/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/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:02:47,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:02:47,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:02:47,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:02:47,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:02:47,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:02:47,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:02:47,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:02:47,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:02:47,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:02:47,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:02:47,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:02:47,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:02:47,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:02:47,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:02:47,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:02:47,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:02:47,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:02:47,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:02:47,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:02:47,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:02:47,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:02:47,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:02:47,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:02:47,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:02:47,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:02:47,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:02:47,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:02:47,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:02:47,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:02:47,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:02:47,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:02:47,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:02:47,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:02:47,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:02:47,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:02:47,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:02:47,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:02:47,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:02:47,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:02:47,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:02:47,345 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 11:02:47,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:02:47,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:02:47,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:02:47,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:02:47,384 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:02:47,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:02:47,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:02:47,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:02:47,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:02:47,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:02:47,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:02:47,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:02:47,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:02:47,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:02:47,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:02:47,390 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:02:47,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:02:47,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:02:47,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:02:47,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:02:47,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:02:47,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:02:47,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:02:47,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:02:47,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:02:47,392 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:02:47,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:02:47,394 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:02:47,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:02:47,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:02:47,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:02:47,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:02:47,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:02:47,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:02:47,690 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:02:47,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-04-18 11:02:47,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b52a0cb31/8354fe82573a44b49373e83f386ded36/FLAG10a70886a [2020-04-18 11:02:48,305 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:02:48,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-04-18 11:02:48,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b52a0cb31/8354fe82573a44b49373e83f386ded36/FLAG10a70886a [2020-04-18 11:02:48,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b52a0cb31/8354fe82573a44b49373e83f386ded36 [2020-04-18 11:02:48,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:02:48,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:02:48,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:02:48,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:02:48,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:02:48,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:02:48" (1/1) ... [2020-04-18 11:02:48,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e49eb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:48, skipping insertion in model container [2020-04-18 11:02:48,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:02:48" (1/1) ... [2020-04-18 11:02:48,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:02:48,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:02:49,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:02:49,274 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:02:49,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:02:49,448 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:02:49,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49 WrapperNode [2020-04-18 11:02:49,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:02:49,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:02:49,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:02:49,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:02:49,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:02:49,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:02:49,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:02:49,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:02:49,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (1/1) ... [2020-04-18 11:02:49,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:02:49,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:02:49,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:02:49,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:02:49,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (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 11:02:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:02:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:02:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:02:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:02:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:02:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:02:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:02:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:02:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:02:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:02:49,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:02:49,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:02:49,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:02:49,591 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 11:02:49,980 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:02:49,980 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:02:49,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:02:49 BoogieIcfgContainer [2020-04-18 11:02:49,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:02:49,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:02:49,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:02:49,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:02:49,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:02:48" (1/3) ... [2020-04-18 11:02:49,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628dab61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:02:49, skipping insertion in model container [2020-04-18 11:02:49,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:49" (2/3) ... [2020-04-18 11:02:49,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628dab61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:02:49, skipping insertion in model container [2020-04-18 11:02:49,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:02:49" (3/3) ... [2020-04-18 11:02:49,993 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2020-04-18 11:02:50,003 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:02:50,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:02:50,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:02:50,013 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:02:50,038 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,039 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,039 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,039 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,040 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,040 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,041 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,041 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,041 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,042 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,042 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,042 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,043 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,043 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,043 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,043 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,044 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,044 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,049 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,049 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,055 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,056 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,056 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,056 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,059 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,059 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,060 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,060 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:50,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:02:50,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:02:50,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:02:50,103 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:02:50,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:02:50,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:02:50,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:02:50,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:02:50,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:02:50,119 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 11:02:50,122 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 11:02:50,164 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 11:02:50,165 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:02:50,170 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 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. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:02:50,172 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 11:02:50,208 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 11:02:50,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:02:50,209 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 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. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 11:02:50,211 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 11:02:50,213 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:02:51,753 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 11:02:51,847 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-04-18 11:02:51,847 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 11:02:51,851 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 11:02:51,875 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-04-18 11:02:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-04-18 11:02:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:02:51,885 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:51,886 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:51,886 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:51,893 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-04-18 11:02:51,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:51,900 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1658122786] [2020-04-18 11:02:51,916 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:51,928 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:02:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:02:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:02:51,930 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:51,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:51,931 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 2 times [2020-04-18 11:02:51,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:51,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519973753] [2020-04-18 11:02:51,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:52,127 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 11:02:52,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519973753] [2020-04-18 11:02:52,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:52,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:52,131 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:52,133 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:52,139 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:02:52,139 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:52,143 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:52,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:02:52,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:02:52,150 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:02:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:52,155 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:02:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:02:52,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:52,157 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1658122786] [2020-04-18 11:02:52,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:52,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:52,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1658122786] [2020-04-18 11:02:52,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:02:52,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:52,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:02:52,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:02:52,166 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-04-18 11:02:52,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:52,185 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-04-18 11:02:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:02:52,187 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:02:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:52,202 INFO L225 Difference]: With dead ends: 274 [2020-04-18 11:02:52,202 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 11:02:52,204 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:02:52,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 11:02:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 11:02:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 11:02:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-04-18 11:02:52,277 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-04-18 11:02:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:52,278 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-04-18 11:02:52,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:02:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-04-18 11:02:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:02:52,280 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:52,280 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:52,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:52,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:52,281 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-04-18 11:02:52,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:52,281 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [20358586] [2020-04-18 11:02:52,282 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:52,282 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:02:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:02:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:02:52,283 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:52,284 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 2 times [2020-04-18 11:02:52,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:52,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280428201] [2020-04-18 11:02:52,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:52,437 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 11:02:52,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280428201] [2020-04-18 11:02:52,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:52,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:52,438 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:52,439 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:52,440 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:02:52,440 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:52,453 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:52,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:52,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:02:52,454 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 11:02:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:52,469 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:02:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:02:52,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:52,470 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [20358586] [2020-04-18 11:02:52,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:52,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:52,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [20358586] [2020-04-18 11:02:52,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:02:52,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:52,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:52,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:02:52,472 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-04-18 11:02:52,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:52,498 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-04-18 11:02:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:02:52,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:02:52,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:52,502 INFO L225 Difference]: With dead ends: 250 [2020-04-18 11:02:52,502 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 11:02:52,503 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 11:02:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 11:02:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 11:02:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 11:02:52,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-04-18 11:02:52,524 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-04-18 11:02:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:52,525 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-04-18 11:02:52,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:02:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-04-18 11:02:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:02:52,527 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:52,527 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:52,527 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:52,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-04-18 11:02:52,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:52,528 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1962729612] [2020-04-18 11:02:52,528 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:52,529 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 11:02:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 11:02:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:02:52,530 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1465182248, now seen corresponding path program 2 times [2020-04-18 11:02:52,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:52,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192759287] [2020-04-18 11:02:52,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:52,625 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 11:02:52,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192759287] [2020-04-18 11:02:52,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:52,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:52,629 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:52,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:52,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 11:02:52,632 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:52,644 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:52,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:02:52,645 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-04-18 11:02:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:52,663 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-04-18 11:02:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-04-18 11:02:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:02:52,663 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:52,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 3 times [2020-04-18 11:02:52,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:52,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549109580] [2020-04-18 11:02:52,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:52,717 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 11:02:52,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549109580] [2020-04-18 11:02:52,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:52,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:52,718 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:52,719 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:52,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 11:02:52,720 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:52,729 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:52,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:52,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:52,729 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-04-18 11:02:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:52,760 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-04-18 11:02:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-04-18 11:02:52,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:52,761 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1962729612] [2020-04-18 11:02:52,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:52,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:02:52,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1962729612] [2020-04-18 11:02:52,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:02:52,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:52,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:52,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:52,763 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-04-18 11:02:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:52,797 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-04-18 11:02:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:02:52,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 11:02:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:52,799 INFO L225 Difference]: With dead ends: 262 [2020-04-18 11:02:52,799 INFO L226 Difference]: Without dead ends: 154 [2020-04-18 11:02:52,800 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:52,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-18 11:02:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-18 11:02:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 11:02:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-04-18 11:02:52,812 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-04-18 11:02:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:52,813 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-04-18 11:02:52,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:02:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-04-18 11:02:52,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:02:52,814 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:52,814 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:52,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:52,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:52,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-04-18 11:02:52,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:52,815 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [158237045] [2020-04-18 11:02:52,816 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:52,816 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2020-04-18 11:02:52,817 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:02:52,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:02:52,818 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:52,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:52,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1312113701, now seen corresponding path program 2 times [2020-04-18 11:02:52,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:52,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002866285] [2020-04-18 11:02:52,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:52,880 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 11:02:52,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002866285] [2020-04-18 11:02:52,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:52,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:52,882 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:52,883 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:52,886 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:02:52,886 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:52,899 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:52,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:52,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:02:52,900 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-04-18 11:02:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:52,916 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-18 11:02:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 11:02:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:02:52,917 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 3 times [2020-04-18 11:02:52,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:52,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591416504] [2020-04-18 11:02:52,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:53,013 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 11:02:53,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591416504] [2020-04-18 11:02:53,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:53,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:53,015 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:53,016 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-04-18 11:02:53,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:53,025 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:53,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:53,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:53,026 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-04-18 11:02:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:53,039 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-18 11:02:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 11:02:53,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:53,040 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [158237045] [2020-04-18 11:02:53,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:53,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:53,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [158237045] [2020-04-18 11:02:53,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:02:53,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:53,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:53,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:53,042 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 5 states. [2020-04-18 11:02:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:53,073 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-04-18 11:02:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:02:53,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 11:02:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:53,077 INFO L225 Difference]: With dead ends: 174 [2020-04-18 11:02:53,077 INFO L226 Difference]: Without dead ends: 150 [2020-04-18 11:02:53,078 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-18 11:02:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-18 11:02:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-18 11:02:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-04-18 11:02:53,100 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-04-18 11:02:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:53,101 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-04-18 11:02:53,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:02:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-04-18 11:02:53,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:02:53,102 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:53,104 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:53,104 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-04-18 11:02:53,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:53,105 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1268109511] [2020-04-18 11:02:53,106 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,108 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 96 transitions. [2020-04-18 11:02:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 11:02:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:02:53,109 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 266065162, now seen corresponding path program 2 times [2020-04-18 11:02:53,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:53,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330263019] [2020-04-18 11:02:53,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:53,187 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 11:02:53,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330263019] [2020-04-18 11:02:53,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:53,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:53,189 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:53,190 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,193 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 45 transitions. [2020-04-18 11:02:53,194 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:53,211 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:53,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:53,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:02:53,212 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-04-18 11:02:53,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:53,234 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-04-18 11:02:53,235 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-04-18 11:02:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:02:53,235 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:53,236 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 3 times [2020-04-18 11:02:53,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:53,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89357640] [2020-04-18 11:02:53,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:53,336 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 11:02:53,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89357640] [2020-04-18 11:02:53,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:53,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:53,338 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:53,339 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,342 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-04-18 11:02:53,343 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:53,367 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:53,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:53,368 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 4 states. [2020-04-18 11:02:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:53,381 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-04-18 11:02:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-04-18 11:02:53,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:53,382 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1268109511] [2020-04-18 11:02:53,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:53,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:02:53,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1268109511] [2020-04-18 11:02:53,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:02:53,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:53,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:53,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:53,384 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 6 states. [2020-04-18 11:02:53,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:53,481 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-04-18 11:02:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 11:02:53,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 11:02:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:53,486 INFO L225 Difference]: With dead ends: 164 [2020-04-18 11:02:53,486 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 11:02:53,486 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:02:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 11:02:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 11:02:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 11:02:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-04-18 11:02:53,502 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-04-18 11:02:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:53,502 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-04-18 11:02:53,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:02:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-04-18 11:02:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:02:53,504 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:53,504 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:53,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:53,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:53,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-04-18 11:02:53,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:53,506 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1377633611] [2020-04-18 11:02:53,507 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,508 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 150 transitions. [2020-04-18 11:02:53,510 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 11:02:53,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:02:53,511 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:53,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:53,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1292416845, now seen corresponding path program 2 times [2020-04-18 11:02:53,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:53,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308534277] [2020-04-18 11:02:53,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:53,614 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 11:02:53,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308534277] [2020-04-18 11:02:53,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:53,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:53,616 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:53,618 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,622 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 49 transitions. [2020-04-18 11:02:53,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:53,637 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:53,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:53,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:02:53,638 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-04-18 11:02:53,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:53,658 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 11:02:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 11:02:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:02:53,658 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:53,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 3 times [2020-04-18 11:02:53,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:53,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145706782] [2020-04-18 11:02:53,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:53,740 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 11:02:53,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145706782] [2020-04-18 11:02:53,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:53,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:53,742 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:53,744 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,747 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 59 transitions. [2020-04-18 11:02:53,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:53,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:53,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:53,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:53,772 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 5 states. [2020-04-18 11:02:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:53,799 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 11:02:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 11:02:53,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:53,800 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1377633611] [2020-04-18 11:02:53,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:53,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:02:53,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1377633611] [2020-04-18 11:02:53,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:02:53,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:53,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:53,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:53,802 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 7 states. [2020-04-18 11:02:53,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:53,894 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-04-18 11:02:53,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:02:53,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 11:02:53,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:53,896 INFO L225 Difference]: With dead ends: 116 [2020-04-18 11:02:53,897 INFO L226 Difference]: Without dead ends: 92 [2020-04-18 11:02:53,897 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:02:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-18 11:02:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-18 11:02:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-18 11:02:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-04-18 11:02:53,901 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-04-18 11:02:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:53,902 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-04-18 11:02:53,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:02:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-04-18 11:02:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:53,902 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:53,902 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:53,903 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:53,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:53,903 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-04-18 11:02:53,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:53,904 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1869419792] [2020-04-18 11:02:53,905 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 118 transitions. [2020-04-18 11:02:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 11:02:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:53,908 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:53,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:53,908 INFO L82 PathProgramCache]: Analyzing trace with hash 710821399, now seen corresponding path program 2 times [2020-04-18 11:02:53,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:53,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094186288] [2020-04-18 11:02:53,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:53,968 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 11:02:53,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094186288] [2020-04-18 11:02:53,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:53,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:53,972 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:53,973 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:53,978 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-04-18 11:02:53,979 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:53,994 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:53,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:53,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:02:53,995 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 11:02:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:54,011 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2020-04-18 11:02:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 151 transitions. [2020-04-18 11:02:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:54,012 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:54,013 INFO L82 PathProgramCache]: Analyzing trace with hash 673342399, now seen corresponding path program 3 times [2020-04-18 11:02:54,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:54,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686357434] [2020-04-18 11:02:54,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:54,069 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 11:02:54,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686357434] [2020-04-18 11:02:54,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:54,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:54,070 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:54,071 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:54,075 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 11:02:54,075 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:54,083 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:54,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:54,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:54,084 INFO L87 Difference]: Start difference. First operand 76 states and 151 transitions. Second operand 4 states. [2020-04-18 11:02:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:54,101 INFO L93 Difference]: Finished difference Result 88 states and 171 transitions. [2020-04-18 11:02:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 171 transitions. [2020-04-18 11:02:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:54,101 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:54,102 INFO L82 PathProgramCache]: Analyzing trace with hash 671669119, now seen corresponding path program 4 times [2020-04-18 11:02:54,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:54,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222345693] [2020-04-18 11:02:54,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:54,142 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 11:02:54,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222345693] [2020-04-18 11:02:54,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:54,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:54,144 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:54,144 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:54,148 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 11:02:54,149 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:54,161 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:02:54,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:54,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:54,163 INFO L87 Difference]: Start difference. First operand 88 states and 171 transitions. Second operand 4 states. [2020-04-18 11:02:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:54,184 INFO L93 Difference]: Finished difference Result 88 states and 171 transitions. [2020-04-18 11:02:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 171 transitions. [2020-04-18 11:02:54,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:54,185 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1869419792] [2020-04-18 11:02:54,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:54,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:02:54,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1869419792] [2020-04-18 11:02:54,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:02:54,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:54,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:54,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:02:54,187 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 6 states. [2020-04-18 11:02:54,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:54,212 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-04-18 11:02:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:02:54,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 11:02:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:54,213 INFO L225 Difference]: With dead ends: 120 [2020-04-18 11:02:54,213 INFO L226 Difference]: Without dead ends: 94 [2020-04-18 11:02:54,214 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-04-18 11:02:54,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-04-18 11:02:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-04-18 11:02:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-04-18 11:02:54,217 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-04-18 11:02:54,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:54,217 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-04-18 11:02:54,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:02:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-04-18 11:02:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:54,218 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:54,218 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:54,219 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-04-18 11:02:54,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:54,220 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1468157963] [2020-04-18 11:02:54,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:54,240 INFO L259 McrAutomatonBuilder]: Finished intersection with 130 states and 330 transitions. [2020-04-18 11:02:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-04-18 11:02:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:54,243 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:54,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:54,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1328851933, now seen corresponding path program 2 times [2020-04-18 11:02:54,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:54,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213974719] [2020-04-18 11:02:54,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:54,281 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 11:02:54,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213974719] [2020-04-18 11:02:54,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:54,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:02:54,282 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:54,283 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:54,287 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2020-04-18 11:02:54,288 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:54,303 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:54,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:54,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:02:54,304 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 5 states. [2020-04-18 11:02:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:54,340 INFO L93 Difference]: Finished difference Result 186 states and 450 transitions. [2020-04-18 11:02:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 450 transitions. [2020-04-18 11:02:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:54,341 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:54,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:54,342 INFO L82 PathProgramCache]: Analyzing trace with hash -768644663, now seen corresponding path program 3 times [2020-04-18 11:02:54,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:54,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261346775] [2020-04-18 11:02:54,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:54,378 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 11:02:54,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261346775] [2020-04-18 11:02:54,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:54,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:54,379 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:54,380 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:54,383 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 11:02:54,384 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:54,392 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:54,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:54,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:54,393 INFO L87 Difference]: Start difference. First operand 186 states and 450 transitions. Second operand 4 states. [2020-04-18 11:02:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:54,411 INFO L93 Difference]: Finished difference Result 226 states and 520 transitions. [2020-04-18 11:02:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 520 transitions. [2020-04-18 11:02:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:54,412 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash -804564983, now seen corresponding path program 4 times [2020-04-18 11:02:54,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:54,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343342456] [2020-04-18 11:02:54,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:54,454 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 11:02:54,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343342456] [2020-04-18 11:02:54,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:54,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:54,456 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:54,458 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:54,461 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 11:02:54,461 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:54,496 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:54,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:54,497 INFO L87 Difference]: Start difference. First operand 226 states and 520 transitions. Second operand 5 states. [2020-04-18 11:02:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:54,613 INFO L93 Difference]: Finished difference Result 242 states and 536 transitions. [2020-04-18 11:02:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 536 transitions. [2020-04-18 11:02:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:54,614 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:02:54,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:54,614 INFO L82 PathProgramCache]: Analyzing trace with hash -799092577, now seen corresponding path program 5 times [2020-04-18 11:02:54,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:54,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048572276] [2020-04-18 11:02:54,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:54,675 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 11:02:54,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048572276] [2020-04-18 11:02:54,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:54,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:02:54,676 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:54,677 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:54,680 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 11:02:54,680 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:54,741 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:02:54,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:54,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:02:54,742 INFO L87 Difference]: Start difference. First operand 242 states and 536 transitions. Second operand 7 states. [2020-04-18 11:02:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:54,792 INFO L93 Difference]: Finished difference Result 242 states and 536 transitions. [2020-04-18 11:02:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 536 transitions. [2020-04-18 11:02:54,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:54,794 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1468157963] [2020-04-18 11:02:54,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:54,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:02:54,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1468157963] [2020-04-18 11:02:54,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:02:54,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:54,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:02:54,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:02:54,795 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 11 states. [2020-04-18 11:02:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:55,180 INFO L93 Difference]: Finished difference Result 98 states and 185 transitions. [2020-04-18 11:02:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 11:02:55,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 11:02:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:55,181 INFO L225 Difference]: With dead ends: 98 [2020-04-18 11:02:55,181 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:02:55,182 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 11:02:55,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:02:55,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:02:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:02:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:02:55,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 11:02:55,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:55,184 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:02:55,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:02:55,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:02:55,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:55,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:02:55 BasicIcfg [2020-04-18 11:02:55,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:02:55,190 INFO L168 Benchmark]: Toolchain (without parser) took 6571.44 ms. Allocated memory was 137.4 MB in the beginning and 286.3 MB in the end (delta: 148.9 MB). Free memory was 101.1 MB in the beginning and 113.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 136.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:55,191 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:02:55,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.83 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 99.1 MB in the beginning and 158.5 MB in the end (delta: -59.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:55,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:55,193 INFO L168 Benchmark]: Boogie Preprocessor took 27.91 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:55,194 INFO L168 Benchmark]: RCFGBuilder took 458.22 ms. Allocated memory is still 201.9 MB. Free memory was 155.0 MB in the beginning and 133.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:55,195 INFO L168 Benchmark]: TraceAbstraction took 5202.80 ms. Allocated memory was 201.9 MB in the beginning and 286.3 MB in the end (delta: 84.4 MB). Free memory was 133.0 MB in the beginning and 113.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 103.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:55,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 801.83 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 99.1 MB in the beginning and 158.5 MB in the end (delta: -59.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.91 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.22 ms. Allocated memory is still 201.9 MB. Free memory was 155.0 MB in the beginning and 133.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5202.80 ms. Allocated memory was 201.9 MB in the beginning and 286.3 MB in the end (delta: 84.4 MB). Free memory was 133.0 MB in the beginning and 113.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 103.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 163 SDtfs, 170 SDslu, 368 SDs, 0 SdLazy, 247 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 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...