,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 15:13:06,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 15:13:06,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 15:13:06,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 15:13:06,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (1/1) ... [2019-12-27 15:13:06,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 15:13:06,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 15:13:06,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 15:13:06,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 15:13:06,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (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 [2019-12-27 15:13:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 15:13:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-12-27 15:13:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-12-27 15:13:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-27 15:13:06,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-27 15:13:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 15:13:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 15:13:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 15:13:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 15:13:06,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 15:13:06,451 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 15:13:06,884 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 15:13:06,884 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 15:13:06,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 03:13:06 BoogieIcfgContainer [2019-12-27 15:13:06,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 15:13:06,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 15:13:06,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 15:13:06,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 15:13:06,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 03:13:05" (1/3) ... [2019-12-27 15:13:06,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cdc867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 03:13:06, skipping insertion in model container [2019-12-27 15:13:06,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 03:13:06" (2/3) ... [2019-12-27 15:13:06,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cdc867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 03:13:06, skipping insertion in model container [2019-12-27 15:13:06,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 03:13:06" (3/3) ... [2019-12-27 15:13:06,894 INFO L109 eAbstractionObserver]: Analyzing ICFG peterson.i [2019-12-27 15:13:06,905 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 15:13:06,906 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 15:13:06,912 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-27 15:13:06,913 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 15:13:06,939 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,939 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,939 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,940 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,941 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,941 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,942 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,942 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,943 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,943 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,948 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,948 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,949 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,949 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,955 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,955 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,955 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,956 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 15:13:06,977 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-27 15:13:06,994 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 15:13:06,994 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 15:13:06,994 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 15:13:06,995 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 15:13:06,995 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 15:13:06,995 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 15:13:06,995 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 15:13:06,995 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 15:13:07,010 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions [2019-12-27 15:13:07,012 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions [2019-12-27 15:13:07,052 INFO L132 PetriNetUnfolder]: 7/62 cut-off events. [2019-12-27 15:13:07,052 INFO L133 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2019-12-27 15:13:07,058 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2019-12-27 15:13:07,062 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions [2019-12-27 15:13:07,082 INFO L132 PetriNetUnfolder]: 7/62 cut-off events. [2019-12-27 15:13:07,082 INFO L133 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2019-12-27 15:13:07,083 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2019-12-27 15:13:07,086 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 756 [2019-12-27 15:13:07,087 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 15:13:08,078 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-12-27 15:13:08,151 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1396 [2019-12-27 15:13:08,151 INFO L214 etLargeBlockEncoding]: Total number of compositions: 33 [2019-12-27 15:13:08,155 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 34 transitions [2019-12-27 15:13:08,184 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 197 states. [2019-12-27 15:13:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2019-12-27 15:13:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 15:13:08,193 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:13:08,194 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 15:13:08,194 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:13:08,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:13:08,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1379963486, now seen corresponding path program 1 times [2019-12-27 15:13:08,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:13:08,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970646133] [2019-12-27 15:13:08,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:13:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:13:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:13:08,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970646133] [2019-12-27 15:13:08,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:13:08,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:13:08,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [341412640] [2019-12-27 15:13:08,374 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:13:08,382 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:13:08,412 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 7 states and 6 transitions. [2019-12-27 15:13:08,414 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:13:08,420 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:13:08,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 15:13:08,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:13:08,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 15:13:08,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 15:13:08,439 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2019-12-27 15:13:08,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:13:08,468 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2019-12-27 15:13:08,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 15:13:08,470 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-27 15:13:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:13:08,494 INFO L225 Difference]: With dead ends: 197 [2019-12-27 15:13:08,494 INFO L226 Difference]: Without dead ends: 174 [2019-12-27 15:13:08,496 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 15:13:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-12-27 15:13:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2019-12-27 15:13:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-12-27 15:13:08,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 406 transitions. [2019-12-27 15:13:08,569 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 406 transitions. Word has length 6 [2019-12-27 15:13:08,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:13:08,569 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 406 transitions. [2019-12-27 15:13:08,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 15:13:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2019-12-27 15:13:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 15:13:08,571 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:13:08,572 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:13:08,572 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:13:08,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:13:08,572 INFO L82 PathProgramCache]: Analyzing trace with hash 170777462, now seen corresponding path program 1 times [2019-12-27 15:13:08,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:13:08,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864220830] [2019-12-27 15:13:08,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:13:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:13:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:13:08,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864220830] [2019-12-27 15:13:08,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:13:08,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:13:08,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1770941660] [2019-12-27 15:13:08,648 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:13:08,649 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:13:08,650 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 8 states and 7 transitions. [2019-12-27 15:13:08,650 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:13:08,650 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:13:08,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:13:08,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:13:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:13:08,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:13:08,653 INFO L87 Difference]: Start difference. First operand 174 states and 406 transitions. Second operand 3 states. [2019-12-27 15:13:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:13:08,684 INFO L93 Difference]: Finished difference Result 189 states and 416 transitions. [2019-12-27 15:13:08,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:13:08,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-27 15:13:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:13:08,687 INFO L225 Difference]: With dead ends: 189 [2019-12-27 15:13:08,688 INFO L226 Difference]: Without dead ends: 154 [2019-12-27 15:13:08,689 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:13:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-12-27 15:13:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2019-12-27 15:13:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-12-27 15:13:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 317 transitions. [2019-12-27 15:13:08,710 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 317 transitions. Word has length 7 [2019-12-27 15:13:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:13:08,711 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 317 transitions. [2019-12-27 15:13:08,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:13:08,711 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 317 transitions. [2019-12-27 15:13:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 15:13:08,713 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:13:08,714 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:13:08,714 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:13:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:13:08,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1618546552, now seen corresponding path program 1 times [2019-12-27 15:13:08,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:13:08,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051792807] [2019-12-27 15:13:08,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:13:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:13:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:13:08,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051792807] [2019-12-27 15:13:08,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:13:08,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 15:13:08,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [184473027] [2019-12-27 15:13:08,810 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:13:08,811 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:13:08,812 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 15:13:08,812 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:13:08,813 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 15:13:08,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 15:13:08,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:13:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 15:13:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:13:08,814 INFO L87 Difference]: Start difference. First operand 140 states and 317 transitions. Second operand 3 states. [2019-12-27 15:13:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:13:08,841 INFO L93 Difference]: Finished difference Result 135 states and 290 transitions. [2019-12-27 15:13:08,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 15:13:08,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 15:13:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:13:08,843 INFO L225 Difference]: With dead ends: 135 [2019-12-27 15:13:08,844 INFO L226 Difference]: Without dead ends: 96 [2019-12-27 15:13:08,844 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 15:13:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-12-27 15:13:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2019-12-27 15:13:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-12-27 15:13:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 204 transitions. [2019-12-27 15:13:08,862 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 204 transitions. Word has length 9 [2019-12-27 15:13:08,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:13:08,864 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 204 transitions. [2019-12-27 15:13:08,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 15:13:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2019-12-27 15:13:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 15:13:08,868 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:13:08,869 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:13:08,869 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:13:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:13:08,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1612301587, now seen corresponding path program 1 times [2019-12-27 15:13:08,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:13:08,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261752566] [2019-12-27 15:13:08,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:13:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:13:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:13:08,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261752566] [2019-12-27 15:13:08,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:13:08,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 15:13:08,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [140373686] [2019-12-27 15:13:08,974 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:13:08,975 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:13:08,978 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 26 states and 36 transitions. [2019-12-27 15:13:08,979 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:13:08,983 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 15:13:08,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 15:13:08,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:13:08,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 15:13:08,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 15:13:08,985 INFO L87 Difference]: Start difference. First operand 96 states and 204 transitions. Second operand 4 states. [2019-12-27 15:13:09,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:13:09,019 INFO L93 Difference]: Finished difference Result 106 states and 227 transitions. [2019-12-27 15:13:09,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 15:13:09,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-27 15:13:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:13:09,020 INFO L225 Difference]: With dead ends: 106 [2019-12-27 15:13:09,021 INFO L226 Difference]: Without dead ends: 82 [2019-12-27 15:13:09,021 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 15:13:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-12-27 15:13:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-12-27 15:13:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-27 15:13:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2019-12-27 15:13:09,028 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 13 [2019-12-27 15:13:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:13:09,028 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2019-12-27 15:13:09,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 15:13:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2019-12-27 15:13:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 15:13:09,029 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 15:13:09,030 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 15:13:09,030 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 15:13:09,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 15:13:09,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1894970123, now seen corresponding path program 2 times [2019-12-27 15:13:09,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 15:13:09,031 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162711512] [2019-12-27 15:13:09,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 15:13:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 15:13:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 15:13:09,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162711512] [2019-12-27 15:13:09,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 15:13:09,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 15:13:09,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1151589416] [2019-12-27 15:13:09,094 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 15:13:09,099 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 15:13:09,101 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 28 states and 37 transitions. [2019-12-27 15:13:09,101 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 15:13:09,105 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 15:13:09,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 15:13:09,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 15:13:09,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 15:13:09,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 15:13:09,106 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 4 states. [2019-12-27 15:13:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 15:13:09,129 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2019-12-27 15:13:09,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 15:13:09,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-27 15:13:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 15:13:09,130 INFO L225 Difference]: With dead ends: 36 [2019-12-27 15:13:09,130 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 15:13:09,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-27 15:13:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 15:13:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 15:13:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 15:13:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 15:13:09,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-12-27 15:13:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 15:13:09,132 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 15:13:09,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 15:13:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 15:13:09,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 15:13:09,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 03:13:09 BasicIcfg [2019-12-27 15:13:09,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 15:13:09,137 INFO L168 Benchmark]: Toolchain (without parser) took 3555.17 ms. Allocated memory was 138.4 MB in the beginning and 248.0 MB in the end (delta: 109.6 MB). Free memory was 100.2 MB in the beginning and 210.1 MB in the end (delta: -109.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 15:13:09,138 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-27 15:13:09,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.85 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 100.0 MB in the beginning and 162.4 MB in the end (delta: -62.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-12-27 15:13:09,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.02 ms. Allocated memory is still 203.4 MB. Free memory was 162.4 MB in the beginning and 160.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 15:13:09,141 INFO L168 Benchmark]: Boogie Preprocessor took 38.39 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 159.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 15:13:09,142 INFO L168 Benchmark]: RCFGBuilder took 505.03 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 139.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-12-27 15:13:09,142 INFO L168 Benchmark]: TraceAbstraction took 2248.24 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 139.1 MB in the beginning and 210.1 MB in the end (delta: -71.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 15:13:09,147 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.85 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 100.0 MB in the beginning and 162.4 MB in the end (delta: -62.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.02 ms. Allocated memory is still 203.4 MB. Free memory was 162.4 MB in the beginning and 160.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.39 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 159.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.03 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 139.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2248.24 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 139.1 MB in the beginning and 210.1 MB in the end (delta: -71.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 61 ProgramPointsBefore, 33 ProgramPointsAfterwards, 62 TransitionsBefore, 34 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 330 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 1396 CheckedPairsTotal, 33 TotalNumberOfCompositions - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 57 SDslu, 60 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...