/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-VariableLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 19:21:55,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 19:21:55,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 19:21:55,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 19:21:55,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 19:21:55,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 19:21:55,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 19:21:55,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 19:21:55,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 19:21:55,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 19:21:55,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 19:21:55,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 19:21:55,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 19:21:55,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 19:21:55,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 19:21:55,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 19:21:55,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 19:21:55,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 19:21:55,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 19:21:55,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 19:21:55,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 19:21:55,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 19:21:55,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 19:21:55,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 19:21:55,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 19:21:55,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 19:21:55,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 19:21:55,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 19:21:55,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 19:21:55,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 19:21:55,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 19:21:55,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 19:21:55,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 19:21:55,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 19:21:55,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 19:21:55,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 19:21:55,330 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-VariableLbe-MCR.epf [2019-12-27 19:21:55,345 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 19:21:55,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 19:21:55,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 19:21:55,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 19:21:55,347 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 19:21:55,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 19:21:55,348 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 19:21:55,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 19:21:55,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 19:21:55,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 19:21:55,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 19:21:55,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 19:21:55,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 19:21:55,349 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 19:21:55,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 19:21:55,349 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 19:21:55,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 19:21:55,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 19:21:55,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 19:21:55,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 19:21:55,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 19:21:55,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 19:21:55,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 19:21:55,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 19:21:55,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 19:21:55,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 19:21:55,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 19:21:55,352 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 19:21:55,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 19:21:55,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 19:21:55,352 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 19:21:55,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 19:21:55,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 19:21:55,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 19:21:55,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 19:21:55,669 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 19:21:55,670 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 19:21:55,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2019-12-27 19:21:55,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e33ac9de/85623ed8ae9a4d018abc90d016b4074c/FLAGa988726be [2019-12-27 19:21:56,245 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 19:21:56,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2019-12-27 19:21:56,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e33ac9de/85623ed8ae9a4d018abc90d016b4074c/FLAGa988726be [2019-12-27 19:21:56,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e33ac9de/85623ed8ae9a4d018abc90d016b4074c [2019-12-27 19:21:56,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 19:21:56,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 19:21:56,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 19:21:56,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 19:21:56,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 19:21:56,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:21:56" (1/1) ... [2019-12-27 19:21:56,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be2db7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:56, skipping insertion in model container [2019-12-27 19:21:56,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:21:56" (1/1) ... [2019-12-27 19:21:56,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 19:21:56,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 19:21:57,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:21:57,133 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 19:21:57,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:21:57,246 INFO L208 MainTranslator]: Completed translation [2019-12-27 19:21:57,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57 WrapperNode [2019-12-27 19:21:57,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 19:21:57,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 19:21:57,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 19:21:57,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 19:21:57,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 19:21:57,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 19:21:57,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 19:21:57,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 19:21:57,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (1/1) ... [2019-12-27 19:21:57,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 19:21:57,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 19:21:57,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 19:21:57,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 19:21:57,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (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 19:21:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 19:21:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 19:21:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2019-12-27 19:21:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2019-12-27 19:21:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 19:21:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 19:21:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 19:21:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 19:21:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2019-12-27 19:21:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2019-12-27 19:21:57,397 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 19:21:57,534 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2019-12-27 19:21:57,539 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_read_lock_returnLabel [2019-12-27 19:21:57,764 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2019-12-27 19:21:57,774 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 19:21:57,774 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-27 19:21:57,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:21:57 BoogieIcfgContainer [2019-12-27 19:21:57,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 19:21:57,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 19:21:57,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 19:21:57,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 19:21:57,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 07:21:56" (1/3) ... [2019-12-27 19:21:57,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecc6a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:21:57, skipping insertion in model container [2019-12-27 19:21:57,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:21:57" (2/3) ... [2019-12-27 19:21:57,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecc6a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:21:57, skipping insertion in model container [2019-12-27 19:21:57,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:21:57" (3/3) ... [2019-12-27 19:21:57,784 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2019-12-27 19:21:57,793 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 19:21:57,793 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 19:21:57,800 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 19:21:57,802 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 19:21:57,845 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,845 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,847 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,847 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,848 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,848 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,849 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,849 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,850 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,851 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,851 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,851 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,851 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,852 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,852 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,852 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,853 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,854 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,855 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,855 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,855 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,856 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,857 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,857 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,858 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,858 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,859 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,859 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,860 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,860 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,864 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,865 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,865 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,865 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,866 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,885 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,886 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,886 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,886 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,890 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,891 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,891 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,891 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,891 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,894 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,894 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,895 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,895 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:21:57,943 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-27 19:21:57,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:21:57,959 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:21:57,959 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:21:57,960 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:21:57,960 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:21:57,960 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:21:57,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:21:57,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:21:57,976 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 96 transitions [2019-12-27 19:21:57,978 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 96 transitions [2019-12-27 19:21:58,052 INFO L132 PetriNetUnfolder]: 19/130 cut-off events. [2019-12-27 19:21:58,052 INFO L133 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2019-12-27 19:21:58,061 INFO L76 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 130 events. 19/130 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 318 event pairs. 0/126 useless extension candidates. Maximal degree in co-relation 87. Up to 12 conditions per place. [2019-12-27 19:21:58,067 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 96 transitions [2019-12-27 19:21:58,140 INFO L132 PetriNetUnfolder]: 19/130 cut-off events. [2019-12-27 19:21:58,140 INFO L133 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2019-12-27 19:21:58,146 INFO L76 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 130 events. 19/130 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 318 event pairs. 0/126 useless extension candidates. Maximal degree in co-relation 87. Up to 12 conditions per place. [2019-12-27 19:21:58,155 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2072 [2019-12-27 19:21:58,157 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 19:21:58,777 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-12-27 19:21:59,430 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-12-27 19:21:59,546 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-12-27 19:21:59,735 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-12-27 19:21:59,853 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6304 [2019-12-27 19:21:59,853 INFO L214 etLargeBlockEncoding]: Total number of compositions: 41 [2019-12-27 19:21:59,857 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 55 transitions [2019-12-27 19:22:00,184 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4306 states. [2019-12-27 19:22:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states. [2019-12-27 19:22:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 19:22:00,196 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:22:00,197 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:22:00,198 INFO L410 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 19:22:00,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:22:00,205 INFO L82 PathProgramCache]: Analyzing trace with hash 2025569535, now seen corresponding path program 1 times [2019-12-27 19:22:00,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:22:00,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719683260] [2019-12-27 19:22:00,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:22:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:22:00,553 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 19:22:00,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719683260] [2019-12-27 19:22:00,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:22:00,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:22:00,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [694364453] [2019-12-27 19:22:00,556 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:22:00,564 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:22:00,579 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 19:22:00,579 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:22:00,584 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:22:00,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:22:00,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:22:00,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:22:00,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:22:00,607 INFO L87 Difference]: Start difference. First operand 4306 states. Second operand 4 states. [2019-12-27 19:22:00,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:22:00,915 INFO L93 Difference]: Finished difference Result 9727 states and 31398 transitions. [2019-12-27 19:22:00,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 19:22:00,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 19:22:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:22:01,021 INFO L225 Difference]: With dead ends: 9727 [2019-12-27 19:22:01,022 INFO L226 Difference]: Without dead ends: 7325 [2019-12-27 19:22:01,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 19:22:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2019-12-27 19:22:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 4376. [2019-12-27 19:22:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4376 states. [2019-12-27 19:22:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14751 transitions. [2019-12-27 19:22:01,365 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14751 transitions. Word has length 8 [2019-12-27 19:22:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:22:01,365 INFO L462 AbstractCegarLoop]: Abstraction has 4376 states and 14751 transitions. [2019-12-27 19:22:01,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:22:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14751 transitions. [2019-12-27 19:22:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 19:22:01,369 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:22:01,369 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:22:01,370 INFO L410 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 19:22:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:22:01,370 INFO L82 PathProgramCache]: Analyzing trace with hash 952094142, now seen corresponding path program 1 times [2019-12-27 19:22:01,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:22:01,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514681857] [2019-12-27 19:22:01,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:22:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:22:01,500 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 19:22:01,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514681857] [2019-12-27 19:22:01,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:22:01,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:22:01,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1749714987] [2019-12-27 19:22:01,501 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:22:01,502 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:22:01,504 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 14 states and 16 transitions. [2019-12-27 19:22:01,504 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:22:01,507 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 19:22:01,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:22:01,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:22:01,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:22:01,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:22:01,510 INFO L87 Difference]: Start difference. First operand 4376 states and 14751 transitions. Second operand 4 states. [2019-12-27 19:22:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:22:01,617 INFO L93 Difference]: Finished difference Result 6872 states and 20348 transitions. [2019-12-27 19:22:01,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 19:22:01,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 19:22:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:22:01,722 INFO L225 Difference]: With dead ends: 6872 [2019-12-27 19:22:01,722 INFO L226 Difference]: Without dead ends: 6776 [2019-12-27 19:22:01,723 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:22:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2019-12-27 19:22:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 4772. [2019-12-27 19:22:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4772 states. [2019-12-27 19:22:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 14625 transitions. [2019-12-27 19:22:01,892 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 14625 transitions. Word has length 10 [2019-12-27 19:22:01,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:22:01,893 INFO L462 AbstractCegarLoop]: Abstraction has 4772 states and 14625 transitions. [2019-12-27 19:22:01,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:22:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 14625 transitions. [2019-12-27 19:22:01,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 19:22:01,895 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:22:01,895 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:22:01,895 INFO L410 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 19:22:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:22:01,896 INFO L82 PathProgramCache]: Analyzing trace with hash -525587508, now seen corresponding path program 2 times [2019-12-27 19:22:01,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:22:01,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430834182] [2019-12-27 19:22:01,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:22:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:22:01,927 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 19:22:01,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430834182] [2019-12-27 19:22:01,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:22:01,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:22:01,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [261842872] [2019-12-27 19:22:01,928 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:22:01,929 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:22:01,930 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 14 states and 16 transitions. [2019-12-27 19:22:01,931 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:22:01,932 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 19:22:01,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:22:01,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:22:01,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:22:01,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:22:01,934 INFO L87 Difference]: Start difference. First operand 4772 states and 14625 transitions. Second operand 3 states. [2019-12-27 19:22:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:22:01,961 INFO L93 Difference]: Finished difference Result 2244 states and 5528 transitions. [2019-12-27 19:22:01,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:22:01,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-27 19:22:01,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:22:01,972 INFO L225 Difference]: With dead ends: 2244 [2019-12-27 19:22:01,972 INFO L226 Difference]: Without dead ends: 2180 [2019-12-27 19:22:01,973 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 19:22:01,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2019-12-27 19:22:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2019-12-27 19:22:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2019-12-27 19:22:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 5394 transitions. [2019-12-27 19:22:02,030 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 5394 transitions. Word has length 10 [2019-12-27 19:22:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:22:02,031 INFO L462 AbstractCegarLoop]: Abstraction has 2180 states and 5394 transitions. [2019-12-27 19:22:02,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:22:02,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 5394 transitions. [2019-12-27 19:22:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-27 19:22:02,032 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:22:02,032 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:22:02,032 INFO L410 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 19:22:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:22:02,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2052037428, now seen corresponding path program 1 times [2019-12-27 19:22:02,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:22:02,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910351813] [2019-12-27 19:22:02,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:22:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:22:02,088 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 19:22:02,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910351813] [2019-12-27 19:22:02,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:22:02,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:22:02,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1524233762] [2019-12-27 19:22:02,090 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:22:02,091 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:22:02,092 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 12 transitions. [2019-12-27 19:22:02,092 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:22:02,093 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:22:02,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:22:02,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:22:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:22:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:22:02,095 INFO L87 Difference]: Start difference. First operand 2180 states and 5394 transitions. Second operand 4 states. [2019-12-27 19:22:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:22:02,173 INFO L93 Difference]: Finished difference Result 2507 states and 6115 transitions. [2019-12-27 19:22:02,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 19:22:02,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-27 19:22:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:22:02,194 INFO L225 Difference]: With dead ends: 2507 [2019-12-27 19:22:02,194 INFO L226 Difference]: Without dead ends: 1814 [2019-12-27 19:22:02,195 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 19:22:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2019-12-27 19:22:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1440. [2019-12-27 19:22:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2019-12-27 19:22:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 3564 transitions. [2019-12-27 19:22:02,235 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 3564 transitions. Word has length 12 [2019-12-27 19:22:02,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:22:02,238 INFO L462 AbstractCegarLoop]: Abstraction has 1440 states and 3564 transitions. [2019-12-27 19:22:02,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:22:02,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 3564 transitions. [2019-12-27 19:22:02,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 19:22:02,242 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:22:02,242 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:22:02,242 INFO L410 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 19:22:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:22:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash -428981579, now seen corresponding path program 1 times [2019-12-27 19:22:02,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:22:02,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896016985] [2019-12-27 19:22:02,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:22:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:22:02,325 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 19:22:02,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896016985] [2019-12-27 19:22:02,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:22:02,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 19:22:02,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [475095196] [2019-12-27 19:22:02,327 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:22:02,329 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:22:02,334 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 43 states and 65 transitions. [2019-12-27 19:22:02,335 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:22:02,336 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 19:22:02,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 19:22:02,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:22:02,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 19:22:02,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 19:22:02,337 INFO L87 Difference]: Start difference. First operand 1440 states and 3564 transitions. Second operand 5 states. [2019-12-27 19:22:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:22:02,392 INFO L93 Difference]: Finished difference Result 1734 states and 4180 transitions. [2019-12-27 19:22:02,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 19:22:02,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-12-27 19:22:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:22:02,404 INFO L225 Difference]: With dead ends: 1734 [2019-12-27 19:22:02,404 INFO L226 Difference]: Without dead ends: 1508 [2019-12-27 19:22:02,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 19:22:02,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2019-12-27 19:22:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1376. [2019-12-27 19:22:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-12-27 19:22:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 3414 transitions. [2019-12-27 19:22:02,476 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 3414 transitions. Word has length 19 [2019-12-27 19:22:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:22:02,477 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 3414 transitions. [2019-12-27 19:22:02,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 19:22:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 3414 transitions. [2019-12-27 19:22:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 19:22:02,478 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:22:02,479 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:22:02,479 INFO L410 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-27 19:22:02,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:22:02,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1672493533, now seen corresponding path program 2 times [2019-12-27 19:22:02,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:22:02,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44853817] [2019-12-27 19:22:02,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:22:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:22:02,529 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 19:22:02,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44853817] [2019-12-27 19:22:02,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:22:02,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 19:22:02,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [405124785] [2019-12-27 19:22:02,530 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:22:02,532 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:22:02,539 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 49 states and 76 transitions. [2019-12-27 19:22:02,540 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:22:02,563 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 3 times. [2019-12-27 19:22:02,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-27 19:22:02,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:22:02,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-27 19:22:02,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-27 19:22:02,564 INFO L87 Difference]: Start difference. First operand 1376 states and 3414 transitions. Second operand 7 states. [2019-12-27 19:22:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:22:02,628 INFO L93 Difference]: Finished difference Result 530 states and 1160 transitions. [2019-12-27 19:22:02,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 19:22:02,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-27 19:22:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:22:02,629 INFO L225 Difference]: With dead ends: 530 [2019-12-27 19:22:02,629 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 19:22:02,630 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-27 19:22:02,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 19:22:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 19:22:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 19:22:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 19:22:02,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-12-27 19:22:02,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:22:02,631 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 19:22:02,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-27 19:22:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 19:22:02,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 19:22:02,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 07:22:02 BasicIcfg [2019-12-27 19:22:02,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 19:22:02,642 INFO L168 Benchmark]: Toolchain (without parser) took 6074.29 ms. Allocated memory was 144.7 MB in the beginning and 295.2 MB in the end (delta: 150.5 MB). Free memory was 101.4 MB in the beginning and 195.7 MB in the end (delta: -94.3 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2019-12-27 19:22:02,643 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 19:22:02,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.02 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 162.0 MB in the end (delta: -60.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2019-12-27 19:22:02,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.00 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 19:22:02,650 INFO L168 Benchmark]: Boogie Preprocessor took 26.38 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 158.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 19:22:02,651 INFO L168 Benchmark]: RCFGBuilder took 453.85 ms. Allocated memory is still 202.9 MB. Free memory was 158.6 MB in the beginning and 137.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-12-27 19:22:02,652 INFO L168 Benchmark]: TraceAbstraction took 4861.69 ms. Allocated memory was 202.9 MB in the beginning and 295.2 MB in the end (delta: 92.3 MB). Free memory was 136.6 MB in the beginning and 195.7 MB in the end (delta: -59.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2019-12-27 19:22:02,662 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.02 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 162.0 MB in the end (delta: -60.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.00 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.38 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 158.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.85 ms. Allocated memory is still 202.9 MB. Free memory was 158.6 MB in the beginning and 137.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4861.69 ms. Allocated memory was 202.9 MB in the beginning and 295.2 MB in the end (delta: 92.3 MB). Free memory was 136.6 MB in the beginning and 195.7 MB in the end (delta: -59.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 95 ProgramPointsBefore, 55 ProgramPointsAfterwards, 96 TransitionsBefore, 55 TransitionsAfterwards, 2072 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 658 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6304 CheckedPairsTotal, 41 TotalNumberOfCompositions - PositiveResult [Line: 697]: 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 3 procedures, 66 locations, 1 error locations. Result: SAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 411 SDslu, 548 SDs, 0 SdLazy, 163 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4772occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 5459 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...