/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-wmm/safe028_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:15:28,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:15:28,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:15:28,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:15:28,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:15:28,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:15:28,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:15:28,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:15:28,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:15:28,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:15:28,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:15:28,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:15:28,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:15:28,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:15:28,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:15:28,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:15:28,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:15:28,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:15:28,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:15:28,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:15:28,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:15:28,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:15:28,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:15:28,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:15:28,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:15:28,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:15:28,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:15:28,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:15:28,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:15:28,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:15:28,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:15:28,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:15:28,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:15:28,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:15:28,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:15:28,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:15:28,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:15:28,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:15:28,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:15:28,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:15:28,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:15:28,344 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 11:15:28,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:15:28,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:15:28,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:15:28,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:15:28,364 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:15:28,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:15:28,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:15:28,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:15:28,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:15:28,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:15:28,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:15:28,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:15:28,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:15:28,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:15:28,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:15:28,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:15:28,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:15:28,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:15:28,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:15:28,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:15:28,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:15:28,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:15:28,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:15:28,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:15:28,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:15:28,369 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:15:28,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:15:28,369 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:15:28,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:15:28,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:15:28,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:15:28,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:15:28,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:15:28,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:15:28,760 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:15:28,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i [2020-04-18 11:15:28,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00662f215/1411192c3d004733ad364c89c37ccb41/FLAG8050ff95e [2020-04-18 11:15:29,370 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:15:29,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i [2020-04-18 11:15:29,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00662f215/1411192c3d004733ad364c89c37ccb41/FLAG8050ff95e [2020-04-18 11:15:29,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00662f215/1411192c3d004733ad364c89c37ccb41 [2020-04-18 11:15:29,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:15:29,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:15:29,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:15:29,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:15:29,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:15:29,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:15:29" (1/1) ... [2020-04-18 11:15:29,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f1b029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:29, skipping insertion in model container [2020-04-18 11:15:29,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:15:29" (1/1) ... [2020-04-18 11:15:29,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:15:29,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:15:30,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:15:30,249 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:15:30,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:15:30,410 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:15:30,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30 WrapperNode [2020-04-18 11:15:30,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:15:30,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:15:30,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:15:30,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:15:30,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:15:30,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:15:30,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:15:30,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:15:30,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (1/1) ... [2020-04-18 11:15:30,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:15:30,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:15:30,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:15:30,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:15:30,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (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 11:15:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:15:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:15:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:15:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:15:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:15:30,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:15:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:15:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:15:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:15:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:15:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:15:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:15:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:15:30,587 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 11:15:31,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:15:31,088 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:15:31,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:15:31 BoogieIcfgContainer [2020-04-18 11:15:31,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:15:31,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:15:31,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:15:31,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:15:31,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:15:29" (1/3) ... [2020-04-18 11:15:31,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460930d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:15:31, skipping insertion in model container [2020-04-18 11:15:31,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:15:30" (2/3) ... [2020-04-18 11:15:31,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460930d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:15:31, skipping insertion in model container [2020-04-18 11:15:31,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:15:31" (3/3) ... [2020-04-18 11:15:31,102 INFO L109 eAbstractionObserver]: Analyzing ICFG safe028_tso.opt.i [2020-04-18 11:15:31,113 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:15:31,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:15:31,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:15:31,123 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:15:31,157 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,159 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,160 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,162 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,163 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,163 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,164 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,164 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,165 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,165 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,165 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,166 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,166 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,166 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,166 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,167 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,171 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,171 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,171 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,172 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,184 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,184 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,184 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,189 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,190 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,190 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,191 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:15:31,219 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:15:31,241 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:15:31,241 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:15:31,241 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:15:31,242 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:15:31,242 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:15:31,243 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:15:31,243 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:15:31,243 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:15:31,270 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 11:15:31,273 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:15:31,319 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:15:31,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:15:31,324 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:15:31,327 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 11:15:31,346 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 11:15:31,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:15:31,347 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:15:31,349 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 11:15:31,350 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:15:33,416 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2037 [2020-04-18 11:15:33,417 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-18 11:15:33,420 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 11:15:33,441 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 11:15:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 11:15:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:15:33,452 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:33,453 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:33,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:33,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2007579917, now seen corresponding path program 1 times [2020-04-18 11:15:33,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:33,468 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [588863235] [2020-04-18 11:15:33,485 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:33,498 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:15:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:15:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:15:33,500 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:33,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:33,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2007579917, now seen corresponding path program 2 times [2020-04-18 11:15:33,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:33,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248066566] [2020-04-18 11:15:33,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:33,717 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 11:15:33,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248066566] [2020-04-18 11:15:33,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:33,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:15:33,723 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:33,725 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:33,728 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:15:33,729 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:33,735 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:15:33,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:15:33,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:15:33,743 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:15:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:33,747 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:15:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:15:33,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:33,748 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [588863235] [2020-04-18 11:15:33,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:33,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:15:33,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [588863235] [2020-04-18 11:15:33,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:15:33,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:33,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:15:33,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:15:33,756 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 11:15:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:33,786 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-04-18 11:15:33,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:15:33,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:15:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:33,803 INFO L225 Difference]: With dead ends: 214 [2020-04-18 11:15:33,803 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 11:15:33,804 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 11:15:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 11:15:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 11:15:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 11:15:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-04-18 11:15:33,865 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-04-18 11:15:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:33,867 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-04-18 11:15:33,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:15:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-04-18 11:15:33,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:15:33,868 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:33,868 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:33,869 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:33,869 INFO L82 PathProgramCache]: Analyzing trace with hash 2105434478, now seen corresponding path program 1 times [2020-04-18 11:15:33,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:33,870 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1327563639] [2020-04-18 11:15:33,870 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:33,871 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 11:15:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:15:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:15:33,872 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:33,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2105434478, now seen corresponding path program 2 times [2020-04-18 11:15:33,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:33,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577160478] [2020-04-18 11:15:33,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:34,022 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 11:15:34,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577160478] [2020-04-18 11:15:34,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:34,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:15:34,023 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:34,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,028 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 11:15:34,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:34,045 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:15:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:34,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:34,045 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 11:15:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:34,058 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 11:15:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 11:15:34,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:34,059 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1327563639] [2020-04-18 11:15:34,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:34,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:15:34,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1327563639] [2020-04-18 11:15:34,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:15:34,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:34,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:34,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:15:34,061 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-04-18 11:15:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:34,089 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-04-18 11:15:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:15:34,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:15:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:34,093 INFO L225 Difference]: With dead ends: 202 [2020-04-18 11:15:34,093 INFO L226 Difference]: Without dead ends: 130 [2020-04-18 11:15:34,094 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:15:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-04-18 11:15:34,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-04-18 11:15:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-04-18 11:15:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-04-18 11:15:34,110 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-04-18 11:15:34,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:34,111 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-04-18 11:15:34,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:15:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-04-18 11:15:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:15:34,112 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:34,112 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:34,112 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash 857303980, now seen corresponding path program 1 times [2020-04-18 11:15:34,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:34,113 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [228522209] [2020-04-18 11:15:34,114 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,115 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 11:15:34,115 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 11:15:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:15:34,116 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:34,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:34,116 INFO L82 PathProgramCache]: Analyzing trace with hash 857303980, now seen corresponding path program 2 times [2020-04-18 11:15:34,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:34,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631145339] [2020-04-18 11:15:34,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:34,182 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 11:15:34,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631145339] [2020-04-18 11:15:34,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:34,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:15:34,183 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:34,184 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,185 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 11:15:34,186 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:34,196 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:15:34,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:34,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:34,197 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-04-18 11:15:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:34,206 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2020-04-18 11:15:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 30 transitions. [2020-04-18 11:15:34,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:34,206 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [228522209] [2020-04-18 11:15:34,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:34,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:15:34,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [228522209] [2020-04-18 11:15:34,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:15:34,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:34,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:34,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:15:34,208 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 4 states. [2020-04-18 11:15:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:34,242 INFO L93 Difference]: Finished difference Result 148 states and 336 transitions. [2020-04-18 11:15:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:15:34,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 11:15:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:34,244 INFO L225 Difference]: With dead ends: 148 [2020-04-18 11:15:34,244 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 11:15:34,244 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:15:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 11:15:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 11:15:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 11:15:34,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 253 transitions. [2020-04-18 11:15:34,254 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 253 transitions. Word has length 10 [2020-04-18 11:15:34,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:34,271 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 253 transitions. [2020-04-18 11:15:34,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:15:34,271 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 253 transitions. [2020-04-18 11:15:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:15:34,272 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:34,272 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:34,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:34,273 INFO L82 PathProgramCache]: Analyzing trace with hash 806230555, now seen corresponding path program 1 times [2020-04-18 11:15:34,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:34,273 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [985867997] [2020-04-18 11:15:34,274 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,274 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 11:15:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:15:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:15:34,276 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:34,276 INFO L82 PathProgramCache]: Analyzing trace with hash 806634175, now seen corresponding path program 2 times [2020-04-18 11:15:34,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:34,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500553383] [2020-04-18 11:15:34,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:34,342 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 11:15:34,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500553383] [2020-04-18 11:15:34,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:34,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:15:34,343 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:34,344 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,346 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:15:34,346 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:34,357 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:34,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:34,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:34,357 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 11:15:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:34,374 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-04-18 11:15:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-04-18 11:15:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:15:34,375 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:15:34,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:34,375 INFO L82 PathProgramCache]: Analyzing trace with hash 806230555, now seen corresponding path program 3 times [2020-04-18 11:15:34,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:34,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811002104] [2020-04-18 11:15:34,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:34,463 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 11:15:34,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811002104] [2020-04-18 11:15:34,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:34,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:15:34,465 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:34,466 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,468 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:15:34,468 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:34,507 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:34,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:34,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:15:34,508 INFO L87 Difference]: Start difference. First operand 32 states and 51 transitions. Second operand 6 states. [2020-04-18 11:15:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:34,525 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-04-18 11:15:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-04-18 11:15:34,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:34,526 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [985867997] [2020-04-18 11:15:34,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:34,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:15:34,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [985867997] [2020-04-18 11:15:34,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:15:34,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:34,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:34,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:15:34,529 INFO L87 Difference]: Start difference. First operand 112 states and 253 transitions. Second operand 6 states. [2020-04-18 11:15:34,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:34,609 INFO L93 Difference]: Finished difference Result 109 states and 227 transitions. [2020-04-18 11:15:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:15:34,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 11:15:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:34,611 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:15:34,611 INFO L226 Difference]: Without dead ends: 85 [2020-04-18 11:15:34,612 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:15:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-04-18 11:15:34,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-04-18 11:15:34,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-04-18 11:15:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 173 transitions. [2020-04-18 11:15:34,623 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 173 transitions. Word has length 11 [2020-04-18 11:15:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:34,623 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 173 transitions. [2020-04-18 11:15:34,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:15:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 173 transitions. [2020-04-18 11:15:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:15:34,628 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:34,628 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:34,629 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:34,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:34,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1664906609, now seen corresponding path program 1 times [2020-04-18 11:15:34,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:34,631 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [451057312] [2020-04-18 11:15:34,632 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,634 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions. [2020-04-18 11:15:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 11:15:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:15:34,635 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2081333969, now seen corresponding path program 2 times [2020-04-18 11:15:34,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:34,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220020392] [2020-04-18 11:15:34,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:34,744 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 11:15:34,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220020392] [2020-04-18 11:15:34,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:34,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:15:34,746 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:34,747 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,750 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions. [2020-04-18 11:15:34,750 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:34,764 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:34,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:34,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:34,767 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-04-18 11:15:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:34,795 INFO L93 Difference]: Finished difference Result 58 states and 105 transitions. [2020-04-18 11:15:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 105 transitions. [2020-04-18 11:15:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:15:34,796 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:15:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:34,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1693455149, now seen corresponding path program 3 times [2020-04-18 11:15:34,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:34,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704692718] [2020-04-18 11:15:34,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:34,898 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 11:15:34,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704692718] [2020-04-18 11:15:34,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:34,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:34,900 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:34,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:34,903 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 11:15:34,903 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:34,940 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:34,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:34,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:15:34,941 INFO L87 Difference]: Start difference. First operand 58 states and 105 transitions. Second operand 6 states. [2020-04-18 11:15:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:35,001 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-18 11:15:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-04-18 11:15:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:15:35,002 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:15:35,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:35,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1664906609, now seen corresponding path program 4 times [2020-04-18 11:15:35,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:35,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732220471] [2020-04-18 11:15:35,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:35,052 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 11:15:35,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732220471] [2020-04-18 11:15:35,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:35,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:35,054 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:35,055 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:35,058 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 11:15:35,058 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:35,079 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:35,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:15:35,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:15:35,080 INFO L87 Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 7 states. [2020-04-18 11:15:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:35,131 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-04-18 11:15:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-04-18 11:15:35,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:35,133 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [451057312] [2020-04-18 11:15:35,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:35,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:15:35,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [451057312] [2020-04-18 11:15:35,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:15:35,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:35,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:15:35,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:15:35,135 INFO L87 Difference]: Start difference. First operand 85 states and 173 transitions. Second operand 7 states. [2020-04-18 11:15:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:35,194 INFO L93 Difference]: Finished difference Result 80 states and 161 transitions. [2020-04-18 11:15:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:15:35,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 11:15:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:35,196 INFO L225 Difference]: With dead ends: 80 [2020-04-18 11:15:35,196 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 11:15:35,196 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:15:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 11:15:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 11:15:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 11:15:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 147 transitions. [2020-04-18 11:15:35,201 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 147 transitions. Word has length 13 [2020-04-18 11:15:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:35,201 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 147 transitions. [2020-04-18 11:15:35,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:15:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 147 transitions. [2020-04-18 11:15:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:35,202 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:35,202 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:35,202 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:35,203 INFO L82 PathProgramCache]: Analyzing trace with hash 399497030, now seen corresponding path program 1 times [2020-04-18 11:15:35,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:35,203 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1445296930] [2020-04-18 11:15:35,204 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:35,211 INFO L259 McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions. [2020-04-18 11:15:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-04-18 11:15:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:35,215 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:35,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1909222784, now seen corresponding path program 2 times [2020-04-18 11:15:35,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:35,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30480964] [2020-04-18 11:15:35,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:35,262 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 11:15:35,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30480964] [2020-04-18 11:15:35,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:35,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:15:35,263 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:35,264 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:35,273 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 11:15:35,273 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:35,285 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:35,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:35,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:15:35,289 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-04-18 11:15:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:35,321 INFO L93 Difference]: Finished difference Result 238 states and 612 transitions. [2020-04-18 11:15:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 612 transitions. [2020-04-18 11:15:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:35,323 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:15:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:35,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1953593056, now seen corresponding path program 3 times [2020-04-18 11:15:35,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:35,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648092652] [2020-04-18 11:15:35,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:35,415 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 11:15:35,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648092652] [2020-04-18 11:15:35,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:35,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:35,416 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:35,417 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:35,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-04-18 11:15:35,420 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:35,466 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:15:35,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:35,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:15:35,467 INFO L87 Difference]: Start difference. First operand 238 states and 612 transitions. Second operand 6 states. [2020-04-18 11:15:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:35,553 INFO L93 Difference]: Finished difference Result 256 states and 637 transitions. [2020-04-18 11:15:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 637 transitions. [2020-04-18 11:15:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:35,554 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:15:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1206368608, now seen corresponding path program 4 times [2020-04-18 11:15:35,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:35,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242300907] [2020-04-18 11:15:35,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:35,614 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 11:15:35,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242300907] [2020-04-18 11:15:35,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:35,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:35,615 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:35,616 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:35,621 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 11:15:35,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:35,666 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:15:35,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:15:35,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:15:35,667 INFO L87 Difference]: Start difference. First operand 256 states and 637 transitions. Second operand 5 states. [2020-04-18 11:15:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:35,700 INFO L93 Difference]: Finished difference Result 378 states and 878 transitions. [2020-04-18 11:15:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 878 transitions. [2020-04-18 11:15:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:35,701 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:15:35,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:35,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1263359428, now seen corresponding path program 5 times [2020-04-18 11:15:35,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:35,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272381181] [2020-04-18 11:15:35,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:35,774 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 11:15:35,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272381181] [2020-04-18 11:15:35,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:35,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:15:35,775 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:35,776 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:35,780 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-04-18 11:15:35,781 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:35,806 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:15:35,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:15:35,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:15:35,807 INFO L87 Difference]: Start difference. First operand 378 states and 878 transitions. Second operand 7 states. [2020-04-18 11:15:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:35,915 INFO L93 Difference]: Finished difference Result 382 states and 880 transitions. [2020-04-18 11:15:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 880 transitions. [2020-04-18 11:15:35,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:35,917 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:15:35,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:35,917 INFO L82 PathProgramCache]: Analyzing trace with hash 936627168, now seen corresponding path program 6 times [2020-04-18 11:15:35,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:35,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497998740] [2020-04-18 11:15:35,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:35,949 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 11:15:35,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497998740] [2020-04-18 11:15:35,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:35,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:15:35,950 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:35,951 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:35,954 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 18 transitions. [2020-04-18 11:15:35,955 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:35,981 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:15:35,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:15:35,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:15:35,982 INFO L87 Difference]: Start difference. First operand 382 states and 880 transitions. Second operand 4 states. [2020-04-18 11:15:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:36,005 INFO L93 Difference]: Finished difference Result 596 states and 1327 transitions. [2020-04-18 11:15:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1327 transitions. [2020-04-18 11:15:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:15:36,007 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:15:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:36,007 INFO L82 PathProgramCache]: Analyzing trace with hash 967250296, now seen corresponding path program 7 times [2020-04-18 11:15:36,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:36,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733032253] [2020-04-18 11:15:36,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:36,035 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 11:15:36,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733032253] [2020-04-18 11:15:36,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:36,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:15:36,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:36,037 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:36,044 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 64 transitions. [2020-04-18 11:15:36,044 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:36,165 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:15:36,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:36,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:15:36,167 INFO L87 Difference]: Start difference. First operand 596 states and 1327 transitions. Second operand 6 states. [2020-04-18 11:15:36,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:36,205 INFO L93 Difference]: Finished difference Result 948 states and 1949 transitions. [2020-04-18 11:15:36,205 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1949 transitions. [2020-04-18 11:15:36,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:36,209 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1445296930] [2020-04-18 11:15:36,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:36,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:15:36,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1445296930] [2020-04-18 11:15:36,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 11:15:36,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 11:15:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:15:36,211 INFO L87 Difference]: Start difference. First operand 72 states and 147 transitions. Second operand 16 states. [2020-04-18 11:15:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:36,954 INFO L93 Difference]: Finished difference Result 109 states and 212 transitions. [2020-04-18 11:15:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-18 11:15:36,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2020-04-18 11:15:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:36,955 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:15:36,955 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:15:36,957 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=526, Invalid=2024, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 11:15:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:15:36,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:15:36,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:15:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:15:36,958 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 11:15:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:36,958 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:15:36,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 11:15:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:15:36,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:36,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:15:36 BasicIcfg [2020-04-18 11:15:36,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:15:36,966 INFO L168 Benchmark]: Toolchain (without parser) took 7334.86 ms. Allocated memory was 138.4 MB in the beginning and 287.3 MB in the end (delta: 148.9 MB). Free memory was 101.9 MB in the beginning and 217.8 MB in the end (delta: -115.9 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:36,967 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 11:15:36,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.74 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 99.9 MB in the beginning and 156.9 MB in the end (delta: -57.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:36,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 200.3 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:36,979 INFO L168 Benchmark]: Boogie Preprocessor took 35.52 ms. Allocated memory is still 200.3 MB. Free memory was 154.8 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:36,980 INFO L168 Benchmark]: RCFGBuilder took 584.93 ms. Allocated memory is still 200.3 MB. Free memory was 153.5 MB in the beginning and 131.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:36,982 INFO L168 Benchmark]: TraceAbstraction took 5869.68 ms. Allocated memory was 200.3 MB in the beginning and 287.3 MB in the end (delta: 87.0 MB). Free memory was 130.8 MB in the beginning and 217.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 81.6 kB. Max. memory is 7.1 GB. [2020-04-18 11:15:36,989 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 762.74 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 99.9 MB in the beginning and 156.9 MB in the end (delta: -57.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 200.3 MB. Free memory was 156.9 MB in the beginning and 154.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.52 ms. Allocated memory is still 200.3 MB. Free memory was 154.8 MB in the beginning and 153.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 584.93 ms. Allocated memory is still 200.3 MB. Free memory was 153.5 MB in the beginning and 131.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5869.68 ms. Allocated memory was 200.3 MB in the beginning and 287.3 MB in the end (delta: 87.0 MB). Free memory was 130.8 MB in the beginning and 217.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 81.6 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 644 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2037 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 103 SDtfs, 266 SDslu, 255 SDs, 0 SdLazy, 294 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...