/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-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:39:46,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:39:46,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:39:46,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:39:46,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:39:46,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:39:46,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:39:46,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:39:46,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:39:46,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:39:46,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:39:46,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:39:46,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:39:46,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:39:46,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:39:46,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:39:46,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:39:46,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:39:46,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:39:46,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:39:46,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:39:46,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:39:46,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:39:46,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:39:46,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:39:46,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:39:46,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:39:46,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:39:46,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:39:46,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:39:46,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:39:46,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:39:46,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:39:46,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:39:46,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:39:46,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:39:46,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:39:46,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:39:46,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:39:46,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:39:46,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:39:46,417 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 11:39:46,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:39:46,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:39:46,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:39:46,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:39:46,433 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:39:46,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:39:46,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:39:46,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:39:46,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:39:46,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:39:46,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:39:46,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:39:46,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:39:46,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:39:46,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:39:46,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:39:46,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:39:46,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:39:46,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:39:46,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:39:46,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:39:46,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:39:46,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:39:46,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:39:46,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:39:46,437 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:39:46,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:39:46,437 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:39:46,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:39:46,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:39:46,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:39:46,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:39:46,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:39:46,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:39:46,733 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:39:46,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2020-04-18 11:39:46,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5873dfc75/88f3cd0ba8624a53aa1af70e50700415/FLAG49939f507 [2020-04-18 11:39:47,436 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:39:47,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2020-04-18 11:39:47,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5873dfc75/88f3cd0ba8624a53aa1af70e50700415/FLAG49939f507 [2020-04-18 11:39:47,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5873dfc75/88f3cd0ba8624a53aa1af70e50700415 [2020-04-18 11:39:47,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:39:47,712 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:39:47,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:39:47,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:39:47,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:39:47,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:39:47" (1/1) ... [2020-04-18 11:39:47,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ea8e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:47, skipping insertion in model container [2020-04-18 11:39:47,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:39:47" (1/1) ... [2020-04-18 11:39:47,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:39:47,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:39:47,953 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-04-18 11:39:48,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:39:48,319 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:39:48,331 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-04-18 11:39:48,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:39:48,475 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:39:48,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48 WrapperNode [2020-04-18 11:39:48,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:39:48,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:39:48,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:39:48,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:39:48,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:39:48,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:39:48,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:39:48,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:39:48,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (1/1) ... [2020-04-18 11:39:48,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:39:48,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:39:48,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:39:48,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:39:48,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (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 11:39:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2020-04-18 11:39:48,713 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2020-04-18 11:39:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:39:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:39:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 11:39:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:39:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:39:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:39:48,719 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 11:39:49,282 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:39:49,282 INFO L295 CfgBuilder]: Removed 19 assume(true) statements. [2020-04-18 11:39:49,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:39:49 BoogieIcfgContainer [2020-04-18 11:39:49,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:39:49,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:39:49,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:39:49,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:39:49,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:39:47" (1/3) ... [2020-04-18 11:39:49,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194eb904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:39:49, skipping insertion in model container [2020-04-18 11:39:49,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:39:48" (2/3) ... [2020-04-18 11:39:49,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194eb904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:39:49, skipping insertion in model container [2020-04-18 11:39:49,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:39:49" (3/3) ... [2020-04-18 11:39:49,304 INFO L109 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2020-04-18 11:39:49,316 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:39:49,316 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:39:49,325 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-04-18 11:39:49,326 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:39:49,355 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,356 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,356 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,356 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,357 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,357 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,357 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,357 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,358 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,358 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,358 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,359 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,359 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,359 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,360 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,360 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,360 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,360 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,360 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,361 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,361 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,361 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,361 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,361 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,362 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,362 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,362 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,362 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,362 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,363 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,363 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,363 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,363 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,364 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,364 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,364 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,364 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,364 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,365 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,365 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,365 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,365 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,366 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,366 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,366 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,366 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,367 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,367 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,367 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,367 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,368 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,368 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,368 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,368 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,369 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,369 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,369 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,369 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,369 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,370 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,370 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,370 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,370 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,371 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,371 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,371 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,371 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,372 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,372 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,372 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,372 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,373 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,373 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,373 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,373 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,374 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,374 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,374 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,374 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,374 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,375 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,375 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,375 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,375 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,376 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,376 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,376 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,376 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,377 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,377 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,377 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,377 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,378 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,378 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,378 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,378 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,378 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,379 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,379 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,379 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,380 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,380 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,380 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,380 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,380 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,381 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,381 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,381 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,382 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,382 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,382 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,382 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,383 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,383 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,383 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,383 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,384 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,384 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,384 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,384 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,384 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,385 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,385 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,386 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,386 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,386 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,386 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,387 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,392 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,393 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,393 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,394 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,394 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,395 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,395 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,395 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,395 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,396 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,396 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,396 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,396 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,397 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,397 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,397 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,397 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,398 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,398 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,398 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,398 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,399 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,399 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,399 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,399 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,399 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,400 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,400 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,400 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:39:49,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 11:39:49,447 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:39:49,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:39:49,447 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:39:49,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:39:49,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:39:49,447 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:39:49,448 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:39:49,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:39:49,473 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 128 transitions, 264 flow [2020-04-18 11:39:49,475 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 264 flow [2020-04-18 11:39:49,561 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2020-04-18 11:39:49,562 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-04-18 11:39:49,572 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 127 events. 10/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 245 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2020-04-18 11:39:49,578 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 264 flow [2020-04-18 11:39:49,606 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2020-04-18 11:39:49,607 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-04-18 11:39:49,611 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 127 events. 10/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 245 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2020-04-18 11:39:49,618 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4968 [2020-04-18 11:39:49,619 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:39:49,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:39:49,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:39:49,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:39:49,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:39:52,188 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-04-18 11:39:52,961 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5902 [2020-04-18 11:39:52,962 INFO L214 etLargeBlockEncoding]: Total number of compositions: 114 [2020-04-18 11:39:52,966 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 34 transitions, 76 flow [2020-04-18 11:39:52,981 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 139 states. [2020-04-18 11:39:52,983 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-04-18 11:39:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-18 11:39:52,990 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:39:52,991 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-18 11:39:52,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:39:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash 486263513, now seen corresponding path program 1 times [2020-04-18 11:39:53,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:39:53,005 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1230151870] [2020-04-18 11:39:53,021 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:53,033 INFO L259 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-04-18 11:39:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-04-18 11:39:53,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-18 11:39:53,036 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:39:53,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:53,036 INFO L82 PathProgramCache]: Analyzing trace with hash 486263513, now seen corresponding path program 2 times [2020-04-18 11:39:53,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:39:53,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287960453] [2020-04-18 11:39:53,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:39:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:39:53,201 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 11:39:53,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287960453] [2020-04-18 11:39:53,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:39:53,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:39:53,206 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:39:53,207 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:53,209 INFO L259 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-04-18 11:39:53,209 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:39:53,215 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:39:53,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:39:53,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:39:53,221 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 2 states. [2020-04-18 11:39:53,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:39:53,226 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-04-18 11:39:53,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2020-04-18 11:39:53,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:39:53,227 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1230151870] [2020-04-18 11:39:53,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:39:53,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:39:53,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1230151870] [2020-04-18 11:39:53,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:39:53,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:39:53,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:39:53,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:39:53,250 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 2 states. [2020-04-18 11:39:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:39:53,261 INFO L93 Difference]: Finished difference Result 139 states and 298 transitions. [2020-04-18 11:39:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:39:53,263 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-04-18 11:39:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:39:53,276 INFO L225 Difference]: With dead ends: 139 [2020-04-18 11:39:53,276 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 11:39:53,277 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 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 11:39:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 11:39:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 11:39:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 11:39:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 277 transitions. [2020-04-18 11:39:53,354 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 277 transitions. Word has length 5 [2020-04-18 11:39:53,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:39:53,355 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 277 transitions. [2020-04-18 11:39:53,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:39:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 277 transitions. [2020-04-18 11:39:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:39:53,356 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:39:53,356 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:39:53,356 INFO L427 AbstractCegarLoop]: === Iteration 2 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:39:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:53,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2105704442, now seen corresponding path program 1 times [2020-04-18 11:39:53,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:39:53,357 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1174465104] [2020-04-18 11:39:53,358 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:53,358 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:39:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:39:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:39:53,359 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:39:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2105704442, now seen corresponding path program 2 times [2020-04-18 11:39:53,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:39:53,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850032504] [2020-04-18 11:39:53,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:39:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:39:53,431 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 11:39:53,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850032504] [2020-04-18 11:39:53,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:39:53,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:39:53,432 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:39:53,433 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:53,433 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:39:53,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:39:53,460 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:39:53,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:39:53,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:39:53,461 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 11:39:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:39:53,463 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:39:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:39:53,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:39:53,463 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1174465104] [2020-04-18 11:39:53,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:39:53,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:39:53,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1174465104] [2020-04-18 11:39:53,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:39:53,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:39:53,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:39:53,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:39:53,466 INFO L87 Difference]: Start difference. First operand 128 states and 277 transitions. Second operand 3 states. [2020-04-18 11:39:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:39:53,511 INFO L93 Difference]: Finished difference Result 200 states and 438 transitions. [2020-04-18 11:39:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:39:53,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 11:39:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:39:53,515 INFO L225 Difference]: With dead ends: 200 [2020-04-18 11:39:53,515 INFO L226 Difference]: Without dead ends: 200 [2020-04-18 11:39:53,519 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:39:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-04-18 11:39:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 155. [2020-04-18 11:39:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-04-18 11:39:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 343 transitions. [2020-04-18 11:39:53,544 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 343 transitions. Word has length 6 [2020-04-18 11:39:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:39:53,544 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 343 transitions. [2020-04-18 11:39:53,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:39:53,545 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 343 transitions. [2020-04-18 11:39:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:39:53,546 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:39:53,546 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:39:53,546 INFO L427 AbstractCegarLoop]: === Iteration 3 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:39:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:53,547 INFO L82 PathProgramCache]: Analyzing trace with hash 282683680, now seen corresponding path program 1 times [2020-04-18 11:39:53,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:39:53,548 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1405736620] [2020-04-18 11:39:53,548 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:53,549 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:39:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:39:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:39:53,550 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:39:53,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:53,551 INFO L82 PathProgramCache]: Analyzing trace with hash 282683680, now seen corresponding path program 2 times [2020-04-18 11:39:53,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:39:53,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770654531] [2020-04-18 11:39:53,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:39:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:39:53,767 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 11:39:53,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770654531] [2020-04-18 11:39:53,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:39:53,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:39:53,768 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:39:53,770 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:53,772 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:39:53,772 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:39:53,823 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:39:53,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:39:53,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:39:53,824 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 7 states. [2020-04-18 11:39:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:39:53,949 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:39:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:39:53,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:39:53,950 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1405736620] [2020-04-18 11:39:53,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:39:53,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 11:39:53,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1405736620] [2020-04-18 11:39:53,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:39:53,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:39:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:39:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:39:53,951 INFO L87 Difference]: Start difference. First operand 155 states and 343 transitions. Second operand 7 states. [2020-04-18 11:39:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:39:54,238 INFO L93 Difference]: Finished difference Result 181 states and 391 transitions. [2020-04-18 11:39:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:39:54,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 11:39:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:39:54,240 INFO L225 Difference]: With dead ends: 181 [2020-04-18 11:39:54,240 INFO L226 Difference]: Without dead ends: 162 [2020-04-18 11:39:54,241 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:39:54,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-04-18 11:39:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-04-18 11:39:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 11:39:54,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 359 transitions. [2020-04-18 11:39:54,254 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 359 transitions. Word has length 10 [2020-04-18 11:39:54,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:39:54,255 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 359 transitions. [2020-04-18 11:39:54,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:39:54,255 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 359 transitions. [2020-04-18 11:39:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:39:54,259 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:39:54,259 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:39:54,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:39:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1366120806, now seen corresponding path program 1 times [2020-04-18 11:39:54,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:39:54,260 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [989879926] [2020-04-18 11:39:54,261 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:54,262 INFO L259 McrAutomatonBuilder]: Finished intersection with 65 states and 112 transitions. [2020-04-18 11:39:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-04-18 11:39:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:39:54,264 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:39:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:54,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1366120806, now seen corresponding path program 2 times [2020-04-18 11:39:54,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:39:54,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475822704] [2020-04-18 11:39:54,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:39:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:39:54,811 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 11:39:54,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475822704] [2020-04-18 11:39:54,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:39:54,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-04-18 11:39:54,812 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:39:54,815 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:54,821 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-04-18 11:39:54,821 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:39:55,163 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:39:55,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:39:55,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:39:55,164 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 17 states. [2020-04-18 11:39:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:39:57,257 INFO L93 Difference]: Finished difference Result 65 states and 112 transitions. [2020-04-18 11:39:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 112 transitions. [2020-04-18 11:39:57,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:39:57,259 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [989879926] [2020-04-18 11:39:57,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:39:57,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-04-18 11:39:57,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [989879926] [2020-04-18 11:39:57,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 11:39:57,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:39:57,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 11:39:57,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 11:39:57,262 INFO L87 Difference]: Start difference. First operand 162 states and 359 transitions. Second operand 17 states. [2020-04-18 11:39:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:39:57,926 INFO L93 Difference]: Finished difference Result 180 states and 384 transitions. [2020-04-18 11:39:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 11:39:57,927 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-04-18 11:39:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:39:57,928 INFO L225 Difference]: With dead ends: 180 [2020-04-18 11:39:57,928 INFO L226 Difference]: Without dead ends: 170 [2020-04-18 11:39:57,929 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 11:39:57,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-18 11:39:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-18 11:39:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 11:39:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 371 transitions. [2020-04-18 11:39:57,944 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 371 transitions. Word has length 16 [2020-04-18 11:39:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:39:57,945 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 371 transitions. [2020-04-18 11:39:57,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 11:39:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 371 transitions. [2020-04-18 11:39:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:39:57,946 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:39:57,946 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:39:57,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:39:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:57,947 INFO L82 PathProgramCache]: Analyzing trace with hash 145495381, now seen corresponding path program 1 times [2020-04-18 11:39:57,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:39:57,947 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1915372234] [2020-04-18 11:39:57,948 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:57,949 INFO L259 McrAutomatonBuilder]: Finished intersection with 83 states and 146 transitions. [2020-04-18 11:39:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-04-18 11:39:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:39:57,951 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:39:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:39:57,951 INFO L82 PathProgramCache]: Analyzing trace with hash 145495381, now seen corresponding path program 2 times [2020-04-18 11:39:57,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:39:57,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950481131] [2020-04-18 11:39:57,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:39:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:39:58,869 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 11:39:58,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950481131] [2020-04-18 11:39:58,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:39:58,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 11:39:58,870 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:39:58,873 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:39:58,881 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 50 transitions. [2020-04-18 11:39:58,881 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:39:59,579 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 11:39:59,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 11:39:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:39:59,580 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 23 states. [2020-04-18 11:40:01,441 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-04-18 11:40:01,852 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-04-18 11:40:02,540 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-04-18 11:40:02,855 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-04-18 11:40:03,041 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-04-18 11:40:03,426 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2020-04-18 11:40:03,686 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-04-18 11:40:04,077 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-04-18 11:40:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:40:04,507 INFO L93 Difference]: Finished difference Result 95 states and 163 transitions. [2020-04-18 11:40:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 163 transitions. [2020-04-18 11:40:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:40:04,508 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:40:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:40:04,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1605320537, now seen corresponding path program 3 times [2020-04-18 11:40:04,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:40:04,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741210731] [2020-04-18 11:40:04,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:40:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:40:04,742 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 11:40:04,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741210731] [2020-04-18 11:40:04,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:40:04,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 11:40:04,743 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:40:04,746 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:40:04,755 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 78 transitions. [2020-04-18 11:40:04,756 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:40:06,438 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 11:40:06,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 11:40:06,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=3719, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 11:40:06,441 INFO L87 Difference]: Start difference. First operand 95 states and 163 transitions. Second operand 23 states. [2020-04-18 11:40:07,444 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2020-04-18 11:40:07,818 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 35 [2020-04-18 11:40:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:40:08,763 INFO L93 Difference]: Finished difference Result 110 states and 185 transitions. [2020-04-18 11:40:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 185 transitions. [2020-04-18 11:40:08,764 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:40:08,765 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1915372234] [2020-04-18 11:40:08,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:40:08,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 11:40:08,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1915372234] [2020-04-18 11:40:08,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-04-18 11:40:08,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:40:08,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-04-18 11:40:08,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=5069, Unknown=0, NotChecked=0, Total=5852 [2020-04-18 11:40:08,769 INFO L87 Difference]: Start difference. First operand 170 states and 371 transitions. Second operand 43 states. [2020-04-18 11:40:09,789 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 46 [2020-04-18 11:40:10,146 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 50 [2020-04-18 11:40:10,652 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 51 [2020-04-18 11:40:11,036 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 53 [2020-04-18 11:40:11,544 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 58 [2020-04-18 11:40:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:40:14,117 INFO L93 Difference]: Finished difference Result 247 states and 529 transitions. [2020-04-18 11:40:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-04-18 11:40:14,118 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 18 [2020-04-18 11:40:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:40:14,121 INFO L225 Difference]: With dead ends: 247 [2020-04-18 11:40:14,121 INFO L226 Difference]: Without dead ends: 247 [2020-04-18 11:40:14,124 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2327 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1098, Invalid=7092, Unknown=0, NotChecked=0, Total=8190 [2020-04-18 11:40:14,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-04-18 11:40:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 222. [2020-04-18 11:40:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-04-18 11:40:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 489 transitions. [2020-04-18 11:40:14,135 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 489 transitions. Word has length 18 [2020-04-18 11:40:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:40:14,136 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 489 transitions. [2020-04-18 11:40:14,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-04-18 11:40:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 489 transitions. [2020-04-18 11:40:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:40:14,137 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:40:14,137 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:40:14,137 INFO L427 AbstractCegarLoop]: === Iteration 6 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:40:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:40:14,138 INFO L82 PathProgramCache]: Analyzing trace with hash 831318896, now seen corresponding path program 1 times [2020-04-18 11:40:14,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:40:14,138 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [324911566] [2020-04-18 11:40:14,139 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:40:14,140 INFO L259 McrAutomatonBuilder]: Finished intersection with 110 states and 197 transitions. [2020-04-18 11:40:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-04-18 11:40:14,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:40:14,142 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:40:14,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:40:14,142 INFO L82 PathProgramCache]: Analyzing trace with hash 831318896, now seen corresponding path program 2 times [2020-04-18 11:40:14,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:40:14,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589242218] [2020-04-18 11:40:14,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:40:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:40:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:40:14,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589242218] [2020-04-18 11:40:14,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949492777] [2020-04-18 11:40:14,188 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:40:14,260 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:40:14,261 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:40:14,263 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2020-04-18 11:40:14,269 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:40:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:40:14,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:40:14,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-04-18 11:40:14,294 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:40:14,297 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:40:14,303 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-04-18 11:40:14,303 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:40:14,321 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:40:14,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:40:14,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:40:14,322 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 5 states. [2020-04-18 11:40:14,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:40:14,334 INFO L93 Difference]: Finished difference Result 110 states and 197 transitions. [2020-04-18 11:40:14,334 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 197 transitions. [2020-04-18 11:40:14,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:40:14,335 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [324911566] [2020-04-18 11:40:14,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:40:14,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:40:14,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [324911566] [2020-04-18 11:40:14,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:40:14,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:40:14,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:40:14,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:40:14,337 INFO L87 Difference]: Start difference. First operand 222 states and 489 transitions. Second operand 5 states. [2020-04-18 11:40:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:40:14,354 INFO L93 Difference]: Finished difference Result 326 states and 718 transitions. [2020-04-18 11:40:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:40:14,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 11:40:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:40:14,357 INFO L225 Difference]: With dead ends: 326 [2020-04-18 11:40:14,358 INFO L226 Difference]: Without dead ends: 326 [2020-04-18 11:40:14,359 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:40:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-04-18 11:40:14,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278. [2020-04-18 11:40:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-04-18 11:40:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 624 transitions. [2020-04-18 11:40:14,383 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 624 transitions. Word has length 21 [2020-04-18 11:40:14,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:40:14,384 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 624 transitions. [2020-04-18 11:40:14,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:40:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 624 transitions. [2020-04-18 11:40:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:40:14,386 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:40:14,387 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:40:14,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:40:14,590 INFO L427 AbstractCegarLoop]: === Iteration 7 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:40:14,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:40:14,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1273193156, now seen corresponding path program 4 times [2020-04-18 11:40:14,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:40:14,592 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1267686906] [2020-04-18 11:40:14,593 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:40:14,594 INFO L259 McrAutomatonBuilder]: Finished intersection with 128 states and 231 transitions. [2020-04-18 11:40:14,595 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-04-18 11:40:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:40:14,595 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:40:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:40:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1273193156, now seen corresponding path program 5 times [2020-04-18 11:40:14,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:40:14,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992395822] [2020-04-18 11:40:14,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:40:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:40:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:40:15,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992395822] [2020-04-18 11:40:15,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621005143] [2020-04-18 11:40:15,897 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:40:15,966 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:40:15,967 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:40:15,969 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-18 11:40:15,971 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:40:16,028 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 11:40:16,029 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:16,049 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 11:40:16,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,059 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 11:40:16,059 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:16,068 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:16,070 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:16,070 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 11:40:16,641 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,642 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,643 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:40:16,669 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:16,669 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 11:40:16,673 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:16,738 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-18 11:40:16,739 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:16,739 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-18 11:40:16,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:40:16,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:40:16,909 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,913 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,935 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,937 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 11:40:16,938 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:16,953 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,957 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,982 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,984 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-18 11:40:16,984 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:16,991 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,993 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,995 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:16,996 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 11:40:16,997 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:17,015 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:17,016 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:17,016 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-18 11:40:17,270 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:17,270 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-18 11:40:17,271 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:17,331 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-18 11:40:17,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:40:17,333 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:17,334 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-18 11:40:17,496 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:17,496 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-18 11:40:17,497 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:17,503 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:17,503 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:40:17,503 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-18 11:40:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:40:17,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:40:17,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2020-04-18 11:40:17,529 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:40:17,533 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:40:17,544 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 75 transitions. [2020-04-18 11:40:17,544 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:40:20,765 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 40 times. [2020-04-18 11:40:20,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-04-18 11:40:20,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2773, Unknown=0, NotChecked=0, Total=2970 [2020-04-18 11:40:20,767 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 55 states. [2020-04-18 11:40:22,603 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-04-18 11:40:23,936 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2020-04-18 11:40:24,845 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 57 [2020-04-18 11:40:25,815 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2020-04-18 11:40:28,152 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-04-18 11:40:28,609 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-04-18 11:40:29,120 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2020-04-18 11:40:29,468 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 70 [2020-04-18 11:40:30,332 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-04-18 11:40:30,651 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2020-04-18 11:40:31,187 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 59 [2020-04-18 11:40:32,271 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-04-18 11:40:32,833 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2020-04-18 11:40:33,887 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-04-18 11:40:35,069 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-04-18 11:40:35,951 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-04-18 11:40:36,917 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-04-18 11:40:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:40:38,832 INFO L93 Difference]: Finished difference Result 160 states and 283 transitions. [2020-04-18 11:40:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 283 transitions. [2020-04-18 11:40:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 11:40:38,834 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:40:38,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:40:38,834 INFO L82 PathProgramCache]: Analyzing trace with hash -337363156, now seen corresponding path program 6 times [2020-04-18 11:40:38,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:40:38,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480233081] [2020-04-18 11:40:38,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:40:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:40:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 11:40:39,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480233081] [2020-04-18 11:40:39,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:40:39,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 11:40:39,023 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:40:39,026 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:40:39,037 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 87 transitions. [2020-04-18 11:40:39,038 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:40:41,329 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 11:40:41,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:40:41,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1249, Invalid=10741, Unknown=0, NotChecked=0, Total=11990 [2020-04-18 11:40:41,333 INFO L87 Difference]: Start difference. First operand 160 states and 283 transitions. Second operand 19 states. [2020-04-18 11:40:42,620 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2020-04-18 11:40:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:40:43,525 INFO L93 Difference]: Finished difference Result 200 states and 350 transitions. [2020-04-18 11:40:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 350 transitions. [2020-04-18 11:40:43,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:40:43,526 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1267686906] [2020-04-18 11:40:43,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:40:43,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 11:40:43,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1267686906] [2020-04-18 11:40:43,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-04-18 11:40:43,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:40:43,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-04-18 11:40:43,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1461, Invalid=13059, Unknown=0, NotChecked=0, Total=14520 [2020-04-18 11:40:43,531 INFO L87 Difference]: Start difference. First operand 278 states and 624 transitions. Second operand 71 states. [2020-04-18 11:40:44,299 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 48 [2020-04-18 11:40:44,775 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 56 [2020-04-18 11:40:45,233 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2020-04-18 11:40:45,975 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 61 [2020-04-18 11:40:46,479 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 65 [2020-04-18 11:40:47,207 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 70 [2020-04-18 11:40:47,469 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 46 [2020-04-18 11:40:48,481 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 56 [2020-04-18 11:40:48,904 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 59 [2020-04-18 11:40:49,454 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 49 [2020-04-18 11:40:51,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:40:51,706 INFO L93 Difference]: Finished difference Result 354 states and 745 transitions. [2020-04-18 11:40:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-04-18 11:40:51,710 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 23 [2020-04-18 11:40:51,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:40:51,713 INFO L225 Difference]: With dead ends: 354 [2020-04-18 11:40:51,713 INFO L226 Difference]: Without dead ends: 345 [2020-04-18 11:40:51,718 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6323 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=1991, Invalid=17469, Unknown=0, NotChecked=0, Total=19460 [2020-04-18 11:40:51,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-04-18 11:40:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 302. [2020-04-18 11:40:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-04-18 11:40:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 657 transitions. [2020-04-18 11:40:51,728 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 657 transitions. Word has length 23 [2020-04-18 11:40:51,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:40:51,728 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 657 transitions. [2020-04-18 11:40:51,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-04-18 11:40:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 657 transitions. [2020-04-18 11:40:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:40:51,729 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:40:51,730 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:40:51,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:40:51,933 INFO L427 AbstractCegarLoop]: === Iteration 8 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:40:51,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:40:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash 2090449835, now seen corresponding path program 7 times [2020-04-18 11:40:51,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:40:51,934 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1029897439] [2020-04-18 11:40:51,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:40:51,938 INFO L259 McrAutomatonBuilder]: Finished intersection with 146 states and 265 transitions. [2020-04-18 11:40:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-04-18 11:40:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:40:51,940 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:40:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:40:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2090449835, now seen corresponding path program 8 times [2020-04-18 11:40:51,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:40:51,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248853650] [2020-04-18 11:40:51,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:40:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:40:52,560 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2020-04-18 11:40:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:40:53,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248853650] [2020-04-18 11:40:53,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285089301] [2020-04-18 11:40:53,389 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:40:53,466 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:40:53,467 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:40:53,469 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 96 conjunts are in the unsatisfiable core [2020-04-18 11:40:53,471 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:40:53,482 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 11:40:53,483 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:53,532 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 11:40:53,537 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:53,539 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 11:40:53,539 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:53,548 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:53,549 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:53,549 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 11:40:54,017 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,018 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,019 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:40:54,047 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:54,048 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 11:40:54,049 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:54,114 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-18 11:40:54,115 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:54,116 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-18 11:40:54,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:40:54,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:40:54,268 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,270 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,272 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,301 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-18 11:40:54,302 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:54,312 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,313 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,314 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,335 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,337 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 11:40:54,338 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:54,344 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,346 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,348 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 11:40:54,349 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:54,368 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:54,369 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:54,369 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-18 11:40:54,601 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,602 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,603 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:40:54,645 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:54,646 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 120 [2020-04-18 11:40:54,647 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:54,704 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-18 11:40:54,705 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:54,706 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-18 11:40:54,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:40:54,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:40:54,839 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-18 11:40:54,840 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:54,870 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2020-04-18 11:40:54,871 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:54,888 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2020-04-18 11:40:54,889 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:54,952 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-18 11:40:54,954 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-18 11:40:54,954 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:212, output treesize:46 [2020-04-18 11:40:55,125 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:55,126 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2020-04-18 11:40:55,127 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:40:55,134 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:40:55,135 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:40:55,135 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:7 [2020-04-18 11:40:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:40:55,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:40:55,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 35 [2020-04-18 11:40:55,212 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:40:55,216 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:40:55,229 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 85 transitions. [2020-04-18 11:40:55,229 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:40:58,666 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 44 times. [2020-04-18 11:40:58,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-04-18 11:40:58,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=3333, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 11:40:58,668 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 60 states. [2020-04-18 11:40:59,921 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2020-04-18 11:41:00,658 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-04-18 11:41:02,109 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2020-04-18 11:41:03,069 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 57 [2020-04-18 11:41:04,067 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2020-04-18 11:41:06,729 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2020-04-18 11:41:07,860 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2020-04-18 11:41:08,213 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2020-04-18 11:41:09,205 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-04-18 11:41:09,562 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2020-04-18 11:41:10,201 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 61 [2020-04-18 11:41:11,293 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2020-04-18 11:41:11,948 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2020-04-18 11:41:13,106 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2020-04-18 11:41:14,832 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2020-04-18 11:41:16,176 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-04-18 11:41:17,327 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2020-04-18 11:41:18,322 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2020-04-18 11:41:19,250 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-04-18 11:41:19,538 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2020-04-18 11:41:20,482 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-04-18 11:41:20,943 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-04-18 11:41:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:41:22,072 INFO L93 Difference]: Finished difference Result 186 states and 331 transitions. [2020-04-18 11:41:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 331 transitions. [2020-04-18 11:41:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:41:22,073 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:41:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:41:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2083432165, now seen corresponding path program 9 times [2020-04-18 11:41:22,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:41:22,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693883039] [2020-04-18 11:41:22,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:41:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:41:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 11:41:22,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693883039] [2020-04-18 11:41:22,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:41:22,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 11:41:22,266 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:41:22,273 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:41:22,291 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 89 transitions. [2020-04-18 11:41:22,291 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:41:25,148 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 11:41:25,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:41:25,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1349, Invalid=12693, Unknown=0, NotChecked=0, Total=14042 [2020-04-18 11:41:25,150 INFO L87 Difference]: Start difference. First operand 186 states and 331 transitions. Second operand 19 states. [2020-04-18 11:41:26,386 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2020-04-18 11:41:27,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:41:27,298 INFO L93 Difference]: Finished difference Result 236 states and 416 transitions. [2020-04-18 11:41:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 416 transitions. [2020-04-18 11:41:27,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:41:27,300 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1029897439] [2020-04-18 11:41:27,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:41:27,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 11:41:27,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1029897439] [2020-04-18 11:41:27,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-04-18 11:41:27,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:41:27,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-04-18 11:41:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1558, Invalid=15212, Unknown=0, NotChecked=0, Total=16770 [2020-04-18 11:41:27,302 INFO L87 Difference]: Start difference. First operand 302 states and 657 transitions. Second operand 76 states. [2020-04-18 11:41:28,110 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 48 [2020-04-18 11:41:28,641 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 56 [2020-04-18 11:41:29,124 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2020-04-18 11:41:29,879 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 61 [2020-04-18 11:41:30,421 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 65 [2020-04-18 11:41:31,007 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 70 [2020-04-18 11:41:32,127 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2020-04-18 11:41:32,653 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 67 [2020-04-18 11:41:33,300 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 50 [2020-04-18 11:41:34,320 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-04-18 11:41:34,594 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-04-18 11:41:35,971 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2020-04-18 11:41:36,541 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-04-18 11:41:37,102 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-04-18 11:41:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:41:37,902 INFO L93 Difference]: Finished difference Result 409 states and 866 transitions. [2020-04-18 11:41:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-04-18 11:41:37,908 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 25 [2020-04-18 11:41:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:41:37,911 INFO L225 Difference]: With dead ends: 409 [2020-04-18 11:41:37,911 INFO L226 Difference]: Without dead ends: 409 [2020-04-18 11:41:37,913 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7052 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=2049, Invalid=20003, Unknown=0, NotChecked=0, Total=22052 [2020-04-18 11:41:37,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-04-18 11:41:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 341. [2020-04-18 11:41:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-04-18 11:41:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 743 transitions. [2020-04-18 11:41:37,930 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 743 transitions. Word has length 25 [2020-04-18 11:41:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:41:37,931 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 743 transitions. [2020-04-18 11:41:37,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-04-18 11:41:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 743 transitions. [2020-04-18 11:41:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:41:37,932 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:41:37,932 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:41:38,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:41:38,144 INFO L427 AbstractCegarLoop]: === Iteration 9 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:41:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:41:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1978593398, now seen corresponding path program 1 times [2020-04-18 11:41:38,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:41:38,145 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1043328318] [2020-04-18 11:41:38,146 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:41:38,147 INFO L259 McrAutomatonBuilder]: Finished intersection with 146 states and 265 transitions. [2020-04-18 11:41:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-04-18 11:41:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:41:38,149 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:41:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:41:38,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1978593398, now seen corresponding path program 2 times [2020-04-18 11:41:38,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:41:38,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929100676] [2020-04-18 11:41:38,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:41:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:41:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:41:38,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929100676] [2020-04-18 11:41:38,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302539871] [2020-04-18 11:41:38,965 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:41:39,039 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 11:41:39,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:41:39,042 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 81 conjunts are in the unsatisfiable core [2020-04-18 11:41:39,045 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:41:39,060 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 11:41:39,061 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 11:41:39,090 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 11:41:39,095 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:39,096 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 11:41:39,096 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:39,107 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:39,108 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:39,108 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 11:41:39,404 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:39,435 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:39,436 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 11:41:39,437 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:39,504 INFO L619 ElimStorePlain]: treesize reduction 46, result has 51.6 percent of original size [2020-04-18 11:41:39,505 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:39,506 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:62, output treesize:46 [2020-04-18 11:41:39,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:39,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:39,694 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:39,712 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2020-04-18 11:41:39,713 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:39,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:39,743 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2020-04-18 11:41:39,745 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:39,754 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2020-04-18 11:41:39,755 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:39,774 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:39,775 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:39,775 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:210, output treesize:36 [2020-04-18 11:41:40,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:40,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:40,094 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:41:40,096 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:40,098 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2020-04-18 11:41:40,099 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:40,133 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:41:40,137 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:40,139 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2020-04-18 11:41:40,140 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:40,150 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2020-04-18 11:41:40,155 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:40,176 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:40,177 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:40,178 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:210, output treesize:36 [2020-04-18 11:41:40,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:41:40,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:41:40,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2020-04-18 11:41:40,311 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:41:40,315 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:41:40,326 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 57 transitions. [2020-04-18 11:41:40,326 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:41:42,039 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 11:41:42,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-04-18 11:41:42,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 11:41:42,040 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 43 states. [2020-04-18 11:41:43,674 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-04-18 11:41:44,201 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-04-18 11:41:44,939 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 57 [2020-04-18 11:41:45,202 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2020-04-18 11:41:45,438 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-04-18 11:41:46,021 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2020-04-18 11:41:46,303 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-04-18 11:41:46,739 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2020-04-18 11:41:47,071 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-04-18 11:41:47,455 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2020-04-18 11:41:47,780 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-04-18 11:41:48,297 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2020-04-18 11:41:48,621 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2020-04-18 11:41:49,102 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2020-04-18 11:41:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:41:50,011 INFO L93 Difference]: Finished difference Result 154 states and 273 transitions. [2020-04-18 11:41:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 273 transitions. [2020-04-18 11:41:50,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:41:50,012 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1043328318] [2020-04-18 11:41:50,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:41:50,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-04-18 11:41:50,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1043328318] [2020-04-18 11:41:50,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-04-18 11:41:50,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:41:50,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-04-18 11:41:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=4887, Unknown=0, NotChecked=0, Total=5700 [2020-04-18 11:41:50,015 INFO L87 Difference]: Start difference. First operand 341 states and 743 transitions. Second operand 43 states. [2020-04-18 11:41:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:41:51,832 INFO L93 Difference]: Finished difference Result 378 states and 812 transitions. [2020-04-18 11:41:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 11:41:51,838 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 25 [2020-04-18 11:41:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:41:51,841 INFO L225 Difference]: With dead ends: 378 [2020-04-18 11:41:51,841 INFO L226 Difference]: Without dead ends: 357 [2020-04-18 11:41:51,842 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=813, Invalid=4887, Unknown=0, NotChecked=0, Total=5700 [2020-04-18 11:41:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-04-18 11:41:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2020-04-18 11:41:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-04-18 11:41:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 778 transitions. [2020-04-18 11:41:51,851 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 778 transitions. Word has length 25 [2020-04-18 11:41:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:41:51,852 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 778 transitions. [2020-04-18 11:41:51,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-04-18 11:41:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 778 transitions. [2020-04-18 11:41:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 11:41:51,853 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:41:51,853 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:41:52,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:41:52,060 INFO L427 AbstractCegarLoop]: === Iteration 10 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:41:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:41:52,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2088272730, now seen corresponding path program 10 times [2020-04-18 11:41:52,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:41:52,060 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [719401830] [2020-04-18 11:41:52,061 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:41:52,063 INFO L259 McrAutomatonBuilder]: Finished intersection with 191 states and 350 transitions. [2020-04-18 11:41:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-04-18 11:41:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 11:41:52,065 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:41:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:41:52,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2088272730, now seen corresponding path program 11 times [2020-04-18 11:41:52,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:41:52,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902942655] [2020-04-18 11:41:52,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:41:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:41:52,726 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2020-04-18 11:41:53,011 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2020-04-18 11:41:53,404 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-04-18 11:41:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:41:54,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902942655] [2020-04-18 11:41:54,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361223090] [2020-04-18 11:41:54,056 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:41:54,140 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:41:54,140 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:41:54,143 WARN L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 108 conjunts are in the unsatisfiable core [2020-04-18 11:41:54,146 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:41:54,158 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 11:41:54,159 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:54,180 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 11:41:54,187 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:54,188 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 11:41:54,188 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:54,199 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:54,200 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:54,200 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 11:41:54,696 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:54,698 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:54,698 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:41:54,725 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:54,726 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 11:41:54,727 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:54,789 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-18 11:41:54,790 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:54,790 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-18 11:41:54,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:54,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:54,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:54,978 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:54,980 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:54,996 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:54,999 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-18 11:41:55,000 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:55,010 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,011 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,029 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,031 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 11:41:55,032 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:55,038 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,040 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,041 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,045 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 11:41:55,046 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:55,068 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:55,069 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:55,069 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-18 11:41:55,526 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,529 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,530 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,530 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:41:55,572 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:55,572 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 120 [2020-04-18 11:41:55,574 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:55,648 INFO L619 ElimStorePlain]: treesize reduction 72, result has 47.1 percent of original size [2020-04-18 11:41:55,648 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:55,649 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:55 [2020-04-18 11:41:55,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:55,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:55,754 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,774 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 11:41:55,775 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:55,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,782 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,783 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,827 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,829 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-18 11:41:55,830 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:55,833 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,834 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,835 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:41:55,837 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 11:41:55,838 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:55,876 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:55,877 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:55,877 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-18 11:41:56,160 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:56,161 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-18 11:41:56,162 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:56,221 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-18 11:41:56,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:41:56,223 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:41:56,223 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-18 11:41:56,359 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:56,359 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-18 11:41:56,360 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:41:56,365 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:41:56,365 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:41:56,365 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-18 11:41:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:41:56,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:41:56,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 44 [2020-04-18 11:41:56,460 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:41:56,465 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:41:56,483 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 110 transitions. [2020-04-18 11:41:56,483 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:42:01,962 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 60 times. [2020-04-18 11:42:01,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-04-18 11:42:01,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=5517, Unknown=0, NotChecked=0, Total=5852 [2020-04-18 11:42:01,964 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 77 states. [2020-04-18 11:42:02,893 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-04-18 11:42:03,493 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2020-04-18 11:42:04,344 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-04-18 11:42:06,159 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2020-04-18 11:42:07,406 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 59 [2020-04-18 11:42:08,734 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2020-04-18 11:42:12,026 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2020-04-18 11:42:13,368 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2020-04-18 11:42:13,735 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2020-04-18 11:42:15,158 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2020-04-18 11:42:15,863 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 63 [2020-04-18 11:42:17,863 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2020-04-18 11:42:21,278 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-04-18 11:42:24,529 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-04-18 11:42:27,607 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-04-18 11:42:27,869 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-04-18 11:42:29,628 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-04-18 11:42:31,362 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-04-18 11:42:32,982 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-04-18 11:42:34,155 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-04-18 11:42:34,736 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-04-18 11:42:35,518 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-04-18 11:42:36,583 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-04-18 11:42:38,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:42:38,396 INFO L93 Difference]: Finished difference Result 251 states and 451 transitions. [2020-04-18 11:42:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 451 transitions. [2020-04-18 11:42:38,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 11:42:38,397 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:42:38,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:42:38,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1593102136, now seen corresponding path program 12 times [2020-04-18 11:42:38,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:42:38,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216105477] [2020-04-18 11:42:38,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:42:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:42:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-04-18 11:42:38,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216105477] [2020-04-18 11:42:38,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:42:38,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 11:42:38,585 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:42:38,591 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:42:38,620 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 94 transitions. [2020-04-18 11:42:38,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:42:41,718 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 11:42:41,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:42:41,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1780, Invalid=19976, Unknown=0, NotChecked=0, Total=21756 [2020-04-18 11:42:41,720 INFO L87 Difference]: Start difference. First operand 251 states and 451 transitions. Second operand 19 states. [2020-04-18 11:42:43,074 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2020-04-18 11:42:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:42:43,980 INFO L93 Difference]: Finished difference Result 326 states and 581 transitions. [2020-04-18 11:42:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 581 transitions. [2020-04-18 11:42:43,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:42:43,982 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [719401830] [2020-04-18 11:42:43,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:42:43,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 11:42:43,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [719401830] [2020-04-18 11:42:43,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-04-18 11:42:43,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:42:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-04-18 11:42:43,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1992, Invalid=23130, Unknown=0, NotChecked=0, Total=25122 [2020-04-18 11:42:43,984 INFO L87 Difference]: Start difference. First operand 357 states and 778 transitions. Second operand 93 states. [2020-04-18 11:42:44,918 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 48 [2020-04-18 11:42:45,486 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 56 [2020-04-18 11:42:46,028 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 61 [2020-04-18 11:42:46,923 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 63 [2020-04-18 11:42:47,518 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 68 [2020-04-18 11:42:48,190 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 70 [2020-04-18 11:42:52,846 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-04-18 11:42:53,514 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 61 [2020-04-18 11:42:54,309 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2020-04-18 11:42:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:42:56,822 INFO L93 Difference]: Finished difference Result 428 states and 898 transitions. [2020-04-18 11:42:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-04-18 11:42:56,823 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 30 [2020-04-18 11:42:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:42:56,827 INFO L225 Difference]: With dead ends: 428 [2020-04-18 11:42:56,828 INFO L226 Difference]: Without dead ends: 419 [2020-04-18 11:42:56,829 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10678 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=2560, Invalid=28946, Unknown=0, NotChecked=0, Total=31506 [2020-04-18 11:42:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-04-18 11:42:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 373. [2020-04-18 11:42:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-04-18 11:42:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 809 transitions. [2020-04-18 11:42:56,840 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 809 transitions. Word has length 30 [2020-04-18 11:42:56,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:42:56,841 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 809 transitions. [2020-04-18 11:42:56,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-04-18 11:42:56,841 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 809 transitions. [2020-04-18 11:42:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 11:42:56,842 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:42:56,842 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:42:57,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:42:57,046 INFO L427 AbstractCegarLoop]: === Iteration 11 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 11:42:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:42:57,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1686493757, now seen corresponding path program 3 times [2020-04-18 11:42:57,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:42:57,047 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [328348007] [2020-04-18 11:42:57,048 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:42:57,050 INFO L259 McrAutomatonBuilder]: Finished intersection with 226 states and 420 transitions. [2020-04-18 11:42:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 11:42:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 11:42:57,052 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:42:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:42:57,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1686493757, now seen corresponding path program 4 times [2020-04-18 11:42:57,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:42:57,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937507252] [2020-04-18 11:42:57,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:42:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:42:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:42:58,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937507252] [2020-04-18 11:42:58,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525825304] [2020-04-18 11:42:58,298 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:42:58,368 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 11:42:58,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:42:58,371 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 130 conjunts are in the unsatisfiable core [2020-04-18 11:42:58,375 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:42:58,386 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2020-04-18 11:42:58,387 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:58,409 INFO L619 ElimStorePlain]: treesize reduction 12, result has 78.9 percent of original size [2020-04-18 11:42:58,417 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:58,418 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 11:42:58,419 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:58,427 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:42:58,428 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:42:58,428 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 11:42:58,796 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:58,797 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:58,797 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:42:58,825 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:42:58,826 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 11:42:58,827 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:58,899 INFO L619 ElimStorePlain]: treesize reduction 46, result has 57.8 percent of original size [2020-04-18 11:42:58,899 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:42:58,900 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:76, output treesize:60 [2020-04-18 11:42:59,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:42:59,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:42:59,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,056 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,076 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,078 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-18 11:42:59,079 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,103 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,109 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,111 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,125 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,129 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 11:42:59,130 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,134 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,134 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,138 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 11:42:59,139 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,166 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:42:59,166 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:42:59,167 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:278, output treesize:52 [2020-04-18 11:42:59,406 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:42:59,407 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 103 [2020-04-18 11:42:59,408 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,426 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:42:59,426 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:42:59,427 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:46 [2020-04-18 11:42:59,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:42:59,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:42:59,692 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:42:59,696 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,703 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2020-04-18 11:42:59,704 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,727 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:42:59,731 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:42:59,738 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2020-04-18 11:42:59,739 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,742 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2020-04-18 11:42:59,743 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,759 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:42:59,760 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:42:59,760 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:240, output treesize:46 [2020-04-18 11:42:59,907 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:42:59,907 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 58 [2020-04-18 11:42:59,908 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,913 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:42:59,913 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:42:59,914 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-04-18 11:42:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:42:59,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:42:59,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 40 [2020-04-18 11:42:59,998 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:43:00,004 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:43:00,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 82 transitions. [2020-04-18 11:43:00,018 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:43:03,246 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 36 times. [2020-04-18 11:43:03,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-04-18 11:43:03,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=3264, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 11:43:03,248 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 60 states. [2020-04-18 11:43:05,128 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2020-04-18 11:43:05,334 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2020-04-18 11:43:06,025 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2020-04-18 11:43:07,009 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2020-04-18 11:43:07,351 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-04-18 11:43:07,633 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2020-04-18 11:43:08,341 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-04-18 11:43:08,692 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-18 11:43:09,237 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2020-04-18 11:43:09,654 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-18 11:43:10,202 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-04-18 11:43:10,598 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2020-04-18 11:43:11,425 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-04-18 11:43:11,824 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2020-04-18 11:43:13,077 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2020-04-18 11:43:13,823 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2020-04-18 11:43:14,778 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2020-04-18 11:43:15,202 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-04-18 11:43:15,448 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-04-18 11:43:16,401 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 56 [2020-04-18 11:43:16,811 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2020-04-18 11:43:17,089 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-04-18 11:43:17,413 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-04-18 11:43:17,797 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2020-04-18 11:43:18,262 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2020-04-18 11:43:18,669 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 57 [2020-04-18 11:43:19,396 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2020-04-18 11:43:20,283 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2020-04-18 11:43:20,706 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-04-18 11:43:21,307 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2020-04-18 11:43:21,628 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 64 [2020-04-18 11:43:22,704 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2020-04-18 11:43:23,400 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 65 [2020-04-18 11:43:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:43:25,609 INFO L93 Difference]: Finished difference Result 283 states and 516 transitions. [2020-04-18 11:43:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 516 transitions. [2020-04-18 11:43:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 11:43:25,611 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:43:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:43:25,611 INFO L82 PathProgramCache]: Analyzing trace with hash 6218509, now seen corresponding path program 5 times [2020-04-18 11:43:25,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:43:25,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233973768] [2020-04-18 11:43:25,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:43:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:43:26,131 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2020-04-18 11:43:26,871 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 29 [2020-04-18 11:43:27,025 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2020-04-18 11:43:27,247 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 39 [2020-04-18 11:43:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:43:27,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233973768] [2020-04-18 11:43:27,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863566771] [2020-04-18 11:43:27,457 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:43:27,547 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 11:43:27,548 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 11:43:27,550 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 134 conjunts are in the unsatisfiable core [2020-04-18 11:43:27,554 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 11:43:27,582 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 11:43:27,583 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:27,602 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 11:43:27,607 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:27,608 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 11:43:27,608 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:27,619 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:43:27,619 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:43:27,620 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 11:43:28,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,015 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:43:28,044 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:43:28,045 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 92 [2020-04-18 11:43:28,046 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:28,113 INFO L619 ElimStorePlain]: treesize reduction 50, result has 54.5 percent of original size [2020-04-18 11:43:28,114 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:43:28,115 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:60 [2020-04-18 11:43:28,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:43:28,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:43:28,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,317 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,322 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 59 [2020-04-18 11:43:28,323 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:28,328 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,329 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,330 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,348 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,349 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 67 [2020-04-18 11:43:28,350 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:28,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,355 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,357 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:28,358 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 58 [2020-04-18 11:43:28,358 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:28,381 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:43:28,382 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:43:28,382 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:296, output treesize:58 [2020-04-18 11:43:29,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:43:29,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:43:29,088 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,090 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,091 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,101 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:43:29,106 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,113 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 72 [2020-04-18 11:43:29,114 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:29,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,134 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,143 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 11:43:29,155 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,161 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 11:43:29,162 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:29,167 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,168 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,169 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 11:43:29,171 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 63 [2020-04-18 11:43:29,172 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:29,198 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:43:29,199 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:43:29,199 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:309, output treesize:57 [2020-04-18 11:43:29,305 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2020-04-18 11:43:29,306 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:29,323 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:43:29,324 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 11:43:29,324 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:46 [2020-04-18 11:43:29,477 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:43:29,478 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 58 [2020-04-18 11:43:29,479 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 11:43:29,484 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 11:43:29,484 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 11:43:29,484 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-04-18 11:43:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:43:29,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 11:43:29,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 42 [2020-04-18 11:43:29,572 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:43:29,577 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:43:29,597 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 120 transitions. [2020-04-18 11:43:29,597 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:43:48,418 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 70 times. [2020-04-18 11:43:48,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-04-18 11:43:48,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3037, Invalid=37163, Unknown=0, NotChecked=0, Total=40200 [2020-04-18 11:43:48,420 INFO L87 Difference]: Start difference. First operand 283 states and 516 transitions. Second operand 96 states. [2020-04-18 11:43:51,472 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-04-18 11:43:52,781 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 56 [2020-04-18 11:43:54,454 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 62 [2020-04-18 11:43:55,092 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 49 [2020-04-18 11:43:55,586 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2020-04-18 11:43:56,896 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 53 [2020-04-18 11:43:57,478 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-18 11:43:58,464 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 59 [2020-04-18 11:43:59,216 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-18 11:44:00,273 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 64 [2020-04-18 11:44:01,014 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 54 [2020-04-18 11:44:02,589 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 65 [2020-04-18 11:44:03,316 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 58 [2020-04-18 11:44:04,896 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2020-04-18 11:44:05,675 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 58 Received shutdown request... [2020-04-18 11:44:06,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 11:44:06,259 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyModuleMcr.getOrConstruct(StrategyModuleMcr.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyModuleMcr.isCorrect(StrategyModuleMcr.java:64) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1067) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.Mcr.exploreInterleavings(Mcr.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.Mcr.(Mcr.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyModuleMcr.getOrConstruct(StrategyModuleMcr.java:126) ... 23 more [2020-04-18 11:44:06,262 INFO L168 Benchmark]: Toolchain (without parser) took 258565.98 ms. Allocated memory was 146.3 MB in the beginning and 460.3 MB in the end (delta: 314.0 MB). Free memory was 102.2 MB in the beginning and 61.7 MB in the end (delta: 40.5 MB). Peak memory consumption was 354.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:44:06,263 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:44:06,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.09 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.4 MB in the beginning and 148.9 MB in the end (delta: -48.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:44:06,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.90 ms. Allocated memory is still 203.4 MB. Free memory was 148.9 MB in the beginning and 146.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:44:06,264 INFO L168 Benchmark]: Boogie Preprocessor took 80.19 ms. Allocated memory is still 203.4 MB. Free memory was 146.0 MB in the beginning and 145.1 MB in the end (delta: 958.5 kB). Peak memory consumption was 958.5 kB. Max. memory is 7.1 GB. [2020-04-18 11:44:06,265 INFO L168 Benchmark]: RCFGBuilder took 650.87 ms. Allocated memory is still 203.4 MB. Free memory was 144.1 MB in the beginning and 115.0 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:44:06,265 INFO L168 Benchmark]: TraceAbstraction took 256965.78 ms. Allocated memory was 203.4 MB in the beginning and 460.3 MB in the end (delta: 256.9 MB). Free memory was 114.0 MB in the beginning and 61.7 MB in the end (delta: 52.3 MB). Peak memory consumption was 309.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:44:06,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.09 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.4 MB in the beginning and 148.9 MB in the end (delta: -48.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 84.90 ms. Allocated memory is still 203.4 MB. Free memory was 148.9 MB in the beginning and 146.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.19 ms. Allocated memory is still 203.4 MB. Free memory was 146.0 MB in the beginning and 145.1 MB in the end (delta: 958.5 kB). Peak memory consumption was 958.5 kB. Max. memory is 7.1 GB. * RCFGBuilder took 650.87 ms. Allocated memory is still 203.4 MB. Free memory was 144.1 MB in the beginning and 115.0 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256965.78 ms. Allocated memory was 203.4 MB in the beginning and 460.3 MB in the end (delta: 256.9 MB). Free memory was 114.0 MB in the beginning and 61.7 MB in the end (delta: 52.3 MB). Peak memory consumption was 309.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.4s, 122 ProgramPointsBefore, 31 ProgramPointsAfterwards, 128 TransitionsBefore, 34 TransitionsAfterwards, 4968 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 2682 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 23 SemBasedMoverChecksPositive, 68 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 5902 CheckedPairsTotal, 114 TotalNumberOfCompositions - ExceptionOrErrorResult: RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user.: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyModuleMcr.getOrConstruct(StrategyModuleMcr.java:128) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown