/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-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:40:58,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:40:58,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:40:58,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:40:58,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:40:58,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:40:58,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:40:58,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:40:58,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:40:58,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:40:58,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:40:58,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:40:58,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:40:58,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:40:58,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:40:58,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:40:58,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:40:58,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:40:58,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:40:58,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:40:58,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:40:58,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:40:58,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:40:58,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:40:58,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:40:58,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:40:58,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:40:58,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:40:58,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:40:58,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:40:58,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:40:58,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:40:58,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:40:58,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:40:58,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:40:58,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:40:58,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:40:58,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:40:58,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:40:58,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:40:58,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:40:58,269 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-McrStrategy.epf [2020-04-18 07:40:58,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:40:58,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:40:58,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:40:58,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:40:58,294 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:40:58,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:40:58,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:40:58,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:40:58,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:40:58,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:40:58,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:40:58,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:40:58,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:40:58,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:40:58,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:40:58,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:40:58,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:40:58,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:40:58,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:40:58,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:40:58,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:40:58,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:40:58,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:40:58,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:40:58,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:40:58,300 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:40:58,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:40:58,300 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:40:58,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:40:58,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:40:58,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:40:58,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:40:58,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:40:58,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:40:58,616 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:40:58,617 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-04-18 07:40:58,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67fc9bfd4/a82506850c1e426cadbf5411218652be/FLAGe074984d1 [2020-04-18 07:40:59,234 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:40:59,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-04-18 07:40:59,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67fc9bfd4/a82506850c1e426cadbf5411218652be/FLAGe074984d1 [2020-04-18 07:40:59,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67fc9bfd4/a82506850c1e426cadbf5411218652be [2020-04-18 07:40:59,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:40:59,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:40:59,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:40:59,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:40:59,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:40:59,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:59" (1/1) ... [2020-04-18 07:40:59,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:59, skipping insertion in model container [2020-04-18 07:40:59,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:59" (1/1) ... [2020-04-18 07:40:59,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:40:59,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:41:00,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:41:00,145 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:41:00,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:41:00,301 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:41:00,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00 WrapperNode [2020-04-18 07:41:00,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:41:00,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:41:00,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:41:00,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:41:00,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:41:00,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:41:00,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:41:00,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:41:00,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... [2020-04-18 07:41:00,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:41:00,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:41:00,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:41:00,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:41:00,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:41:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 07:41:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 07:41:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:41:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:41:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:41:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:41:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:41:00,462 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:41:00,882 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:41:00,883 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-04-18 07:41:00,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:41:00 BoogieIcfgContainer [2020-04-18 07:41:00,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:41:00,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:41:00,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:41:00,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:41:00,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:40:59" (1/3) ... [2020-04-18 07:41:00,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac589f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:41:00, skipping insertion in model container [2020-04-18 07:41:00,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:41:00" (2/3) ... [2020-04-18 07:41:00,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac589f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:41:00, skipping insertion in model container [2020-04-18 07:41:00,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:41:00" (3/3) ... [2020-04-18 07:41:00,896 INFO L109 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-04-18 07:41:00,907 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:41:00,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:41:00,915 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 07:41:00,916 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:41:00,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,938 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,939 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,939 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,944 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,944 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 07:41:00,976 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:41:00,976 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:41:00,976 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:41:00,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:41:00,976 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:41:00,976 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:41:00,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:41:00,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:41:00,993 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 82 transitions, 169 flow [2020-04-18 07:41:00,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-04-18 07:41:01,039 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-04-18 07:41:01,040 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 07:41:01,049 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-04-18 07:41:01,054 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 82 transitions, 169 flow [2020-04-18 07:41:01,076 INFO L129 PetriNetUnfolder]: 24/81 cut-off events. [2020-04-18 07:41:01,077 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 07:41:01,078 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 24/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-04-18 07:41:01,082 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2400 [2020-04-18 07:41:01,083 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:41:02,090 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4233 [2020-04-18 07:41:02,091 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2020-04-18 07:41:02,095 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-04-18 07:41:02,123 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-04-18 07:41:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-04-18 07:41:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:41:02,137 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:02,138 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:02,139 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 1 times [2020-04-18 07:41:02,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:02,155 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1819434672] [2020-04-18 07:41:02,174 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,192 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:41:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 07:41:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:41:02,195 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1558311805, now seen corresponding path program 2 times [2020-04-18 07:41:02,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:02,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188632277] [2020-04-18 07:41:02,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:02,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188632277] [2020-04-18 07:41:02,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:02,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:41:02,369 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:02,370 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,371 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:41:02,371 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:02,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:02,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 07:41:02,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:41:02,381 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2020-04-18 07:41:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,385 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 07:41:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 07:41:02,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:02,387 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1819434672] [2020-04-18 07:41:02,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:02,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:41:02,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1819434672] [2020-04-18 07:41:02,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 07:41:02,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:02,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 07:41:02,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:41:02,395 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-04-18 07:41:02,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,408 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-04-18 07:41:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 07:41:02,410 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-04-18 07:41:02,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:02,425 INFO L225 Difference]: With dead ends: 198 [2020-04-18 07:41:02,425 INFO L226 Difference]: Without dead ends: 198 [2020-04-18 07:41:02,426 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:41:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-04-18 07:41:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-04-18 07:41:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-18 07:41:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-04-18 07:41:02,487 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-04-18 07:41:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:02,487 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-04-18 07:41:02,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 07:41:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-04-18 07:41:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 07:41:02,489 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:02,489 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:02,490 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 1 times [2020-04-18 07:41:02,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:02,491 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1567491196] [2020-04-18 07:41:02,491 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 07:41:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 07:41:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 07:41:02,493 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1031484476, now seen corresponding path program 2 times [2020-04-18 07:41:02,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:02,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280798532] [2020-04-18 07:41:02,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:02,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280798532] [2020-04-18 07:41:02,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:02,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:41:02,604 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:02,605 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,607 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 07:41:02,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:02,612 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:02,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:02,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:02,613 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 07:41:02,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,623 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 07:41:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 07:41:02,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:02,624 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1567491196] [2020-04-18 07:41:02,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:02,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:41:02,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1567491196] [2020-04-18 07:41:02,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:41:02,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:02,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:02,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:02,627 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-04-18 07:41:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,665 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-04-18 07:41:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:41:02,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 07:41:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:02,670 INFO L225 Difference]: With dead ends: 362 [2020-04-18 07:41:02,670 INFO L226 Difference]: Without dead ends: 362 [2020-04-18 07:41:02,672 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-04-18 07:41:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-04-18 07:41:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-04-18 07:41:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-04-18 07:41:02,714 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-04-18 07:41:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:02,715 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-04-18 07:41:02,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:41:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-04-18 07:41:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 07:41:02,717 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:02,717 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:02,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 1 times [2020-04-18 07:41:02,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:02,719 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [248157779] [2020-04-18 07:41:02,719 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 07:41:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 07:41:02,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 07:41:02,721 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:02,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1746695160, now seen corresponding path program 2 times [2020-04-18 07:41:02,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:02,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719310608] [2020-04-18 07:41:02,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:02,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719310608] [2020-04-18 07:41:02,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:02,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:41:02,795 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:02,796 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,797 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 07:41:02,797 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:02,802 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:02,803 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 07:41:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,805 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 07:41:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 07:41:02,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:02,806 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [248157779] [2020-04-18 07:41:02,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:02,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:41:02,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [248157779] [2020-04-18 07:41:02,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:41:02,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:02,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:02,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:02,809 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-04-18 07:41:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,830 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-04-18 07:41:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:41:02,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 07:41:02,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:02,834 INFO L225 Difference]: With dead ends: 348 [2020-04-18 07:41:02,835 INFO L226 Difference]: Without dead ends: 348 [2020-04-18 07:41:02,835 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-04-18 07:41:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-04-18 07:41:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 07:41:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-04-18 07:41:02,853 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-04-18 07:41:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:02,853 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-04-18 07:41:02,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:41:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-04-18 07:41:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:41:02,855 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:02,856 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:02,856 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 1 times [2020-04-18 07:41:02,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:02,858 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1053445473] [2020-04-18 07:41:02,859 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,861 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 163 transitions. [2020-04-18 07:41:02,863 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-04-18 07:41:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:41:02,865 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,866 INFO L82 PathProgramCache]: Analyzing trace with hash 584133060, now seen corresponding path program 2 times [2020-04-18 07:41:02,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:02,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703335929] [2020-04-18 07:41:02,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:02,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703335929] [2020-04-18 07:41:02,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:02,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:02,948 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:02,949 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:02,952 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 64 transitions. [2020-04-18 07:41:02,952 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:02,959 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:02,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:02,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:02,960 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-04-18 07:41:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:02,968 INFO L93 Difference]: Finished difference Result 94 states and 164 transitions. [2020-04-18 07:41:02,968 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 164 transitions. [2020-04-18 07:41:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:41:02,969 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:41:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:02,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1652537164, now seen corresponding path program 3 times [2020-04-18 07:41:02,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:02,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019914003] [2020-04-18 07:41:02,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:03,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019914003] [2020-04-18 07:41:03,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:03,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:03,013 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:03,015 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:03,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-04-18 07:41:03,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:03,025 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:41:03,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:03,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:03,026 INFO L87 Difference]: Start difference. First operand 94 states and 164 transitions. Second operand 3 states. [2020-04-18 07:41:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:03,036 INFO L93 Difference]: Finished difference Result 120 states and 203 transitions. [2020-04-18 07:41:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 203 transitions. [2020-04-18 07:41:03,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:41:03,037 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:41:03,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash 859472572, now seen corresponding path program 4 times [2020-04-18 07:41:03,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:03,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141396281] [2020-04-18 07:41:03,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:03,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141396281] [2020-04-18 07:41:03,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:03,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:03,076 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:03,078 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:03,097 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-04-18 07:41:03,097 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:03,104 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:03,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:03,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:03,105 INFO L87 Difference]: Start difference. First operand 120 states and 203 transitions. Second operand 3 states. [2020-04-18 07:41:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:03,115 INFO L93 Difference]: Finished difference Result 158 states and 264 transitions. [2020-04-18 07:41:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 264 transitions. [2020-04-18 07:41:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:41:03,116 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 07:41:03,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:03,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1436192428, now seen corresponding path program 5 times [2020-04-18 07:41:03,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:03,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348061681] [2020-04-18 07:41:03,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:03,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348061681] [2020-04-18 07:41:03,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:03,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:03,164 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:03,166 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:03,167 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2020-04-18 07:41:03,167 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:03,190 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:03,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:03,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 07:41:03,191 INFO L87 Difference]: Start difference. First operand 158 states and 264 transitions. Second operand 3 states. [2020-04-18 07:41:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:03,208 INFO L93 Difference]: Finished difference Result 216 states and 345 transitions. [2020-04-18 07:41:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 345 transitions. [2020-04-18 07:41:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 07:41:03,209 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 07:41:03,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:03,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1147134708, now seen corresponding path program 6 times [2020-04-18 07:41:03,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:03,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488932394] [2020-04-18 07:41:03,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:03,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488932394] [2020-04-18 07:41:03,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:03,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:03,275 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:03,277 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:03,279 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 46 transitions. [2020-04-18 07:41:03,279 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:03,337 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:41:03,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:03,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 07:41:03,341 INFO L87 Difference]: Start difference. First operand 216 states and 345 transitions. Second operand 4 states. [2020-04-18 07:41:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:03,418 INFO L93 Difference]: Finished difference Result 252 states and 405 transitions. [2020-04-18 07:41:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 405 transitions. [2020-04-18 07:41:03,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:03,420 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1053445473] [2020-04-18 07:41:03,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:03,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:03,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1053445473] [2020-04-18 07:41:03,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 07:41:03,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:03,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 07:41:03,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:41:03,423 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 8 states. [2020-04-18 07:41:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:04,023 INFO L93 Difference]: Finished difference Result 316 states and 742 transitions. [2020-04-18 07:41:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 07:41:04,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-04-18 07:41:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:04,024 INFO L225 Difference]: With dead ends: 316 [2020-04-18 07:41:04,024 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 07:41:04,025 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-04-18 07:41:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 07:41:04,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 07:41:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 07:41:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 07:41:04,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-18 07:41:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:04,026 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 07:41:04,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 07:41:04,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 07:41:04,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:04,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:41:04 BasicIcfg [2020-04-18 07:41:04,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:41:04,033 INFO L168 Benchmark]: Toolchain (without parser) took 4427.17 ms. Allocated memory was 144.2 MB in the beginning and 250.6 MB in the end (delta: 106.4 MB). Free memory was 100.5 MB in the beginning and 118.6 MB in the end (delta: -18.0 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. [2020-04-18 07:41:04,034 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 07:41:04,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.50 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: -62.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 07:41:04,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.18 ms. Allocated memory is still 201.3 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 07:41:04,037 INFO L168 Benchmark]: Boogie Preprocessor took 31.35 ms. Allocated memory is still 201.3 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 07:41:04,037 INFO L168 Benchmark]: RCFGBuilder took 495.81 ms. Allocated memory is still 201.3 MB. Free memory was 157.5 MB in the beginning and 136.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 07:41:04,038 INFO L168 Benchmark]: TraceAbstraction took 3142.69 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 135.3 MB in the beginning and 118.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2020-04-18 07:41:04,043 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.50 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: -62.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.18 ms. Allocated memory is still 201.3 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.35 ms. Allocated memory is still 201.3 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 495.81 ms. Allocated memory is still 201.3 MB. Free memory was 157.5 MB in the beginning and 136.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3142.69 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 135.3 MB in the beginning and 118.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 62 ProgramPointsBefore, 35 ProgramPointsAfterwards, 82 TransitionsBefore, 51 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 990 VarBasedMoverChecksPositive, 68 VarBasedMoverChecksNegative, 40 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 4233 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 705]: 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 2 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 305 SDtfs, 196 SDslu, 364 SDs, 0 SdLazy, 404 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 271 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...