/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.epf -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:49:22,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:49:22,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:49:22,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:49:22,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:49:22,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:49:22,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:49:22,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:49:22,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:49:22,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:49:22,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:49:22,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:49:22,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:49:22,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:49:22,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:49:22,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:49:22,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:49:22,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:49:22,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:49:22,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:49:22,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:49:22,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:49:22,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:49:22,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:49:22,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:49:22,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:49:22,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:49:22,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:49:22,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:49:22,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:49:22,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:49:22,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:49:22,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:49:22,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:49:22,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:49:22,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:49:22,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:49:22,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:49:22,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:49:22,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:49:22,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:49:22,567 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.epf [2020-04-17 22:49:22,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:49:22,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:49:22,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:49:22,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:49:22,583 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:49:22,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:49:22,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:49:22,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:49:22,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:49:22,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:49:22,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:49:22,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:49:22,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:49:22,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:49:22,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:49:22,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:49:22,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:49:22,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:49:22,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:49:22,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:49:22,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:49:22,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:49:22,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:49:22,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:49:22,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:49:22,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:49:22,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:49:22,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:49:22,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:49:22,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:49:22,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:49:22,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:49:22,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:49:22,897 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:49:22,898 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2020-04-17 22:49:22,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc109fa7/ff48e4771748474cbebe3b5b701e71a2/FLAG8d42d1444 [2020-04-17 22:49:23,466 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:49:23,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2020-04-17 22:49:23,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc109fa7/ff48e4771748474cbebe3b5b701e71a2/FLAG8d42d1444 [2020-04-17 22:49:23,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc109fa7/ff48e4771748474cbebe3b5b701e71a2 [2020-04-17 22:49:23,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:49:23,800 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:49:23,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:49:23,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:49:23,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:49:23,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:49:23" (1/1) ... [2020-04-17 22:49:23,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de67c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:23, skipping insertion in model container [2020-04-17 22:49:23,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:49:23" (1/1) ... [2020-04-17 22:49:23,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:49:23,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:49:24,122 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-04-17 22:49:24,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:49:24,525 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:49:24,546 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-04-17 22:49:24,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:49:24,726 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:49:24,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24 WrapperNode [2020-04-17 22:49:24,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:49:24,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:49:24,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:49:24,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:49:24,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:49:24,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:49:24,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:49:24,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:49:24,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (1/1) ... [2020-04-17 22:49:24,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:49:24,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:49:24,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:49:24,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:49:24,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (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 [2020-04-17 22:49:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2020-04-17 22:49:24,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2020-04-17 22:49:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:49:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:49:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 22:49:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:49:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:49:24,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:49:24,941 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:49:25,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:49:25,444 INFO L295 CfgBuilder]: Removed 19 assume(true) statements. [2020-04-17 22:49:25,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:49:25 BoogieIcfgContainer [2020-04-17 22:49:25,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:49:25,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:49:25,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:49:25,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:49:25,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:49:23" (1/3) ... [2020-04-17 22:49:25,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286cc6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:49:25, skipping insertion in model container [2020-04-17 22:49:25,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:49:24" (2/3) ... [2020-04-17 22:49:25,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286cc6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:49:25, skipping insertion in model container [2020-04-17 22:49:25,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:49:25" (3/3) ... [2020-04-17 22:49:25,457 INFO L109 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2020-04-17 22:49:25,469 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:49:25,469 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:49:25,478 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-04-17 22:49:25,479 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:49:25,512 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,513 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,513 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,514 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,514 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,514 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,515 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,515 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,515 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,515 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,516 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,516 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,516 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,517 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,517 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,517 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,518 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,518 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,518 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,519 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,519 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,519 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,519 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,520 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,520 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,520 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,521 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,521 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,521 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,521 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,522 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,522 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,522 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,522 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,523 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,523 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,523 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,523 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,524 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,524 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,524 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,524 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,525 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,525 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,525 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,525 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,526 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,526 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,526 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,527 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,527 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,527 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,527 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,528 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,528 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,528 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,528 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,529 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,529 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,529 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,530 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,530 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,530 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,530 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,530 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,531 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,531 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,531 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,531 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,532 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,532 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,532 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,533 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,533 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,533 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,533 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,534 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,534 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,534 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,534 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,535 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,535 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,535 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,535 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,536 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,536 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,536 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,536 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,537 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,537 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,537 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,537 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,538 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,538 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,538 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,538 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,538 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,539 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,539 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,539 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,539 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,540 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,540 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,540 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,540 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,541 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,541 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,541 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,541 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,542 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,542 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,542 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,542 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,543 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,543 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,543 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,543 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,544 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,544 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,544 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,544 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,545 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,545 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,545 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,546 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,547 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,547 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,547 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,551 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,551 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,552 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,552 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,552 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,552 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,553 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,553 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,553 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,553 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,553 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,554 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,554 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,554 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,554 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,555 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,555 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,555 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,555 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,556 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,556 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,556 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,556 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,557 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,557 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,557 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,557 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,558 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,558 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:49:25,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-17 22:49:25,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:49:25,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:49:25,605 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:49:25,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:49:25,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:49:25,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:49:25,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:49:25,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:49:25,625 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 128 transitions, 264 flow [2020-04-17 22:49:25,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 264 flow [2020-04-17 22:49:25,708 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2020-04-17 22:49:25,708 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-04-17 22:49:25,715 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. [2020-04-17 22:49:25,721 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 264 flow [2020-04-17 22:49:25,753 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2020-04-17 22:49:25,753 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-04-17 22:49:25,757 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. [2020-04-17 22:49:25,764 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4968 [2020-04-17 22:49:25,765 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:49:26,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:49:26,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:49:26,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:49:26,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:49:28,286 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-04-17 22:49:29,059 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5902 [2020-04-17 22:49:29,060 INFO L214 etLargeBlockEncoding]: Total number of compositions: 114 [2020-04-17 22:49:29,064 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 34 transitions, 76 flow [2020-04-17 22:49:29,080 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 139 states. [2020-04-17 22:49:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-04-17 22:49:29,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 22:49:29,089 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:29,090 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 22:49:29,090 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]=== [2020-04-17 22:49:29,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:29,097 INFO L82 PathProgramCache]: Analyzing trace with hash 486263513, now seen corresponding path program 1 times [2020-04-17 22:49:29,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:29,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618444191] [2020-04-17 22:49:29,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:29,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618444191] [2020-04-17 22:49:29,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:29,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:49:29,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700311306] [2020-04-17 22:49:29,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:49:29,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:29,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:49:29,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:49:29,312 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 2 states. [2020-04-17 22:49:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:29,337 INFO L93 Difference]: Finished difference Result 139 states and 298 transitions. [2020-04-17 22:49:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:49:29,339 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-04-17 22:49:29,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:29,353 INFO L225 Difference]: With dead ends: 139 [2020-04-17 22:49:29,353 INFO L226 Difference]: Without dead ends: 128 [2020-04-17 22:49:29,354 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:49:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-17 22:49:29,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-17 22:49:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-17 22:49:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 277 transitions. [2020-04-17 22:49:29,409 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 277 transitions. Word has length 5 [2020-04-17 22:49:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:29,410 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 277 transitions. [2020-04-17 22:49:29,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:49:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 277 transitions. [2020-04-17 22:49:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 22:49:29,411 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:29,411 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 22:49:29,411 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]=== [2020-04-17 22:49:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:29,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2105704442, now seen corresponding path program 1 times [2020-04-17 22:49:29,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:29,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132789624] [2020-04-17 22:49:29,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:29,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132789624] [2020-04-17 22:49:29,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:29,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:49:29,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493761518] [2020-04-17 22:49:29,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:49:29,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:29,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:49:29,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:49:29,513 INFO L87 Difference]: Start difference. First operand 128 states and 277 transitions. Second operand 3 states. [2020-04-17 22:49:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:29,548 INFO L93 Difference]: Finished difference Result 200 states and 438 transitions. [2020-04-17 22:49:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:49:29,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 22:49:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:29,558 INFO L225 Difference]: With dead ends: 200 [2020-04-17 22:49:29,558 INFO L226 Difference]: Without dead ends: 200 [2020-04-17 22:49:29,559 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:49:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-04-17 22:49:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 155. [2020-04-17 22:49:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-04-17 22:49:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 343 transitions. [2020-04-17 22:49:29,594 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 343 transitions. Word has length 6 [2020-04-17 22:49:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:29,594 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 343 transitions. [2020-04-17 22:49:29,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:49:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 343 transitions. [2020-04-17 22:49:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:49:29,599 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:29,599 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:29,599 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]=== [2020-04-17 22:49:29,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:29,600 INFO L82 PathProgramCache]: Analyzing trace with hash 282683680, now seen corresponding path program 1 times [2020-04-17 22:49:29,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:29,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199690997] [2020-04-17 22:49:29,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:29,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199690997] [2020-04-17 22:49:29,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:29,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 22:49:29,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762643932] [2020-04-17 22:49:29,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 22:49:29,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:29,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 22:49:29,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:49:29,823 INFO L87 Difference]: Start difference. First operand 155 states and 343 transitions. Second operand 7 states. [2020-04-17 22:49:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:30,201 INFO L93 Difference]: Finished difference Result 181 states and 391 transitions. [2020-04-17 22:49:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:49:30,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-17 22:49:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:30,204 INFO L225 Difference]: With dead ends: 181 [2020-04-17 22:49:30,204 INFO L226 Difference]: Without dead ends: 162 [2020-04-17 22:49:30,204 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-04-17 22:49:30,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-04-17 22:49:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-04-17 22:49:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-17 22:49:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 359 transitions. [2020-04-17 22:49:30,224 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 359 transitions. Word has length 10 [2020-04-17 22:49:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:30,225 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 359 transitions. [2020-04-17 22:49:30,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 22:49:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 359 transitions. [2020-04-17 22:49:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:49:30,228 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:30,228 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:30,229 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]=== [2020-04-17 22:49:30,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:30,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1366120806, now seen corresponding path program 1 times [2020-04-17 22:49:30,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:30,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210475377] [2020-04-17 22:49:30,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:30,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210475377] [2020-04-17 22:49:30,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:30,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-04-17 22:49:30,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587949999] [2020-04-17 22:49:30,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-17 22:49:30,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:30,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-17 22:49:30,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-04-17 22:49:30,801 INFO L87 Difference]: Start difference. First operand 162 states and 359 transitions. Second operand 12 states. [2020-04-17 22:49:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:32,522 INFO L93 Difference]: Finished difference Result 205 states and 441 transitions. [2020-04-17 22:49:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-17 22:49:32,523 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-04-17 22:49:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:32,524 INFO L225 Difference]: With dead ends: 205 [2020-04-17 22:49:32,525 INFO L226 Difference]: Without dead ends: 195 [2020-04-17 22:49:32,525 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-04-17 22:49:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-04-17 22:49:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 183. [2020-04-17 22:49:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-04-17 22:49:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 401 transitions. [2020-04-17 22:49:32,537 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 401 transitions. Word has length 16 [2020-04-17 22:49:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:32,537 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 401 transitions. [2020-04-17 22:49:32,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-17 22:49:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 401 transitions. [2020-04-17 22:49:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:49:32,539 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:32,539 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:32,539 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]=== [2020-04-17 22:49:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1230311642, now seen corresponding path program 2 times [2020-04-17 22:49:32,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:32,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376890073] [2020-04-17 22:49:32,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:33,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376890073] [2020-04-17 22:49:33,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:33,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-17 22:49:33,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819854082] [2020-04-17 22:49:33,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-17 22:49:33,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:33,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-17 22:49:33,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-04-17 22:49:33,077 INFO L87 Difference]: Start difference. First operand 183 states and 401 transitions. Second operand 13 states. [2020-04-17 22:49:34,542 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-04-17 22:49:34,717 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2020-04-17 22:49:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:35,394 INFO L93 Difference]: Finished difference Result 208 states and 440 transitions. [2020-04-17 22:49:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 22:49:35,398 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-04-17 22:49:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:35,399 INFO L225 Difference]: With dead ends: 208 [2020-04-17 22:49:35,399 INFO L226 Difference]: Without dead ends: 197 [2020-04-17 22:49:35,400 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2020-04-17 22:49:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-04-17 22:49:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 170. [2020-04-17 22:49:35,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 22:49:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 371 transitions. [2020-04-17 22:49:35,421 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 371 transitions. Word has length 16 [2020-04-17 22:49:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:35,421 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 371 transitions. [2020-04-17 22:49:35,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-17 22:49:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 371 transitions. [2020-04-17 22:49:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:49:35,425 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:35,425 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:35,425 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]=== [2020-04-17 22:49:35,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:35,425 INFO L82 PathProgramCache]: Analyzing trace with hash 145495381, now seen corresponding path program 1 times [2020-04-17 22:49:35,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:35,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629638045] [2020-04-17 22:49:35,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:36,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629638045] [2020-04-17 22:49:36,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:36,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 22:49:36,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621507073] [2020-04-17 22:49:36,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 22:49:36,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:36,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 22:49:36,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-17 22:49:36,373 INFO L87 Difference]: Start difference. First operand 170 states and 371 transitions. Second operand 16 states. [2020-04-17 22:49:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:38,095 INFO L93 Difference]: Finished difference Result 261 states and 568 transitions. [2020-04-17 22:49:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-17 22:49:38,096 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 22:49:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:38,098 INFO L225 Difference]: With dead ends: 261 [2020-04-17 22:49:38,098 INFO L226 Difference]: Without dead ends: 261 [2020-04-17 22:49:38,099 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-04-17 22:49:38,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-04-17 22:49:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 237. [2020-04-17 22:49:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-04-17 22:49:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 518 transitions. [2020-04-17 22:49:38,110 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 518 transitions. Word has length 18 [2020-04-17 22:49:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:38,111 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 518 transitions. [2020-04-17 22:49:38,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 22:49:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 518 transitions. [2020-04-17 22:49:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:49:38,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:38,114 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:38,114 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]=== [2020-04-17 22:49:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:38,114 INFO L82 PathProgramCache]: Analyzing trace with hash 349911829, now seen corresponding path program 2 times [2020-04-17 22:49:38,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:38,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333386696] [2020-04-17 22:49:38,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:38,633 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-04-17 22:49:38,760 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-04-17 22:49:39,027 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2020-04-17 22:49:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:39,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333386696] [2020-04-17 22:49:39,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:39,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 22:49:39,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417332723] [2020-04-17 22:49:39,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 22:49:39,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:39,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 22:49:39,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-17 22:49:39,192 INFO L87 Difference]: Start difference. First operand 237 states and 518 transitions. Second operand 16 states. [2020-04-17 22:49:40,029 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-04-17 22:49:40,223 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-04-17 22:49:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:40,983 INFO L93 Difference]: Finished difference Result 307 states and 673 transitions. [2020-04-17 22:49:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-17 22:49:40,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 22:49:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:40,988 INFO L225 Difference]: With dead ends: 307 [2020-04-17 22:49:40,988 INFO L226 Difference]: Without dead ends: 307 [2020-04-17 22:49:40,989 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2020-04-17 22:49:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-04-17 22:49:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 237. [2020-04-17 22:49:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-04-17 22:49:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 518 transitions. [2020-04-17 22:49:40,999 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 518 transitions. Word has length 18 [2020-04-17 22:49:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:40,999 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 518 transitions. [2020-04-17 22:49:40,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 22:49:40,999 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 518 transitions. [2020-04-17 22:49:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:49:41,001 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:41,002 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:41,002 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]=== [2020-04-17 22:49:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:41,002 INFO L82 PathProgramCache]: Analyzing trace with hash 599415313, now seen corresponding path program 3 times [2020-04-17 22:49:41,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:41,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046521310] [2020-04-17 22:49:41,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:41,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046521310] [2020-04-17 22:49:41,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:41,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 22:49:41,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078201637] [2020-04-17 22:49:41,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 22:49:41,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 22:49:41,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-17 22:49:41,827 INFO L87 Difference]: Start difference. First operand 237 states and 518 transitions. Second operand 16 states. [2020-04-17 22:49:42,590 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-04-17 22:49:42,833 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-04-17 22:49:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:43,813 INFO L93 Difference]: Finished difference Result 304 states and 667 transitions. [2020-04-17 22:49:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-17 22:49:43,813 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 22:49:43,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:43,817 INFO L225 Difference]: With dead ends: 304 [2020-04-17 22:49:43,817 INFO L226 Difference]: Without dead ends: 304 [2020-04-17 22:49:43,818 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-04-17 22:49:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-17 22:49:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 237. [2020-04-17 22:49:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-04-17 22:49:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 518 transitions. [2020-04-17 22:49:43,826 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 518 transitions. Word has length 18 [2020-04-17 22:49:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:43,827 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 518 transitions. [2020-04-17 22:49:43,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 22:49:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 518 transitions. [2020-04-17 22:49:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:49:43,828 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:43,829 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:43,829 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]=== [2020-04-17 22:49:43,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:43,829 INFO L82 PathProgramCache]: Analyzing trace with hash -898885167, now seen corresponding path program 4 times [2020-04-17 22:49:43,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:43,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11220285] [2020-04-17 22:49:43,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:44,270 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2020-04-17 22:49:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:44,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11220285] [2020-04-17 22:49:44,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:44,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 22:49:44,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421247403] [2020-04-17 22:49:44,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 22:49:44,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:44,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 22:49:44,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-04-17 22:49:44,676 INFO L87 Difference]: Start difference. First operand 237 states and 518 transitions. Second operand 16 states. [2020-04-17 22:49:45,445 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-04-17 22:49:45,697 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-04-17 22:49:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:46,651 INFO L93 Difference]: Finished difference Result 419 states and 934 transitions. [2020-04-17 22:49:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-17 22:49:46,653 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 22:49:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:46,657 INFO L225 Difference]: With dead ends: 419 [2020-04-17 22:49:46,657 INFO L226 Difference]: Without dead ends: 419 [2020-04-17 22:49:46,658 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-04-17 22:49:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-04-17 22:49:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 243. [2020-04-17 22:49:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-04-17 22:49:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 531 transitions. [2020-04-17 22:49:46,667 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 531 transitions. Word has length 18 [2020-04-17 22:49:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:46,667 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 531 transitions. [2020-04-17 22:49:46,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 22:49:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 531 transitions. [2020-04-17 22:49:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:49:46,668 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:46,669 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:46,669 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]=== [2020-04-17 22:49:46,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:46,669 INFO L82 PathProgramCache]: Analyzing trace with hash 976531695, now seen corresponding path program 5 times [2020-04-17 22:49:46,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:46,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177073787] [2020-04-17 22:49:46,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:47,362 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2020-04-17 22:49:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:47,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177073787] [2020-04-17 22:49:47,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:47,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 22:49:47,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608218905] [2020-04-17 22:49:47,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 22:49:47,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:47,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 22:49:47,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-17 22:49:47,535 INFO L87 Difference]: Start difference. First operand 243 states and 531 transitions. Second operand 16 states. [2020-04-17 22:49:48,536 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-04-17 22:49:48,706 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-04-17 22:49:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:49,448 INFO L93 Difference]: Finished difference Result 322 states and 704 transitions. [2020-04-17 22:49:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-17 22:49:49,449 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 22:49:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:49,454 INFO L225 Difference]: With dead ends: 322 [2020-04-17 22:49:49,455 INFO L226 Difference]: Without dead ends: 322 [2020-04-17 22:49:49,455 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-04-17 22:49:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-04-17 22:49:49,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 243. [2020-04-17 22:49:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-04-17 22:49:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 531 transitions. [2020-04-17 22:49:49,470 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 531 transitions. Word has length 18 [2020-04-17 22:49:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:49,470 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 531 transitions. [2020-04-17 22:49:49,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 22:49:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 531 transitions. [2020-04-17 22:49:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:49:49,472 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:49,472 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:49,472 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]=== [2020-04-17 22:49:49,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:49,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1354999957, now seen corresponding path program 6 times [2020-04-17 22:49:49,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:49,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517131181] [2020-04-17 22:49:49,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:50,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517131181] [2020-04-17 22:49:50,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:49:50,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-17 22:49:50,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970362559] [2020-04-17 22:49:50,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-17 22:49:50,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:50,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-17 22:49:50,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-04-17 22:49:50,336 INFO L87 Difference]: Start difference. First operand 243 states and 531 transitions. Second operand 16 states. [2020-04-17 22:49:51,357 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-04-17 22:49:52,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:52,023 INFO L93 Difference]: Finished difference Result 301 states and 662 transitions. [2020-04-17 22:49:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-17 22:49:52,024 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-17 22:49:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:52,026 INFO L225 Difference]: With dead ends: 301 [2020-04-17 22:49:52,027 INFO L226 Difference]: Without dead ends: 301 [2020-04-17 22:49:52,027 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2020-04-17 22:49:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-04-17 22:49:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 222. [2020-04-17 22:49:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-04-17 22:49:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 489 transitions. [2020-04-17 22:49:52,034 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 489 transitions. Word has length 18 [2020-04-17 22:49:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:52,035 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 489 transitions. [2020-04-17 22:49:52,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-17 22:49:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 489 transitions. [2020-04-17 22:49:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 22:49:52,036 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:52,036 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] [2020-04-17 22:49:52,036 INFO L427 AbstractCegarLoop]: === Iteration 12 === [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]=== [2020-04-17 22:49:52,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:52,037 INFO L82 PathProgramCache]: Analyzing trace with hash 831318896, now seen corresponding path program 1 times [2020-04-17 22:49:52,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:52,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972689098] [2020-04-17 22:49:52,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:52,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972689098] [2020-04-17 22:49:52,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927888641] [2020-04-17 22:49:52,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-04-17 22:49:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:52,173 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2020-04-17 22:49:52,179 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:49:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:52,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:49:52,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-04-17 22:49:52,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021469015] [2020-04-17 22:49:52,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:49:52,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:52,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:49:52,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:49:52,207 INFO L87 Difference]: Start difference. First operand 222 states and 489 transitions. Second operand 5 states. [2020-04-17 22:49:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:52,232 INFO L93 Difference]: Finished difference Result 326 states and 718 transitions. [2020-04-17 22:49:52,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:49:52,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-17 22:49:52,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:52,236 INFO L225 Difference]: With dead ends: 326 [2020-04-17 22:49:52,237 INFO L226 Difference]: Without dead ends: 326 [2020-04-17 22:49:52,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:49:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-04-17 22:49:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278. [2020-04-17 22:49:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-04-17 22:49:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 624 transitions. [2020-04-17 22:49:52,247 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 624 transitions. Word has length 21 [2020-04-17 22:49:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:52,247 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 624 transitions. [2020-04-17 22:49:52,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:49:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 624 transitions. [2020-04-17 22:49:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 22:49:52,249 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:52,249 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:52,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:49:52,453 INFO L427 AbstractCegarLoop]: === Iteration 13 === [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]=== [2020-04-17 22:49:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:52,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1273193156, now seen corresponding path program 7 times [2020-04-17 22:49:52,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:52,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940504089] [2020-04-17 22:49:52,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:53,034 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-04-17 22:49:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:53,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940504089] [2020-04-17 22:49:53,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675158234] [2020-04-17 22:49:53,859 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-04-17 22:49:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:53,939 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-17 22:49:53,941 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:49:53,984 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:53,998 INFO L343 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-04-17 22:49:53,999 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 22:49:53,999 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,008 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:49:54,009 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:49:54,009 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:27 [2020-04-17 22:49:54,270 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,271 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:49:54,302 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:49:54,303 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 76 [2020-04-17 22:49:54,304 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,355 INFO L619 ElimStorePlain]: treesize reduction 46, result has 48.9 percent of original size [2020-04-17 22:49:54,355 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,356 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:44 [2020-04-17 22:49:54,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:49:54,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:49:54,491 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,492 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,493 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,506 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,508 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2020-04-17 22:49:54,509 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,517 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,518 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,519 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,529 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2020-04-17 22:49:54,530 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,537 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:49:54,542 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 54 [2020-04-17 22:49:54,543 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,561 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:49:54,561 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,561 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:236, output treesize:38 [2020-04-17 22:49:54,776 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:49:54,777 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 117 [2020-04-17 22:49:54,778 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,830 INFO L619 ElimStorePlain]: treesize reduction 64, result has 43.9 percent of original size [2020-04-17 22:49:54,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:49:54,832 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,833 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:21 [2020-04-17 22:49:54,918 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:49:54,919 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 35 [2020-04-17 22:49:54,919 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,924 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:49:54,925 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:49:54,925 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:9 [2020-04-17 22:49:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:49:54,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:49:54,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 27 [2020-04-17 22:49:54,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530723734] [2020-04-17 22:49:54,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-04-17 22:49:54,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:49:54,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-04-17 22:49:54,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2020-04-17 22:49:54,940 INFO L87 Difference]: Start difference. First operand 278 states and 624 transitions. Second operand 29 states. [2020-04-17 22:49:55,980 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-04-17 22:49:56,177 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-04-17 22:49:58,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:49:59,000 INFO L93 Difference]: Finished difference Result 403 states and 886 transitions. [2020-04-17 22:49:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 22:49:59,000 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 23 [2020-04-17 22:49:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:49:59,004 INFO L225 Difference]: With dead ends: 403 [2020-04-17 22:49:59,004 INFO L226 Difference]: Without dead ends: 403 [2020-04-17 22:49:59,005 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=415, Invalid=2555, Unknown=0, NotChecked=0, Total=2970 [2020-04-17 22:49:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-04-17 22:49:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 340. [2020-04-17 22:49:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-04-17 22:49:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 762 transitions. [2020-04-17 22:49:59,014 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 762 transitions. Word has length 23 [2020-04-17 22:49:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:49:59,015 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 762 transitions. [2020-04-17 22:49:59,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-04-17 22:49:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 762 transitions. [2020-04-17 22:49:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 22:49:59,016 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:49:59,016 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:49:59,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:49:59,225 INFO L427 AbstractCegarLoop]: === Iteration 14 === [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]=== [2020-04-17 22:49:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:49:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1480527740, now seen corresponding path program 8 times [2020-04-17 22:49:59,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:49:59,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897315335] [2020-04-17 22:49:59,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:49:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:49:59,807 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2020-04-17 22:50:00,032 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 45 [2020-04-17 22:50:00,162 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2020-04-17 22:50:00,375 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 39 [2020-04-17 22:50:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:00,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897315335] [2020-04-17 22:50:00,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820276399] [2020-04-17 22:50:00,827 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 [2020-04-17 22:50:00,908 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 22:50:00,908 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:50:00,910 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-17 22:50:00,913 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:50:00,934 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 [2020-04-17 22:50:00,935 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:00,955 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 22:50:00,963 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:00,965 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 [2020-04-17 22:50:00,965 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:00,984 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:00,985 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. [2020-04-17 22:50:00,985 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:50:01,622 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,623 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,624 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:01,655 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:01,655 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 [2020-04-17 22:50:01,656 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:01,724 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 22:50:01,724 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. [2020-04-17 22:50:01,725 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-17 22:50:01,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:01,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:01,896 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,898 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,900 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,923 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,927 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 [2020-04-17 22:50:01,929 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:01,948 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,950 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,951 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,966 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,968 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 [2020-04-17 22:50:01,969 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:01,975 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,976 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,983 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:01,984 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 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 [2020-04-17 22:50:01,985 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:02,006 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:02,007 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. [2020-04-17 22:50:02,007 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 22:50:02,312 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:02,313 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 [2020-04-17 22:50:02,314 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:02,389 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 22:50:02,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:02,391 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. [2020-04-17 22:50:02,391 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-17 22:50:02,549 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:02,549 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 [2020-04-17 22:50:02,550 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:02,556 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:02,556 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:50:02,557 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-17 22:50:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:02,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:50:02,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2020-04-17 22:50:02,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150292395] [2020-04-17 22:50:02,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-17 22:50:02,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:50:02,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-17 22:50:02,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2020-04-17 22:50:02,588 INFO L87 Difference]: Start difference. First operand 340 states and 762 transitions. Second operand 33 states. [2020-04-17 22:50:03,410 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-04-17 22:50:03,667 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-04-17 22:50:03,955 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2020-04-17 22:50:04,226 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2020-04-17 22:50:05,639 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-04-17 22:50:06,030 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-04-17 22:50:06,301 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-04-17 22:50:06,734 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-04-17 22:50:07,219 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-04-17 22:50:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:50:07,855 INFO L93 Difference]: Finished difference Result 444 states and 982 transitions. [2020-04-17 22:50:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 22:50:07,855 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 23 [2020-04-17 22:50:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:50:07,859 INFO L225 Difference]: With dead ends: 444 [2020-04-17 22:50:07,859 INFO L226 Difference]: Without dead ends: 444 [2020-04-17 22:50:07,861 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=437, Invalid=2985, Unknown=0, NotChecked=0, Total=3422 [2020-04-17 22:50:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-04-17 22:50:07,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 340. [2020-04-17 22:50:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-04-17 22:50:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 762 transitions. [2020-04-17 22:50:07,870 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 762 transitions. Word has length 23 [2020-04-17 22:50:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:50:07,870 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 762 transitions. [2020-04-17 22:50:07,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-17 22:50:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 762 transitions. [2020-04-17 22:50:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 22:50:07,872 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:50:07,872 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:50:08,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:50:08,076 INFO L427 AbstractCegarLoop]: === Iteration 15 === [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]=== [2020-04-17 22:50:08,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:50:08,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1675104768, now seen corresponding path program 9 times [2020-04-17 22:50:08,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:50:08,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677041521] [2020-04-17 22:50:08,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:50:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:50:08,682 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35 [2020-04-17 22:50:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:09,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677041521] [2020-04-17 22:50:09,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605408917] [2020-04-17 22:50:09,541 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-04-17 22:50:09,613 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-17 22:50:09,614 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:50:09,616 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-17 22:50:09,618 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:50:09,630 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 [2020-04-17 22:50:09,631 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:09,658 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 22:50:09,665 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:09,666 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 [2020-04-17 22:50:09,667 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:09,678 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:09,679 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. [2020-04-17 22:50:09,679 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:50:10,092 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,094 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:10,121 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:10,121 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 [2020-04-17 22:50:10,123 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:10,179 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 22:50:10,180 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. [2020-04-17 22:50:10,180 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-17 22:50:10,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:10,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:10,397 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,398 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,399 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,435 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:10,436 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,438 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 68 treesize of output 55 [2020-04-17 22:50:10,439 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:10,454 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,455 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,457 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,479 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:10,482 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,485 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 [2020-04-17 22:50:10,485 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:10,499 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,500 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,502 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:10,504 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 69 treesize of output 56 [2020-04-17 22:50:10,505 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:10,526 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:10,527 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. [2020-04-17 22:50:10,527 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 22:50:10,792 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:10,793 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 [2020-04-17 22:50:10,794 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:10,858 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 22:50:10,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:10,859 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. [2020-04-17 22:50:10,859 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-17 22:50:10,987 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:10,988 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 [2020-04-17 22:50:10,989 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:10,995 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:10,996 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:50:10,996 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-17 22:50:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:11,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:50:11,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2020-04-17 22:50:11,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210594006] [2020-04-17 22:50:11,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-04-17 22:50:11,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:50:11,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-04-17 22:50:11,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2020-04-17 22:50:11,025 INFO L87 Difference]: Start difference. First operand 340 states and 762 transitions. Second operand 35 states. [2020-04-17 22:50:11,991 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2020-04-17 22:50:12,334 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2020-04-17 22:50:12,714 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-04-17 22:50:12,906 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-04-17 22:50:14,840 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-04-17 22:50:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:50:16,364 INFO L93 Difference]: Finished difference Result 533 states and 1187 transitions. [2020-04-17 22:50:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-17 22:50:16,365 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 23 [2020-04-17 22:50:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:50:16,369 INFO L225 Difference]: With dead ends: 533 [2020-04-17 22:50:16,370 INFO L226 Difference]: Without dead ends: 533 [2020-04-17 22:50:16,371 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=547, Invalid=3485, Unknown=0, NotChecked=0, Total=4032 [2020-04-17 22:50:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-04-17 22:50:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 340. [2020-04-17 22:50:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-04-17 22:50:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 762 transitions. [2020-04-17 22:50:16,381 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 762 transitions. Word has length 23 [2020-04-17 22:50:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:50:16,382 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 762 transitions. [2020-04-17 22:50:16,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-04-17 22:50:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 762 transitions. [2020-04-17 22:50:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 22:50:16,383 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:50:16,383 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:50:16,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:50:16,588 INFO L427 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-04-17 22:50:16,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:50:16,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1319631296, now seen corresponding path program 10 times [2020-04-17 22:50:16,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:50:16,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083035420] [2020-04-17 22:50:16,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:50:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:50:17,006 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-04-17 22:50:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:18,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083035420] [2020-04-17 22:50:18,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376027705] [2020-04-17 22:50:18,073 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 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 [2020-04-17 22:50:18,139 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 22:50:18,140 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:50:18,142 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 102 conjunts are in the unsatisfiable core [2020-04-17 22:50:18,144 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:50:18,154 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 [2020-04-17 22:50:18,155 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:50:18,188 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 22:50:18,191 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,193 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 [2020-04-17 22:50:18,193 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:18,204 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:18,205 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. [2020-04-17 22:50:18,205 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:50:18,477 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,477 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:18,505 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:18,506 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 [2020-04-17 22:50:18,507 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:18,567 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 22:50:18,568 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. [2020-04-17 22:50:18,568 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-17 22:50:18,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:18,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:18,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,757 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,758 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,770 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:18,783 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 59 treesize of output 52 [2020-04-17 22:50:18,784 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:18,790 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,791 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,792 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,800 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:18,821 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 61 treesize of output 54 [2020-04-17 22:50:18,821 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:18,832 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,833 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,834 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:18,840 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 59 treesize of output 52 [2020-04-17 22:50:18,840 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:18,912 INFO L619 ElimStorePlain]: treesize reduction 135, result has 28.2 percent of original size [2020-04-17 22:50:18,913 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. [2020-04-17 22:50:18,914 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:245, output treesize:53 [2020-04-17 22:50:19,275 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:19,275 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 52 treesize of output 107 [2020-04-17 22:50:19,279 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:19,354 INFO L619 ElimStorePlain]: treesize reduction 84, result has 46.5 percent of original size [2020-04-17 22:50:19,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:19,356 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-04-17 22:50:19,356 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:65, output treesize:58 [2020-04-17 22:50:19,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:19,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:19,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:20,051 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-04-17 22:50:20,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:20,270 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:20,271 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 60 treesize of output 55 [2020-04-17 22:50:20,273 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:20,289 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:20,291 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:50:20,291 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:70, output treesize:7 [2020-04-17 22:50:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:20,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:50:20,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2020-04-17 22:50:20,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206561567] [2020-04-17 22:50:20,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-17 22:50:20,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:50:20,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-17 22:50:20,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-04-17 22:50:20,471 INFO L87 Difference]: Start difference. First operand 340 states and 762 transitions. Second operand 38 states. [2020-04-17 22:50:21,360 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 47 [2020-04-17 22:50:21,676 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-04-17 22:50:21,885 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-04-17 22:50:22,073 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 48 [2020-04-17 22:50:22,274 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 52 [2020-04-17 22:50:22,569 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-04-17 22:50:22,771 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-04-17 22:50:23,074 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 56 [2020-04-17 22:50:23,591 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-04-17 22:50:23,876 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 61 [2020-04-17 22:50:24,119 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 52 [2020-04-17 22:50:24,652 WARN L192 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-04-17 22:50:24,858 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-04-17 22:50:25,127 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 56 [2020-04-17 22:50:25,528 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2020-04-17 22:50:25,832 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 61 [2020-04-17 22:50:26,060 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 54 [2020-04-17 22:50:26,448 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-04-17 22:50:26,672 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2020-04-17 22:50:26,958 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 65 [2020-04-17 22:50:27,664 WARN L192 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2020-04-17 22:50:28,089 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 63 [2020-04-17 22:50:28,343 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 58 [2020-04-17 22:50:28,743 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2020-04-17 22:50:28,967 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 57 [2020-04-17 22:50:29,246 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 56 [2020-04-17 22:50:29,592 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-04-17 22:50:29,881 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-04-17 22:50:30,316 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2020-04-17 22:50:30,869 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2020-04-17 22:50:31,136 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-04-17 22:50:31,362 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2020-04-17 22:50:31,615 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2020-04-17 22:50:31,845 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2020-04-17 22:50:32,227 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2020-04-17 22:50:32,479 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-04-17 22:50:32,954 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 82 [2020-04-17 22:50:33,202 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 48 [2020-04-17 22:50:33,453 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2020-04-17 22:50:33,712 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 54 [2020-04-17 22:50:33,879 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2020-04-17 22:50:34,084 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2020-04-17 22:50:34,363 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-04-17 22:50:34,578 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2020-04-17 22:50:34,855 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 56 [2020-04-17 22:50:35,155 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 73 [2020-04-17 22:50:35,428 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2020-04-17 22:50:35,971 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-04-17 22:50:36,301 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2020-04-17 22:50:36,742 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2020-04-17 22:50:37,057 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 52 [2020-04-17 22:50:37,317 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 76 [2020-04-17 22:50:37,997 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2020-04-17 22:50:38,284 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2020-04-17 22:50:38,512 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 57 [2020-04-17 22:50:38,844 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2020-04-17 22:50:39,125 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 59 [2020-04-17 22:50:39,481 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2020-04-17 22:50:39,789 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2020-04-17 22:50:40,025 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 52 [2020-04-17 22:50:40,278 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2020-04-17 22:50:40,530 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 82 [2020-04-17 22:50:40,969 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-04-17 22:50:41,219 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2020-04-17 22:50:41,542 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 84 [2020-04-17 22:50:41,727 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2020-04-17 22:50:41,943 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2020-04-17 22:50:42,305 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2020-04-17 22:50:42,559 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2020-04-17 22:50:42,779 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2020-04-17 22:50:43,012 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2020-04-17 22:50:44,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:50:44,020 INFO L93 Difference]: Finished difference Result 608 states and 1345 transitions. [2020-04-17 22:50:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-04-17 22:50:44,020 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 23 [2020-04-17 22:50:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:50:44,025 INFO L225 Difference]: With dead ends: 608 [2020-04-17 22:50:44,025 INFO L226 Difference]: Without dead ends: 605 [2020-04-17 22:50:44,030 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6097 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=2313, Invalid=16319, Unknown=0, NotChecked=0, Total=18632 [2020-04-17 22:50:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-04-17 22:50:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 394. [2020-04-17 22:50:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-04-17 22:50:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 884 transitions. [2020-04-17 22:50:44,042 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 884 transitions. Word has length 23 [2020-04-17 22:50:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:50:44,042 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 884 transitions. [2020-04-17 22:50:44,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-04-17 22:50:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 884 transitions. [2020-04-17 22:50:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 22:50:44,044 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:50:44,044 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:50:44,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:50:44,249 INFO L427 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-04-17 22:50:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:50:44,249 INFO L82 PathProgramCache]: Analyzing trace with hash 378903552, now seen corresponding path program 11 times [2020-04-17 22:50:44,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:50:44,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861582935] [2020-04-17 22:50:44,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:50:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:50:44,756 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 37 [2020-04-17 22:50:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:45,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861582935] [2020-04-17 22:50:45,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621800356] [2020-04-17 22:50:45,455 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 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 [2020-04-17 22:50:45,528 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 22:50:45,528 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:50:45,530 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-17 22:50:45,532 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:50:45,544 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 [2020-04-17 22:50:45,545 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:45,564 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 22:50:45,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:45,570 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 [2020-04-17 22:50:45,571 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:45,584 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:45,585 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. [2020-04-17 22:50:45,585 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:50:45,994 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:45,994 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:46,021 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:46,022 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 [2020-04-17 22:50:46,023 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:46,079 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 22:50:46,079 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. [2020-04-17 22:50:46,080 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-17 22:50:46,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:46,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:46,238 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,239 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,240 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,253 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:46,255 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,266 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 [2020-04-17 22:50:46,267 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:46,277 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,278 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,291 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:46,293 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,300 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 68 treesize of output 55 [2020-04-17 22:50:46,301 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:46,309 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,310 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,311 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:46,312 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 69 treesize of output 56 [2020-04-17 22:50:46,312 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:46,331 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:46,332 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. [2020-04-17 22:50:46,332 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:260, output treesize:46 [2020-04-17 22:50:46,633 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:46,634 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 [2020-04-17 22:50:46,635 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:46,698 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-17 22:50:46,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:46,700 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. [2020-04-17 22:50:46,700 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-17 22:50:46,850 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:46,850 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 [2020-04-17 22:50:46,851 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:46,856 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:46,857 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:50:46,857 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-17 22:50:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:46,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:50:46,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2020-04-17 22:50:46,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757832053] [2020-04-17 22:50:46,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-04-17 22:50:46,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:50:46,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-04-17 22:50:46,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2020-04-17 22:50:46,882 INFO L87 Difference]: Start difference. First operand 394 states and 884 transitions. Second operand 34 states. [2020-04-17 22:50:47,790 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-04-17 22:50:48,156 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 56 [2020-04-17 22:50:48,544 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-04-17 22:50:49,729 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-04-17 22:50:50,268 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2020-04-17 22:50:50,768 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2020-04-17 22:50:51,287 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2020-04-17 22:50:51,633 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-04-17 22:50:51,813 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-04-17 22:50:51,999 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-04-17 22:50:52,353 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2020-04-17 22:50:52,727 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-04-17 22:50:53,154 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-04-17 22:50:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:50:54,228 INFO L93 Difference]: Finished difference Result 603 states and 1306 transitions. [2020-04-17 22:50:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-04-17 22:50:54,229 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 23 [2020-04-17 22:50:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:50:54,232 INFO L225 Difference]: With dead ends: 603 [2020-04-17 22:50:54,232 INFO L226 Difference]: Without dead ends: 603 [2020-04-17 22:50:54,234 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=699, Invalid=4703, Unknown=0, NotChecked=0, Total=5402 [2020-04-17 22:50:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-04-17 22:50:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 390. [2020-04-17 22:50:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-04-17 22:50:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 857 transitions. [2020-04-17 22:50:54,243 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 857 transitions. Word has length 23 [2020-04-17 22:50:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:50:54,244 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 857 transitions. [2020-04-17 22:50:54,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-04-17 22:50:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 857 transitions. [2020-04-17 22:50:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-17 22:50:54,245 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:50:54,245 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:50:54,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:50:54,449 INFO L427 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-04-17 22:50:54,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:50:54,449 INFO L82 PathProgramCache]: Analyzing trace with hash 258492924, now seen corresponding path program 12 times [2020-04-17 22:50:54,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:50:54,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783428277] [2020-04-17 22:50:54,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:50:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:50:54,879 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 34 [2020-04-17 22:50:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:55,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783428277] [2020-04-17 22:50:55,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561102267] [2020-04-17 22:50:55,606 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-04-17 22:50:55,677 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-17 22:50:55,678 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:50:55,680 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-17 22:50:55,681 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:50:55,689 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 [2020-04-17 22:50:55,689 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:55,710 INFO L619 ElimStorePlain]: treesize reduction 12, result has 78.9 percent of original size [2020-04-17 22:50:55,714 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:55,715 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 [2020-04-17 22:50:55,716 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:55,725 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:55,725 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. [2020-04-17 22:50:55,726 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:50:56,099 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,099 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:56,124 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:56,125 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 [2020-04-17 22:50:56,126 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:56,182 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 22:50:56,183 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. [2020-04-17 22:50:56,183 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-17 22:50:56,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:56,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:56,334 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,335 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,336 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,352 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:56,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,363 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 68 treesize of output 55 [2020-04-17 22:50:56,364 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:56,370 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,371 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,375 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,386 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:50:56,388 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,395 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 69 treesize of output 56 [2020-04-17 22:50:56,396 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:56,402 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,403 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,404 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:50:56,406 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 83 treesize of output 64 [2020-04-17 22:50:56,406 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:56,422 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:56,423 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. [2020-04-17 22:50:56,423 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:260, output treesize:46 [2020-04-17 22:50:56,627 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:56,627 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 [2020-04-17 22:50:56,628 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:56,690 INFO L619 ElimStorePlain]: treesize reduction 64, result has 47.5 percent of original size [2020-04-17 22:50:56,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:50:56,692 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. [2020-04-17 22:50:56,692 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:29 [2020-04-17 22:50:56,858 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:56,858 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 [2020-04-17 22:50:56,859 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:50:56,864 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:50:56,865 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:50:56,865 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-17 22:50:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:50:56,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:50:56,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 35 [2020-04-17 22:50:56,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748544817] [2020-04-17 22:50:56,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-04-17 22:50:56,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:50:56,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-04-17 22:50:56,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2020-04-17 22:50:56,937 INFO L87 Difference]: Start difference. First operand 390 states and 857 transitions. Second operand 37 states. [2020-04-17 22:50:57,603 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-04-17 22:50:58,166 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-04-17 22:50:58,462 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-04-17 22:50:58,872 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-04-17 22:50:59,098 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-04-17 22:50:59,508 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-04-17 22:50:59,695 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-04-17 22:51:00,067 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2020-04-17 22:51:00,290 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2020-04-17 22:51:00,489 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-04-17 22:51:00,832 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-04-17 22:51:01,229 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2020-04-17 22:51:01,621 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2020-04-17 22:51:01,905 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2020-04-17 22:51:02,951 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-04-17 22:51:03,339 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-04-17 22:51:03,509 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-04-17 22:51:04,004 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2020-04-17 22:51:04,469 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-04-17 22:51:04,633 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-04-17 22:51:05,021 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-04-17 22:51:05,333 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-04-17 22:51:05,536 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2020-04-17 22:51:06,153 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2020-04-17 22:51:06,776 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-04-17 22:51:06,971 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2020-04-17 22:51:07,476 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2020-04-17 22:51:07,830 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-04-17 22:51:07,999 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-04-17 22:51:08,190 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-04-17 22:51:08,530 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2020-04-17 22:51:08,753 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 57 [2020-04-17 22:51:09,051 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-04-17 22:51:09,226 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-04-17 22:51:09,505 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2020-04-17 22:51:09,715 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2020-04-17 22:51:10,076 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-04-17 22:51:10,545 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2020-04-17 22:51:10,757 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2020-04-17 22:51:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:51:12,126 INFO L93 Difference]: Finished difference Result 552 states and 1196 transitions. [2020-04-17 22:51:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-04-17 22:51:12,127 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 23 [2020-04-17 22:51:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:51:12,131 INFO L225 Difference]: With dead ends: 552 [2020-04-17 22:51:12,131 INFO L226 Difference]: Without dead ends: 552 [2020-04-17 22:51:12,135 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4582 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=2012, Invalid=12268, Unknown=0, NotChecked=0, Total=14280 [2020-04-17 22:51:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-04-17 22:51:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 376. [2020-04-17 22:51:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-04-17 22:51:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 825 transitions. [2020-04-17 22:51:12,144 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 825 transitions. Word has length 23 [2020-04-17 22:51:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:51:12,144 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 825 transitions. [2020-04-17 22:51:12,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-04-17 22:51:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 825 transitions. [2020-04-17 22:51:12,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:51:12,145 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:51:12,145 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:51:12,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:12,349 INFO L427 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-04-17 22:51:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:51:12,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2090449835, now seen corresponding path program 13 times [2020-04-17 22:51:12,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:51:12,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602910848] [2020-04-17 22:51:12,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:51:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:51:12,951 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2020-04-17 22:51:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:13,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602910848] [2020-04-17 22:51:13,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370863655] [2020-04-17 22:51:13,775 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:51:13,849 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 96 conjunts are in the unsatisfiable core [2020-04-17 22:51:13,851 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:51:13,876 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 [2020-04-17 22:51:13,877 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:13,898 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 22:51:13,903 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:13,904 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 [2020-04-17 22:51:13,904 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:13,915 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:13,915 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:13,916 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-17 22:51:14,379 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,380 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,381 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:14,410 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:14,410 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 [2020-04-17 22:51:14,412 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:14,474 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 22:51:14,475 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:14,476 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:55 [2020-04-17 22:51:14,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:14,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:14,658 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,664 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,666 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,681 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,685 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 [2020-04-17 22:51:14,685 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:14,697 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,698 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,699 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,712 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,715 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 [2020-04-17 22:51:14,716 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:14,722 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,724 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,725 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:14,728 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 69 treesize of output 56 [2020-04-17 22:51:14,729 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:14,752 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:14,753 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:14,753 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-17 22:51:15,010 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:15,011 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:15,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:15,047 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:15,048 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 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 [2020-04-17 22:51:15,049 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:15,099 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 22:51:15,100 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:15,100 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:71, output treesize:49 [2020-04-17 22:51:15,179 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:15,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:15,213 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 [2020-04-17 22:51:15,214 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:15,239 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 [2020-04-17 22:51:15,240 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:15,249 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 [2020-04-17 22:51:15,250 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:15,316 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 22:51:15,317 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. [2020-04-17 22:51:15,317 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:212, output treesize:46 [2020-04-17 22:51:15,483 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:15,483 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 [2020-04-17 22:51:15,484 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:15,491 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:15,492 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:51:15,492 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-04-17 22:51:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:15,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:51:15,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 35 [2020-04-17 22:51:15,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597194742] [2020-04-17 22:51:15,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-04-17 22:51:15,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:51:15,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-04-17 22:51:15,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1213, Unknown=0, NotChecked=0, Total=1332 [2020-04-17 22:51:15,573 INFO L87 Difference]: Start difference. First operand 376 states and 825 transitions. Second operand 37 states. [2020-04-17 22:51:16,225 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-04-17 22:51:16,561 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2020-04-17 22:51:16,806 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2020-04-17 22:51:17,047 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-04-17 22:51:17,952 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-04-17 22:51:18,182 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-04-17 22:51:18,648 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-04-17 22:51:18,950 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-04-17 22:51:19,352 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-04-17 22:51:19,639 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-04-17 22:51:20,123 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-04-17 22:51:20,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:51:20,998 INFO L93 Difference]: Finished difference Result 556 states and 1213 transitions. [2020-04-17 22:51:20,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 22:51:20,998 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 25 [2020-04-17 22:51:20,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:51:21,002 INFO L225 Difference]: With dead ends: 556 [2020-04-17 22:51:21,002 INFO L226 Difference]: Without dead ends: 556 [2020-04-17 22:51:21,003 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=486, Invalid=3420, Unknown=0, NotChecked=0, Total=3906 [2020-04-17 22:51:21,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-04-17 22:51:21,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 443. [2020-04-17 22:51:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-04-17 22:51:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 980 transitions. [2020-04-17 22:51:21,013 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 980 transitions. Word has length 25 [2020-04-17 22:51:21,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:51:21,013 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 980 transitions. [2020-04-17 22:51:21,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-04-17 22:51:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 980 transitions. [2020-04-17 22:51:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:51:21,015 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:51:21,015 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:51:21,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:21,219 INFO L427 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-04-17 22:51:21,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:51:21,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1978593398, now seen corresponding path program 1 times [2020-04-17 22:51:21,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:51:21,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204339145] [2020-04-17 22:51:21,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:51:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:51:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:21,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204339145] [2020-04-17 22:51:21,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923127555] [2020-04-17 22:51:21,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:51:22,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 80 conjunts are in the unsatisfiable core [2020-04-17 22:51:22,017 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:51:22,040 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,050 INFO L343 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-04-17 22:51:22,050 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 22:51:22,050 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:22,057 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:22,057 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:22,058 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:27 [2020-04-17 22:51:22,118 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,142 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:22,143 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 76 [2020-04-17 22:51:22,144 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:22,179 INFO L619 ElimStorePlain]: treesize reduction 46, result has 43.2 percent of original size [2020-04-17 22:51:22,180 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:51:22,180 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:26 [2020-04-17 22:51:22,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:22,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:22,227 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,232 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,233 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 33 [2020-04-17 22:51:22,234 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:22,240 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,245 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,247 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 34 [2020-04-17 22:51:22,247 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:22,251 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,252 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 42 [2020-04-17 22:51:22,252 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:22,257 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:22,257 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:51:22,258 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:182, output treesize:20 [2020-04-17 22:51:22,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:22,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:22,340 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,341 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 43 [2020-04-17 22:51:22,342 INFO L539 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:22,352 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:22,354 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34 [2020-04-17 22:51:22,355 INFO L539 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:22,359 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 35 [2020-04-17 22:51:22,359 INFO L539 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:22,395 INFO L619 ElimStorePlain]: treesize reduction 85, result has 24.8 percent of original size [2020-04-17 22:51:22,396 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:22,396 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:177, output treesize:28 [2020-04-17 22:51:22,482 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:22,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:51:22,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 22 [2020-04-17 22:51:22,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977060960] [2020-04-17 22:51:22,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-17 22:51:22,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:51:22,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-17 22:51:22,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-04-17 22:51:22,490 INFO L87 Difference]: Start difference. First operand 443 states and 980 transitions. Second operand 23 states. [2020-04-17 22:51:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:51:24,822 INFO L93 Difference]: Finished difference Result 500 states and 1086 transitions. [2020-04-17 22:51:24,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-17 22:51:24,823 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-04-17 22:51:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:51:24,826 INFO L225 Difference]: With dead ends: 500 [2020-04-17 22:51:24,826 INFO L226 Difference]: Without dead ends: 483 [2020-04-17 22:51:24,827 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=276, Invalid=1284, Unknown=0, NotChecked=0, Total=1560 [2020-04-17 22:51:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-04-17 22:51:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 478. [2020-04-17 22:51:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-04-17 22:51:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1053 transitions. [2020-04-17 22:51:24,836 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1053 transitions. Word has length 25 [2020-04-17 22:51:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:51:24,836 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 1053 transitions. [2020-04-17 22:51:24,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-17 22:51:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1053 transitions. [2020-04-17 22:51:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:51:24,837 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:51:24,837 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:51:25,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:25,041 INFO L427 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-04-17 22:51:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:51:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1578590741, now seen corresponding path program 14 times [2020-04-17 22:51:25,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:51:25,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209493286] [2020-04-17 22:51:25,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:51:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:51:25,508 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-04-17 22:51:25,638 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 40 [2020-04-17 22:51:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:26,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209493286] [2020-04-17 22:51:26,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043158783] [2020-04-17 22:51:26,647 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:26,715 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 22:51:26,716 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:51:26,717 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 111 conjunts are in the unsatisfiable core [2020-04-17 22:51:26,719 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:51:26,729 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 [2020-04-17 22:51:26,730 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:26,750 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 22:51:26,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:26,757 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 [2020-04-17 22:51:26,757 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:26,767 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:26,768 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. [2020-04-17 22:51:26,769 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:51:27,193 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,194 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,195 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:27,222 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:27,223 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 [2020-04-17 22:51:27,224 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:27,288 INFO L619 ElimStorePlain]: treesize reduction 50, result has 54.5 percent of original size [2020-04-17 22:51:27,289 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. [2020-04-17 22:51:27,289 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:60 [2020-04-17 22:51:27,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:27,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:27,473 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,474 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,475 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,497 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,500 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 [2020-04-17 22:51:27,500 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:27,507 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,508 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,509 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,527 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,530 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 [2020-04-17 22:51:27,531 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:27,535 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,538 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 [2020-04-17 22:51:27,538 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:27,560 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:27,560 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. [2020-04-17 22:51:27,561 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:278, output treesize:52 [2020-04-17 22:51:27,775 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:27,819 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:27,820 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 [2020-04-17 22:51:27,821 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:27,890 INFO L619 ElimStorePlain]: treesize reduction 72, result has 45.9 percent of original size [2020-04-17 22:51:27,891 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. [2020-04-17 22:51:27,891 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:74, output treesize:58 [2020-04-17 22:51:28,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:28,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:28,075 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:28,098 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2020-04-17 22:51:28,099 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:28,112 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:28,133 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2020-04-17 22:51:28,134 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:28,142 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2020-04-17 22:51:28,142 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:28,162 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:28,163 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. [2020-04-17 22:51:28,163 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:240, output treesize:46 [2020-04-17 22:51:28,533 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:28,534 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 [2020-04-17 22:51:28,534 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:28,540 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:28,540 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:51:28,540 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-04-17 22:51:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:28,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:51:28,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2020-04-17 22:51:28,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472014457] [2020-04-17 22:51:28,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-17 22:51:28,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:51:28,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-17 22:51:28,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2020-04-17 22:51:28,571 INFO L87 Difference]: Start difference. First operand 478 states and 1053 transitions. Second operand 38 states. [2020-04-17 22:51:29,649 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-17 22:51:29,864 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-04-17 22:51:30,899 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2020-04-17 22:51:31,113 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-04-17 22:51:31,444 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 51 [2020-04-17 22:51:31,649 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-04-17 22:51:31,820 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-04-17 22:51:32,152 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-04-17 22:51:32,415 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-04-17 22:51:32,927 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2020-04-17 22:51:33,470 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2020-04-17 22:51:33,676 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-04-17 22:51:34,104 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2020-04-17 22:51:34,310 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2020-04-17 22:51:34,512 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-04-17 22:51:34,954 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2020-04-17 22:51:35,226 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2020-04-17 22:51:35,794 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2020-04-17 22:51:36,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:51:36,817 INFO L93 Difference]: Finished difference Result 676 states and 1481 transitions. [2020-04-17 22:51:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-04-17 22:51:36,818 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 25 [2020-04-17 22:51:36,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:51:36,822 INFO L225 Difference]: With dead ends: 676 [2020-04-17 22:51:36,822 INFO L226 Difference]: Without dead ends: 676 [2020-04-17 22:51:36,822 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=609, Invalid=4793, Unknown=0, NotChecked=0, Total=5402 [2020-04-17 22:51:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-04-17 22:51:36,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 542. [2020-04-17 22:51:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-04-17 22:51:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1203 transitions. [2020-04-17 22:51:36,833 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1203 transitions. Word has length 25 [2020-04-17 22:51:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:51:36,833 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 1203 transitions. [2020-04-17 22:51:36,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-04-17 22:51:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1203 transitions. [2020-04-17 22:51:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:51:36,835 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:51:36,835 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:51:37,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:37,040 INFO L427 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-04-17 22:51:37,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:51:37,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1352666678, now seen corresponding path program 2 times [2020-04-17 22:51:37,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:51:37,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901546154] [2020-04-17 22:51:37,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:51:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:51:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:38,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901546154] [2020-04-17 22:51:38,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938231874] [2020-04-17 22:51:38,147 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:38,218 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 22:51:38,218 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:51:38,220 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 86 conjunts are in the unsatisfiable core [2020-04-17 22:51:38,222 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:51:38,250 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 [2020-04-17 22:51:38,251 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:51:38,276 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 22:51:38,281 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:38,282 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 [2020-04-17 22:51:38,282 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:38,294 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:38,295 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. [2020-04-17 22:51:38,295 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:51:38,578 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:38,604 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:38,605 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 86 [2020-04-17 22:51:38,606 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:38,651 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-17 22:51:38,652 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. [2020-04-17 22:51:38,652 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:37 [2020-04-17 22:51:38,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:38,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:38,788 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:38,797 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 22:51:38,798 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:38,805 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:38,810 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 22:51:38,811 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:38,815 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 22:51:38,816 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:38,827 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:38,828 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. [2020-04-17 22:51:38,828 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 22:51:38,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:38,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:39,010 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:39,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:39,013 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 22:51:39,014 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:39,031 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:39,033 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:39,034 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 22:51:39,034 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:39,038 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 22:51:39,039 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:39,048 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:39,048 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. [2020-04-17 22:51:39,049 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 22:51:39,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:39,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:51:39,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2020-04-17 22:51:39,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082673008] [2020-04-17 22:51:39,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-17 22:51:39,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:51:39,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-17 22:51:39,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2020-04-17 22:51:39,174 INFO L87 Difference]: Start difference. First operand 542 states and 1203 transitions. Second operand 33 states. [2020-04-17 22:51:39,816 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-04-17 22:51:40,097 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2020-04-17 22:51:40,358 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-04-17 22:51:40,532 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-04-17 22:51:40,723 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-04-17 22:51:40,973 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 58 [2020-04-17 22:51:41,394 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2020-04-17 22:51:41,605 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-04-17 22:51:41,822 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2020-04-17 22:51:42,002 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2020-04-17 22:51:42,263 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 58 [2020-04-17 22:51:42,647 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2020-04-17 22:51:42,919 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 58 [2020-04-17 22:51:43,086 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 47 [2020-04-17 22:51:43,519 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2020-04-17 22:51:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:51:45,321 INFO L93 Difference]: Finished difference Result 627 states and 1375 transitions. [2020-04-17 22:51:45,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-17 22:51:45,322 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 25 [2020-04-17 22:51:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:51:45,326 INFO L225 Difference]: With dead ends: 627 [2020-04-17 22:51:45,326 INFO L226 Difference]: Without dead ends: 610 [2020-04-17 22:51:45,327 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=569, Invalid=2971, Unknown=0, NotChecked=0, Total=3540 [2020-04-17 22:51:45,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-04-17 22:51:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 560. [2020-04-17 22:51:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-04-17 22:51:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1244 transitions. [2020-04-17 22:51:45,337 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1244 transitions. Word has length 25 [2020-04-17 22:51:45,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:51:45,337 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 1244 transitions. [2020-04-17 22:51:45,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-17 22:51:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1244 transitions. [2020-04-17 22:51:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:51:45,338 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:51:45,339 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:51:45,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:45,543 INFO L427 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-04-17 22:51:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:51:45,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1894519953, now seen corresponding path program 15 times [2020-04-17 22:51:45,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:51:45,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425177835] [2020-04-17 22:51:45,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:51:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:51:45,978 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 38 [2020-04-17 22:51:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:46,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425177835] [2020-04-17 22:51:46,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877813452] [2020-04-17 22:51:46,948 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:47,039 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-17 22:51:47,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:51:47,042 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 100 conjunts are in the unsatisfiable core [2020-04-17 22:51:47,043 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:51:47,073 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 [2020-04-17 22:51:47,073 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:51:47,101 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 22:51:47,105 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,107 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 [2020-04-17 22:51:47,107 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:47,116 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:47,117 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:47,118 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-17 22:51:47,514 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,515 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:47,543 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:47,543 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 [2020-04-17 22:51:47,544 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:47,600 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 22:51:47,601 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:47,601 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:52 [2020-04-17 22:51:47,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:47,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:47,829 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,831 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,833 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,858 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:47,860 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,863 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 69 treesize of output 56 [2020-04-17 22:51:47,864 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:47,869 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,871 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,872 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,890 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:47,891 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,893 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 68 treesize of output 55 [2020-04-17 22:51:47,894 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:47,899 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,900 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,901 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:47,902 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 83 treesize of output 64 [2020-04-17 22:51:47,902 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:47,923 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:47,924 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:47,924 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-17 22:51:48,137 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:48,138 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:48,139 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:48,192 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:48,192 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 [2020-04-17 22:51:48,194 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:48,252 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 22:51:48,253 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:51:48,253 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:71, output treesize:49 [2020-04-17 22:51:48,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:48,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:48,371 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 [2020-04-17 22:51:48,371 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:48,396 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 [2020-04-17 22:51:48,397 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:48,410 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 [2020-04-17 22:51:48,411 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:48,477 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 22:51:48,478 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. [2020-04-17 22:51:48,478 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:212, output treesize:46 [2020-04-17 22:51:48,643 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:48,644 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 [2020-04-17 22:51:48,644 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:48,652 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:48,652 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:51:48,652 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-04-17 22:51:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:48,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:51:48,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2020-04-17 22:51:48,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765907590] [2020-04-17 22:51:48,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-17 22:51:48,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:51:48,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-17 22:51:48,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2020-04-17 22:51:48,738 INFO L87 Difference]: Start difference. First operand 560 states and 1244 transitions. Second operand 38 states. [2020-04-17 22:51:49,774 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-04-17 22:51:49,986 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2020-04-17 22:51:50,334 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2020-04-17 22:51:50,532 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-04-17 22:51:51,337 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-04-17 22:51:51,786 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-04-17 22:51:52,138 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-04-17 22:51:52,818 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2020-04-17 22:51:53,241 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2020-04-17 22:51:53,775 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2020-04-17 22:51:54,159 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2020-04-17 22:51:54,348 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 47 [2020-04-17 22:51:54,757 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2020-04-17 22:51:55,252 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-04-17 22:51:55,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:51:55,787 INFO L93 Difference]: Finished difference Result 775 states and 1706 transitions. [2020-04-17 22:51:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-04-17 22:51:55,788 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 25 [2020-04-17 22:51:55,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:51:55,792 INFO L225 Difference]: With dead ends: 775 [2020-04-17 22:51:55,792 INFO L226 Difference]: Without dead ends: 775 [2020-04-17 22:51:55,792 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=569, Invalid=4123, Unknown=0, NotChecked=0, Total=4692 [2020-04-17 22:51:55,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-04-17 22:51:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 560. [2020-04-17 22:51:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-04-17 22:51:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1244 transitions. [2020-04-17 22:51:55,802 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1244 transitions. Word has length 25 [2020-04-17 22:51:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:51:55,802 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 1244 transitions. [2020-04-17 22:51:55,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-04-17 22:51:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1244 transitions. [2020-04-17 22:51:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:51:55,804 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:51:55,804 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:51:56,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:56,008 INFO L427 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-04-17 22:51:56,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:51:56,008 INFO L82 PathProgramCache]: Analyzing trace with hash 413070255, now seen corresponding path program 16 times [2020-04-17 22:51:56,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:51:56,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098443625] [2020-04-17 22:51:56,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:51:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:51:56,501 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-04-17 22:51:56,744 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 48 [2020-04-17 22:51:56,952 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2020-04-17 22:51:57,111 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2020-04-17 22:51:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:57,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098443625] [2020-04-17 22:51:57,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908076458] [2020-04-17 22:51:57,869 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:51:57,932 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 22:51:57,932 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:51:57,934 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 100 conjunts are in the unsatisfiable core [2020-04-17 22:51:57,935 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:51:57,944 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 [2020-04-17 22:51:57,945 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:51:57,970 INFO L619 ElimStorePlain]: treesize reduction 14, result has 75.0 percent of original size [2020-04-17 22:51:57,981 INFO L343 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2020-04-17 22:51:57,981 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 22:51:57,982 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:57,989 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:57,990 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. [2020-04-17 22:51:57,990 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:49, output treesize:28 [2020-04-17 22:51:58,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,402 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:58,429 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:58,430 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 [2020-04-17 22:51:58,431 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:58,486 INFO L619 ElimStorePlain]: treesize reduction 46, result has 51.6 percent of original size [2020-04-17 22:51:58,487 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. [2020-04-17 22:51:58,487 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:62, output treesize:49 [2020-04-17 22:51:58,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:58,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:58,638 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,639 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,641 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,655 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:58,657 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,665 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 [2020-04-17 22:51:58,666 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:58,676 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,677 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,679 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,693 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:51:58,695 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,703 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 68 treesize of output 55 [2020-04-17 22:51:58,704 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:58,709 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,710 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,711 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:58,713 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 69 treesize of output 56 [2020-04-17 22:51:58,713 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:58,729 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:58,730 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. [2020-04-17 22:51:58,730 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-17 22:51:59,010 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,013 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,055 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:51:59,055 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 [2020-04-17 22:51:59,056 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:59,115 INFO L619 ElimStorePlain]: treesize reduction 72, result has 43.3 percent of original size [2020-04-17 22:51:59,115 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. [2020-04-17 22:51:59,116 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:68, output treesize:46 [2020-04-17 22:51:59,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:59,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:51:59,219 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,220 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,221 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,244 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 59 treesize of output 52 [2020-04-17 22:51:59,245 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:59,250 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,251 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,252 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,272 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 59 treesize of output 52 [2020-04-17 22:51:59,272 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:59,277 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,278 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:51:59,285 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 61 treesize of output 54 [2020-04-17 22:51:59,286 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:59,333 INFO L619 ElimStorePlain]: treesize reduction 123, result has 27.6 percent of original size [2020-04-17 22:51:59,333 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. [2020-04-17 22:51:59,334 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:227, output treesize:47 [2020-04-17 22:51:59,709 INFO L343 Elim1Store]: treesize reduction 32, result has 47.5 percent of original size [2020-04-17 22:51:59,710 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 56 [2020-04-17 22:51:59,710 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:51:59,728 INFO L619 ElimStorePlain]: treesize reduction 26, result has 35.0 percent of original size [2020-04-17 22:51:59,729 INFO L539 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:51:59,729 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:63, output treesize:7 [2020-04-17 22:51:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:51:59,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:51:59,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2020-04-17 22:51:59,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026385289] [2020-04-17 22:51:59,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-17 22:51:59,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:51:59,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-17 22:51:59,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2020-04-17 22:51:59,787 INFO L87 Difference]: Start difference. First operand 560 states and 1244 transitions. Second operand 36 states. [2020-04-17 22:52:01,069 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 52 [2020-04-17 22:52:01,537 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 59 [2020-04-17 22:52:01,742 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-04-17 22:52:02,028 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 65 [2020-04-17 22:52:03,412 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2020-04-17 22:52:03,590 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 48 [2020-04-17 22:52:04,079 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 66 [2020-04-17 22:52:04,305 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-04-17 22:52:04,605 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 67 [2020-04-17 22:52:05,003 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2020-04-17 22:52:05,467 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2020-04-17 22:52:06,027 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 67 [2020-04-17 22:52:06,257 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2020-04-17 22:52:06,719 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 69 [2020-04-17 22:52:06,922 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 56 [2020-04-17 22:52:07,345 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 75 [2020-04-17 22:52:07,579 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 58 [2020-04-17 22:52:07,779 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 50 [2020-04-17 22:52:07,963 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 64 [2020-04-17 22:52:08,450 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 77 [2020-04-17 22:52:08,710 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 66 [2020-04-17 22:52:09,516 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-04-17 22:52:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:52:10,495 INFO L93 Difference]: Finished difference Result 836 states and 1848 transitions. [2020-04-17 22:52:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-04-17 22:52:10,496 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 25 [2020-04-17 22:52:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:52:10,501 INFO L225 Difference]: With dead ends: 836 [2020-04-17 22:52:10,501 INFO L226 Difference]: Without dead ends: 836 [2020-04-17 22:52:10,502 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=880, Invalid=5762, Unknown=0, NotChecked=0, Total=6642 [2020-04-17 22:52:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-04-17 22:52:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 560. [2020-04-17 22:52:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-04-17 22:52:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1244 transitions. [2020-04-17 22:52:10,513 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1244 transitions. Word has length 25 [2020-04-17 22:52:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:52:10,513 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 1244 transitions. [2020-04-17 22:52:10,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-17 22:52:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1244 transitions. [2020-04-17 22:52:10,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:52:10,515 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:52:10,515 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:52:10,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:10,719 INFO L427 AbstractCegarLoop]: === Iteration 25 === [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]=== [2020-04-17 22:52:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:52:10,719 INFO L82 PathProgramCache]: Analyzing trace with hash 638994318, now seen corresponding path program 3 times [2020-04-17 22:52:10,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:52:10,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428274717] [2020-04-17 22:52:10,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:52:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:52:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:11,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428274717] [2020-04-17 22:52:11,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496183248] [2020-04-17 22:52:11,486 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:11,562 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-17 22:52:11,562 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:52:11,564 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 78 conjunts are in the unsatisfiable core [2020-04-17 22:52:11,565 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:52:11,570 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:11,581 INFO L343 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-04-17 22:52:11,582 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 22:52:11,582 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:11,591 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:11,592 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:11,592 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:27 [2020-04-17 22:52:11,673 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:11,695 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:11,696 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 76 [2020-04-17 22:52:11,696 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:11,725 INFO L619 ElimStorePlain]: treesize reduction 46, result has 43.2 percent of original size [2020-04-17 22:52:11,725 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:52:11,726 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:26 [2020-04-17 22:52:11,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:11,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:11,775 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:11,778 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2020-04-17 22:52:11,779 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:11,786 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:11,788 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 40 [2020-04-17 22:52:11,789 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:11,796 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:11,796 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2020-04-17 22:52:11,796 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:11,801 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:11,802 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:52:11,802 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:156, output treesize:18 [2020-04-17 22:52:11,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:11,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:11,881 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:11,882 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 43 [2020-04-17 22:52:11,883 INFO L539 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:11,892 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:11,893 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 35 [2020-04-17 22:52:11,894 INFO L539 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:11,899 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34 [2020-04-17 22:52:11,900 INFO L539 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:11,936 INFO L619 ElimStorePlain]: treesize reduction 85, result has 24.8 percent of original size [2020-04-17 22:52:11,937 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:11,937 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:177, output treesize:28 [2020-04-17 22:52:11,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:12,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:52:12,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 22 [2020-04-17 22:52:12,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842503650] [2020-04-17 22:52:12,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-17 22:52:12,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:52:12,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-17 22:52:12,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-04-17 22:52:12,016 INFO L87 Difference]: Start difference. First operand 560 states and 1244 transitions. Second operand 23 states. [2020-04-17 22:52:13,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:52:13,712 INFO L93 Difference]: Finished difference Result 660 states and 1449 transitions. [2020-04-17 22:52:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-17 22:52:13,712 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-04-17 22:52:13,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:52:13,716 INFO L225 Difference]: With dead ends: 660 [2020-04-17 22:52:13,716 INFO L226 Difference]: Without dead ends: 643 [2020-04-17 22:52:13,717 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-04-17 22:52:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-04-17 22:52:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 580. [2020-04-17 22:52:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-04-17 22:52:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1288 transitions. [2020-04-17 22:52:13,725 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1288 transitions. Word has length 25 [2020-04-17 22:52:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:52:13,725 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 1288 transitions. [2020-04-17 22:52:13,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-17 22:52:13,725 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1288 transitions. [2020-04-17 22:52:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:52:13,726 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:52:13,727 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:52:13,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:13,930 INFO L427 AbstractCegarLoop]: === Iteration 26 === [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]=== [2020-04-17 22:52:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:52:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash 617486703, now seen corresponding path program 17 times [2020-04-17 22:52:13,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:52:13,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786561197] [2020-04-17 22:52:13,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:52:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:52:14,427 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 34 [2020-04-17 22:52:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:15,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786561197] [2020-04-17 22:52:15,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883466167] [2020-04-17 22:52:15,380 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:15,446 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 22:52:15,447 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:52:15,448 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 94 conjunts are in the unsatisfiable core [2020-04-17 22:52:15,449 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:52:15,458 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 [2020-04-17 22:52:15,459 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:52:15,484 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 22:52:15,488 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:15,489 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 [2020-04-17 22:52:15,489 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:15,498 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:15,499 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. [2020-04-17 22:52:15,499 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:52:15,900 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:15,901 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:52:15,926 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:15,926 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 [2020-04-17 22:52:15,927 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:15,982 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 22:52:15,983 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. [2020-04-17 22:52:15,983 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-17 22:52:16,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:16,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:16,148 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,149 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,150 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,167 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:52:16,169 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,177 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 69 treesize of output 56 [2020-04-17 22:52:16,178 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:16,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,188 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,200 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:52:16,202 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,209 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 68 treesize of output 55 [2020-04-17 22:52:16,210 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:16,215 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,217 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,224 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,225 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 83 treesize of output 64 [2020-04-17 22:52:16,225 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:16,242 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:16,242 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. [2020-04-17 22:52:16,243 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:260, output treesize:46 [2020-04-17 22:52:16,567 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,568 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:16,603 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:16,604 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 [2020-04-17 22:52:16,605 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:16,667 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 22:52:16,668 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. [2020-04-17 22:52:16,668 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 22:52:16,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:16,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:16,838 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 [2020-04-17 22:52:16,839 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:16,864 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 [2020-04-17 22:52:16,865 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:16,876 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 [2020-04-17 22:52:16,877 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:16,936 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 22:52:16,936 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. [2020-04-17 22:52:16,937 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:212, output treesize:46 [2020-04-17 22:52:17,098 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:17,099 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 [2020-04-17 22:52:17,099 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:17,111 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:17,111 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:52:17,112 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:7 [2020-04-17 22:52:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:17,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:52:17,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 38 [2020-04-17 22:52:17,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024645039] [2020-04-17 22:52:17,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-04-17 22:52:17,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:52:17,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-04-17 22:52:17,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1434, Unknown=0, NotChecked=0, Total=1560 [2020-04-17 22:52:17,208 INFO L87 Difference]: Start difference. First operand 580 states and 1288 transitions. Second operand 40 states. [2020-04-17 22:52:18,190 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-04-17 22:52:18,567 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 58 [2020-04-17 22:52:18,978 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 63 [2020-04-17 22:52:20,171 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-04-17 22:52:20,576 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-04-17 22:52:20,885 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-04-17 22:52:21,508 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2020-04-17 22:52:21,942 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-04-17 22:52:22,414 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-04-17 22:52:22,734 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-04-17 22:52:23,300 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-04-17 22:52:24,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:52:24,780 INFO L93 Difference]: Finished difference Result 855 states and 1893 transitions. [2020-04-17 22:52:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-17 22:52:24,780 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 25 [2020-04-17 22:52:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:52:24,785 INFO L225 Difference]: With dead ends: 855 [2020-04-17 22:52:24,785 INFO L226 Difference]: Without dead ends: 855 [2020-04-17 22:52:24,786 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=755, Invalid=5251, Unknown=0, NotChecked=0, Total=6006 [2020-04-17 22:52:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-04-17 22:52:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 572. [2020-04-17 22:52:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-04-17 22:52:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1272 transitions. [2020-04-17 22:52:24,797 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1272 transitions. Word has length 25 [2020-04-17 22:52:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:52:24,798 INFO L479 AbstractCegarLoop]: Abstraction has 572 states and 1272 transitions. [2020-04-17 22:52:24,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-04-17 22:52:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1272 transitions. [2020-04-17 22:52:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:52:24,799 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:52:24,799 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:52:25,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:25,005 INFO L427 AbstractCegarLoop]: === Iteration 27 === [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]=== [2020-04-17 22:52:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:52:25,005 INFO L82 PathProgramCache]: Analyzing trace with hash -631310293, now seen corresponding path program 18 times [2020-04-17 22:52:25,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:52:25,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481626778] [2020-04-17 22:52:25,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:52:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:52:25,452 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 38 [2020-04-17 22:52:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:26,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481626778] [2020-04-17 22:52:26,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085452073] [2020-04-17 22:52:26,290 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:26,365 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-17 22:52:26,365 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:52:26,367 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 105 conjunts are in the unsatisfiable core [2020-04-17 22:52:26,369 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:52:26,379 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 [2020-04-17 22:52:26,379 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:26,397 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 22:52:26,400 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:26,401 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 [2020-04-17 22:52:26,401 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:26,410 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:26,411 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. [2020-04-17 22:52:26,411 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:52:26,785 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:26,785 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:52:26,812 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:26,812 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 [2020-04-17 22:52:26,813 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:26,870 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-17 22:52:26,870 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. [2020-04-17 22:52:26,870 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-17 22:52:26,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:26,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:27,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,015 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,030 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:52:27,032 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,041 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 69 treesize of output 56 [2020-04-17 22:52:27,042 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,047 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,049 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,050 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,063 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:52:27,065 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,072 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 [2020-04-17 22:52:27,073 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,078 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,080 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,081 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 68 treesize of output 55 [2020-04-17 22:52:27,082 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,101 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:27,101 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. [2020-04-17 22:52:27,102 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:260, output treesize:46 [2020-04-17 22:52:27,420 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,422 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,423 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:27,462 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:27,463 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 [2020-04-17 22:52:27,464 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,520 INFO L619 ElimStorePlain]: treesize reduction 72, result has 43.3 percent of original size [2020-04-17 22:52:27,521 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. [2020-04-17 22:52:27,521 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:68, output treesize:46 [2020-04-17 22:52:27,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:27,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:27,616 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 [2020-04-17 22:52:27,617 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,643 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 [2020-04-17 22:52:27,644 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,655 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 [2020-04-17 22:52:27,656 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,710 INFO L619 ElimStorePlain]: treesize reduction 115, result has 27.2 percent of original size [2020-04-17 22:52:27,711 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. [2020-04-17 22:52:27,711 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:203, output treesize:43 [2020-04-17 22:52:27,960 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:27,961 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 [2020-04-17 22:52:27,962 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,967 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:27,968 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:52:27,968 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:7 [2020-04-17 22:52:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:28,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:52:28,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 38 [2020-04-17 22:52:28,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276639088] [2020-04-17 22:52:28,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-04-17 22:52:28,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:52:28,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-04-17 22:52:28,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2020-04-17 22:52:28,049 INFO L87 Difference]: Start difference. First operand 572 states and 1272 transitions. Second operand 40 states. [2020-04-17 22:52:29,273 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2020-04-17 22:52:29,636 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2020-04-17 22:52:30,889 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-04-17 22:52:31,364 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-04-17 22:52:31,770 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-04-17 22:52:31,943 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-04-17 22:52:32,572 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-04-17 22:52:33,117 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-04-17 22:52:33,316 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-04-17 22:52:33,809 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-04-17 22:52:34,211 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-04-17 22:52:34,406 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-04-17 22:52:34,725 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-04-17 22:52:34,930 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-04-17 22:52:35,262 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-04-17 22:52:35,458 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-04-17 22:52:35,675 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-04-17 22:52:35,926 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-04-17 22:52:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:52:36,756 INFO L93 Difference]: Finished difference Result 836 states and 1859 transitions. [2020-04-17 22:52:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-17 22:52:36,757 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 25 [2020-04-17 22:52:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:52:36,762 INFO L225 Difference]: With dead ends: 836 [2020-04-17 22:52:36,762 INFO L226 Difference]: Without dead ends: 836 [2020-04-17 22:52:36,772 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=843, Invalid=5009, Unknown=0, NotChecked=0, Total=5852 [2020-04-17 22:52:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-04-17 22:52:36,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 578. [2020-04-17 22:52:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-17 22:52:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1285 transitions. [2020-04-17 22:52:36,783 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1285 transitions. Word has length 25 [2020-04-17 22:52:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:52:36,784 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1285 transitions. [2020-04-17 22:52:36,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-04-17 22:52:36,784 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1285 transitions. [2020-04-17 22:52:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:52:36,785 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:52:36,785 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:52:36,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:36,989 INFO L427 AbstractCegarLoop]: === Iteration 28 === [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]=== [2020-04-17 22:52:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:52:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash 927642954, now seen corresponding path program 4 times [2020-04-17 22:52:36,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:52:36,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971840730] [2020-04-17 22:52:36,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:52:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:52:37,512 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 31 [2020-04-17 22:52:37,649 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 30 [2020-04-17 22:52:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:38,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971840730] [2020-04-17 22:52:38,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732394635] [2020-04-17 22:52:38,018 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:38,100 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-17 22:52:38,101 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:52:38,102 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 84 conjunts are in the unsatisfiable core [2020-04-17 22:52:38,103 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:52:38,111 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 [2020-04-17 22:52:38,112 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,129 INFO L619 ElimStorePlain]: treesize reduction 13, result has 76.4 percent of original size [2020-04-17 22:52:38,143 INFO L343 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2020-04-17 22:52:38,143 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2020-04-17 22:52:38,143 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,150 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:38,151 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. [2020-04-17 22:52:38,151 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:49, output treesize:28 [2020-04-17 22:52:38,348 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,372 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:38,372 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 [2020-04-17 22:52:38,373 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,413 INFO L619 ElimStorePlain]: treesize reduction 46, result has 48.3 percent of original size [2020-04-17 22:52:38,413 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. [2020-04-17 22:52:38,414 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:56, output treesize:34 [2020-04-17 22:52:38,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:38,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:38,523 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,534 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,535 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-04-17 22:52:38,536 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,541 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,552 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,553 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2020-04-17 22:52:38,553 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,565 INFO L343 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2020-04-17 22:52:38,565 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 43 [2020-04-17 22:52:38,566 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,579 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:38,579 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. [2020-04-17 22:52:38,579 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:206, output treesize:28 [2020-04-17 22:52:38,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:38,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:38,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,749 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2020-04-17 22:52:38,750 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,758 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,768 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,771 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2020-04-17 22:52:38,772 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:38,778 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2020-04-17 22:52:38,778 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:38,788 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:38,788 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. [2020-04-17 22:52:38,789 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:186, output treesize:28 [2020-04-17 22:52:38,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:38,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:52:38,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 31 [2020-04-17 22:52:38,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024749078] [2020-04-17 22:52:38,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-04-17 22:52:38,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:52:38,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-04-17 22:52:38,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2020-04-17 22:52:38,893 INFO L87 Difference]: Start difference. First operand 578 states and 1285 transitions. Second operand 32 states. [2020-04-17 22:52:39,653 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2020-04-17 22:52:39,837 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-04-17 22:52:40,240 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-04-17 22:52:40,478 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-04-17 22:52:40,855 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-04-17 22:52:41,476 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-04-17 22:52:41,670 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2020-04-17 22:52:41,882 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 48 [2020-04-17 22:52:42,217 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2020-04-17 22:52:42,443 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2020-04-17 22:52:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:52:44,406 INFO L93 Difference]: Finished difference Result 665 states and 1461 transitions. [2020-04-17 22:52:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-17 22:52:44,407 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 25 [2020-04-17 22:52:44,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:52:44,411 INFO L225 Difference]: With dead ends: 665 [2020-04-17 22:52:44,411 INFO L226 Difference]: Without dead ends: 648 [2020-04-17 22:52:44,411 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=531, Invalid=3251, Unknown=0, NotChecked=0, Total=3782 [2020-04-17 22:52:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-04-17 22:52:44,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 550. [2020-04-17 22:52:44,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-04-17 22:52:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1224 transitions. [2020-04-17 22:52:44,419 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1224 transitions. Word has length 25 [2020-04-17 22:52:44,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:52:44,419 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 1224 transitions. [2020-04-17 22:52:44,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-04-17 22:52:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1224 transitions. [2020-04-17 22:52:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:52:44,420 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:52:44,420 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:52:44,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:44,624 INFO L427 AbstractCegarLoop]: === Iteration 29 === [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]=== [2020-04-17 22:52:44,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:52:44,625 INFO L82 PathProgramCache]: Analyzing trace with hash -709771567, now seen corresponding path program 19 times [2020-04-17 22:52:44,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:52:44,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282477670] [2020-04-17 22:52:44,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:52:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:52:45,442 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-04-17 22:52:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:46,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282477670] [2020-04-17 22:52:46,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126946086] [2020-04-17 22:52:46,271 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:52:46,340 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 96 conjunts are in the unsatisfiable core [2020-04-17 22:52:46,341 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:52:46,352 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 [2020-04-17 22:52:46,352 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:52:46,383 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 22:52:46,396 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:46,396 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 [2020-04-17 22:52:46,396 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:46,407 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:46,408 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:46,408 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-17 22:52:46,918 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:46,919 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:46,920 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:52:46,946 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:46,947 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 [2020-04-17 22:52:46,948 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,007 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 22:52:47,007 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:47,008 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:55 [2020-04-17 22:52:47,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:47,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:47,160 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,161 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,162 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,177 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,180 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 [2020-04-17 22:52:47,180 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,188 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,189 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,203 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,206 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 [2020-04-17 22:52:47,207 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,211 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,212 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,213 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,214 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 [2020-04-17 22:52:47,214 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,234 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:47,235 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:47,235 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-17 22:52:47,442 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,443 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,444 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:47,484 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:47,484 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 [2020-04-17 22:52:47,485 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,543 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 22:52:47,543 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-17 22:52:47,544 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:71, output treesize:49 [2020-04-17 22:52:47,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:47,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:47,655 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 [2020-04-17 22:52:47,656 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,682 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 [2020-04-17 22:52:47,683 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,693 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 [2020-04-17 22:52:47,694 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,755 INFO L619 ElimStorePlain]: treesize reduction 121, result has 27.5 percent of original size [2020-04-17 22:52:47,756 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. [2020-04-17 22:52:47,757 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:212, output treesize:46 [2020-04-17 22:52:47,923 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:47,924 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 [2020-04-17 22:52:47,925 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,932 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:47,933 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:52:47,933 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-04-17 22:52:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:47,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:52:47,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2020-04-17 22:52:47,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264924382] [2020-04-17 22:52:47,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-17 22:52:47,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:52:47,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-17 22:52:47,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2020-04-17 22:52:47,963 INFO L87 Difference]: Start difference. First operand 550 states and 1224 transitions. Second operand 36 states. [2020-04-17 22:52:48,490 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2020-04-17 22:52:48,684 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-04-17 22:52:48,972 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2020-04-17 22:52:49,238 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2020-04-17 22:52:49,466 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 53 [2020-04-17 22:52:50,210 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2020-04-17 22:52:50,585 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-04-17 22:52:50,862 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-04-17 22:52:51,462 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2020-04-17 22:52:51,803 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2020-04-17 22:52:52,300 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2020-04-17 22:52:52,595 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2020-04-17 22:52:53,191 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2020-04-17 22:52:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:52:54,147 INFO L93 Difference]: Finished difference Result 681 states and 1502 transitions. [2020-04-17 22:52:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-17 22:52:54,148 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 25 [2020-04-17 22:52:54,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:52:54,152 INFO L225 Difference]: With dead ends: 681 [2020-04-17 22:52:54,153 INFO L226 Difference]: Without dead ends: 681 [2020-04-17 22:52:54,153 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=496, Invalid=3410, Unknown=0, NotChecked=0, Total=3906 [2020-04-17 22:52:54,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-04-17 22:52:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 501. [2020-04-17 22:52:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-04-17 22:52:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1114 transitions. [2020-04-17 22:52:54,161 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1114 transitions. Word has length 25 [2020-04-17 22:52:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:52:54,162 INFO L479 AbstractCegarLoop]: Abstraction has 501 states and 1114 transitions. [2020-04-17 22:52:54,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-17 22:52:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1114 transitions. [2020-04-17 22:52:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:52:54,163 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:52:54,163 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:52:54,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:54,364 INFO L427 AbstractCegarLoop]: === Iteration 30 === [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]=== [2020-04-17 22:52:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:52:54,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1324684501, now seen corresponding path program 20 times [2020-04-17 22:52:54,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:52:54,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737466171] [2020-04-17 22:52:54,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:52:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:52:54,850 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2020-04-17 22:52:55,077 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2020-04-17 22:52:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:55,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737466171] [2020-04-17 22:52:55,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337012513] [2020-04-17 22:52:55,667 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:52:55,740 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 22:52:55,740 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:52:55,742 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 105 conjunts are in the unsatisfiable core [2020-04-17 22:52:55,743 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:52:55,750 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 [2020-04-17 22:52:55,750 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:52:55,778 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 22:52:55,782 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:55,782 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 [2020-04-17 22:52:55,783 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:55,794 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:55,794 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. [2020-04-17 22:52:55,794 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:52:56,096 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,097 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,098 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:52:56,124 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:56,124 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 [2020-04-17 22:52:56,125 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:56,184 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-17 22:52:56,185 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. [2020-04-17 22:52:56,185 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-17 22:52:56,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:56,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:56,331 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,333 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,335 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,362 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,364 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 [2020-04-17 22:52:56,364 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:56,371 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,372 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,372 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,395 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,396 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 [2020-04-17 22:52:56,397 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:56,402 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,403 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,404 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,405 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 69 treesize of output 56 [2020-04-17 22:52:56,406 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:56,431 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:56,432 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. [2020-04-17 22:52:56,432 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-17 22:52:56,778 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,820 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:56,820 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 [2020-04-17 22:52:56,821 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:56,880 INFO L619 ElimStorePlain]: treesize reduction 72, result has 44.6 percent of original size [2020-04-17 22:52:56,881 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. [2020-04-17 22:52:56,881 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 22:52:56,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:56,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:56,977 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:56,992 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 [2020-04-17 22:52:56,993 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:57,005 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:52:57,017 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 71 treesize of output 60 [2020-04-17 22:52:57,017 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:57,021 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 58 treesize of output 51 [2020-04-17 22:52:57,021 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:57,035 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:57,036 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. [2020-04-17 22:52:57,036 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:219, output treesize:39 [2020-04-17 22:52:57,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:52:57,321 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:57,321 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 44 treesize of output 47 [2020-04-17 22:52:57,322 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:52:57,327 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:52:57,327 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:52:57,327 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-17 22:52:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:52:57,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:52:57,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 37 [2020-04-17 22:52:57,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185770783] [2020-04-17 22:52:57,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-17 22:52:57,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:52:57,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-17 22:52:57,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1354, Unknown=0, NotChecked=0, Total=1482 [2020-04-17 22:52:57,408 INFO L87 Difference]: Start difference. First operand 501 states and 1114 transitions. Second operand 39 states. [2020-04-17 22:52:58,388 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-04-17 22:52:58,637 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2020-04-17 22:52:58,851 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-04-17 22:53:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:03,668 INFO L93 Difference]: Finished difference Result 649 states and 1444 transitions. [2020-04-17 22:53:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-04-17 22:53:03,669 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 25 [2020-04-17 22:53:03,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:03,673 INFO L225 Difference]: With dead ends: 649 [2020-04-17 22:53:03,673 INFO L226 Difference]: Without dead ends: 649 [2020-04-17 22:53:03,674 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=509, Invalid=4461, Unknown=0, NotChecked=0, Total=4970 [2020-04-17 22:53:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-04-17 22:53:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 491. [2020-04-17 22:53:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-04-17 22:53:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 1092 transitions. [2020-04-17 22:53:03,683 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 1092 transitions. Word has length 25 [2020-04-17 22:53:03,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:03,684 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 1092 transitions. [2020-04-17 22:53:03,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-04-17 22:53:03,684 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 1092 transitions. [2020-04-17 22:53:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-17 22:53:03,685 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:03,685 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:03,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:53:03,889 INFO L427 AbstractCegarLoop]: === Iteration 31 === [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]=== [2020-04-17 22:53:03,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:03,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1550608564, now seen corresponding path program 5 times [2020-04-17 22:53:03,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:03,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279640275] [2020-04-17 22:53:03,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:04,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279640275] [2020-04-17 22:53:04,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132210492] [2020-04-17 22:53:04,565 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:53:04,644 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-17 22:53:04,645 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:53:04,646 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 82 conjunts are in the unsatisfiable core [2020-04-17 22:53:04,647 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:53:04,658 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 [2020-04-17 22:53:04,658 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:53:04,687 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 22:53:04,690 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:04,691 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 [2020-04-17 22:53:04,691 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:04,703 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:04,703 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. [2020-04-17 22:53:04,703 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:53:04,935 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:04,962 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:04,962 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 [2020-04-17 22:53:04,963 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:05,007 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-17 22:53:05,008 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. [2020-04-17 22:53:05,008 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:37 [2020-04-17 22:53:05,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:05,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:05,069 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:05,075 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 22:53:05,075 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:05,082 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:05,088 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 22:53:05,089 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:05,093 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 22:53:05,094 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:05,103 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:05,104 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. [2020-04-17 22:53:05,104 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 22:53:05,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:05,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:05,318 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:05,331 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:05,332 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:05,336 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-17 22:53:05,336 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:05,353 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:05,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:05,357 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2020-04-17 22:53:05,357 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:05,359 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2020-04-17 22:53:05,360 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:05,369 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:05,369 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. [2020-04-17 22:53:05,370 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-17 22:53:05,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:05,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:53:05,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2020-04-17 22:53:05,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227872231] [2020-04-17 22:53:05,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-04-17 22:53:05,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:05,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-04-17 22:53:05,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2020-04-17 22:53:05,458 INFO L87 Difference]: Start difference. First operand 491 states and 1092 transitions. Second operand 31 states. [2020-04-17 22:53:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:08,040 INFO L93 Difference]: Finished difference Result 527 states and 1161 transitions. [2020-04-17 22:53:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-17 22:53:08,041 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 25 [2020-04-17 22:53:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:08,044 INFO L225 Difference]: With dead ends: 527 [2020-04-17 22:53:08,044 INFO L226 Difference]: Without dead ends: 510 [2020-04-17 22:53:08,045 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=334, Invalid=1736, Unknown=0, NotChecked=0, Total=2070 [2020-04-17 22:53:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-04-17 22:53:08,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 463. [2020-04-17 22:53:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-04-17 22:53:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1032 transitions. [2020-04-17 22:53:08,051 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1032 transitions. Word has length 25 [2020-04-17 22:53:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:08,052 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 1032 transitions. [2020-04-17 22:53:08,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-04-17 22:53:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1032 transitions. [2020-04-17 22:53:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 22:53:08,052 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:08,053 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:08,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:53:08,255 INFO L427 AbstractCegarLoop]: === Iteration 32 === [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]=== [2020-04-17 22:53:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:08,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2088272730, now seen corresponding path program 21 times [2020-04-17 22:53:08,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:08,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146260524] [2020-04-17 22:53:08,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:08,821 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2020-04-17 22:53:09,105 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2020-04-17 22:53:09,482 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-04-17 22:53:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:10,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146260524] [2020-04-17 22:53:10,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413624459] [2020-04-17 22:53:10,131 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:53:10,243 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-17 22:53:10,243 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:53:10,246 WARN L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 114 conjunts are in the unsatisfiable core [2020-04-17 22:53:10,248 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:53:10,258 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 [2020-04-17 22:53:10,259 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-17 22:53:10,288 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-17 22:53:10,293 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,294 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 [2020-04-17 22:53:10,294 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:10,304 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:10,305 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. [2020-04-17 22:53:10,305 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:53:10,666 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,667 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,668 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:10,714 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:10,715 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 [2020-04-17 22:53:10,716 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:10,780 INFO L619 ElimStorePlain]: treesize reduction 50, result has 54.5 percent of original size [2020-04-17 22:53:10,781 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. [2020-04-17 22:53:10,781 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:60 [2020-04-17 22:53:10,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:10,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:10,957 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,959 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,960 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,978 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,981 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 [2020-04-17 22:53:10,982 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:10,987 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,989 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:10,990 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,007 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,008 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 77 treesize of output 58 [2020-04-17 22:53:11,009 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:11,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,015 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,016 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,017 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 92 treesize of output 67 [2020-04-17 22:53:11,017 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:11,040 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:11,041 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. [2020-04-17 22:53:11,041 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:296, output treesize:58 [2020-04-17 22:53:11,468 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,470 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,471 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,472 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,473 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,473 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:11,515 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:11,515 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 66 treesize of output 125 [2020-04-17 22:53:11,516 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:11,614 INFO L619 ElimStorePlain]: treesize reduction 72, result has 48.2 percent of original size [2020-04-17 22:53:11,615 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. [2020-04-17 22:53:11,616 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:88, output treesize:64 [2020-04-17 22:53:11,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:11,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:11,812 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,815 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,816 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,849 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,851 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 68 [2020-04-17 22:53:11,851 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:11,858 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,859 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,860 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,861 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,863 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,864 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,888 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,891 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 76 [2020-04-17 22:53:11,892 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:11,896 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,897 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,898 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,899 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,900 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,901 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:11,902 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 67 [2020-04-17 22:53:11,903 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:11,923 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:11,924 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. [2020-04-17 22:53:11,924 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:296, output treesize:58 [2020-04-17 22:53:12,210 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:12,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 161 [2020-04-17 22:53:12,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:12,212 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:12,288 INFO L619 ElimStorePlain]: treesize reduction 88, result has 43.6 percent of original size [2020-04-17 22:53:12,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:12,289 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. [2020-04-17 22:53:12,289 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:39 [2020-04-17 22:53:12,513 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:12,514 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 44 treesize of output 47 [2020-04-17 22:53:12,514 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:12,519 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:12,520 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-17 22:53:12,520 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-17 22:53:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:12,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:53:12,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 44 [2020-04-17 22:53:12,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551410632] [2020-04-17 22:53:12,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-04-17 22:53:12,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:12,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-04-17 22:53:12,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2020-04-17 22:53:12,575 INFO L87 Difference]: Start difference. First operand 463 states and 1032 transitions. Second operand 46 states. [2020-04-17 22:53:13,308 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-04-17 22:53:13,908 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-17 22:53:14,142 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-17 22:53:16,450 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-04-17 22:53:17,090 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-04-17 22:53:17,269 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-04-17 22:53:17,941 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-04-17 22:53:19,284 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2020-04-17 22:53:19,900 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-04-17 22:53:20,177 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-04-17 22:53:20,347 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-04-17 22:53:20,942 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-04-17 22:53:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:53:22,497 INFO L93 Difference]: Finished difference Result 659 states and 1443 transitions. [2020-04-17 22:53:22,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-04-17 22:53:22,497 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 30 [2020-04-17 22:53:22,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:53:22,502 INFO L225 Difference]: With dead ends: 659 [2020-04-17 22:53:22,502 INFO L226 Difference]: Without dead ends: 659 [2020-04-17 22:53:22,502 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1170, Invalid=9960, Unknown=0, NotChecked=0, Total=11130 [2020-04-17 22:53:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-04-17 22:53:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 586. [2020-04-17 22:53:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-04-17 22:53:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1299 transitions. [2020-04-17 22:53:22,510 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1299 transitions. Word has length 30 [2020-04-17 22:53:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:53:22,510 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 1299 transitions. [2020-04-17 22:53:22,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-04-17 22:53:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1299 transitions. [2020-04-17 22:53:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-17 22:53:22,511 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:53:22,511 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:53:22,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:53:22,716 INFO L427 AbstractCegarLoop]: === Iteration 33 === [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]=== [2020-04-17 22:53:22,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:53:22,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1686493757, now seen corresponding path program 6 times [2020-04-17 22:53:22,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:53:22,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877464615] [2020-04-17 22:53:22,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:53:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:53:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:23,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877464615] [2020-04-17 22:53:23,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481027751] [2020-04-17 22:53:23,853 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:53:23,938 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-17 22:53:23,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-17 22:53:23,941 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 123 conjunts are in the unsatisfiable core [2020-04-17 22:53:23,943 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-17 22:53:23,950 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 [2020-04-17 22:53:23,951 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:23,972 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-17 22:53:23,976 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:23,977 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 [2020-04-17 22:53:23,977 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:23,988 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:23,988 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. [2020-04-17 22:53:23,989 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-17 22:53:24,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:24,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:24,298 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:24,325 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:24,325 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 [2020-04-17 22:53:24,326 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:24,390 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-17 22:53:24,390 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. [2020-04-17 22:53:24,391 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-17 22:53:24,501 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:24,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:24,509 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:24,525 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:24,527 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:24,528 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2020-04-17 22:53:24,529 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:24,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:24,549 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:24,551 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:24,552 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-04-17 22:53:24,552 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:24,558 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:24,559 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2020-04-17 22:53:24,559 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:24,579 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:24,580 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. [2020-04-17 22:53:24,580 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-17 22:53:24,793 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:24,794 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 77 [2020-04-17 22:53:24,795 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:24,807 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:24,808 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. [2020-04-17 22:53:24,808 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:39 [2020-04-17 22:53:25,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:25,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-17 22:53:25,163 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:25,168 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:25,204 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:25,204 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 114 [2020-04-17 22:53:25,206 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:25,243 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-17 22:53:25,247 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-17 22:53:25,282 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:25,283 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 124 [2020-04-17 22:53:25,284 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:25,315 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-17 22:53:25,315 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 113 [2020-04-17 22:53:25,317 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-17 22:53:25,355 INFO L619 ElimStorePlain]: treesize reduction 50, result has 47.4 percent of original size [2020-04-17 22:53:25,356 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. [2020-04-17 22:53:25,356 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:258, output treesize:45 [2020-04-17 22:53:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:53:25,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-17 22:53:25,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 39 [2020-04-17 22:53:25,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475069221] [2020-04-17 22:53:25,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-04-17 22:53:25,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:53:25,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-04-17 22:53:25,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1386, Unknown=0, NotChecked=0, Total=1560 [2020-04-17 22:53:25,597 INFO L87 Difference]: Start difference. First operand 586 states and 1299 transitions. Second operand 40 states. [2020-04-17 22:53:26,425 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-04-17 22:53:26,908 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2020-04-17 22:53:27,181 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-04-17 22:53:27,647 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-04-17 22:53:28,148 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-04-17 22:53:29,355 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-04-17 22:53:29,835 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-04-17 22:53:30,021 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-04-17 22:53:30,527 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-04-17 22:53:30,967 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-04-17 22:53:31,165 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2020-04-17 22:53:31,428 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-04-17 22:53:31,688 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 Received shutdown request... [2020-04-17 22:53:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-04-17 22:53:31,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-17 22:53:31,910 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-17 22:53:31,916 WARN L228 ceAbstractionStarter]: Timeout [2020-04-17 22:53:31,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:53:31 BasicIcfg [2020-04-17 22:53:31,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:53:31,917 INFO L168 Benchmark]: Toolchain (without parser) took 248136.59 ms. Allocated memory was 146.8 MB in the beginning and 321.4 MB in the end (delta: 174.6 MB). Free memory was 103.0 MB in the beginning and 107.1 MB in the end (delta: -4.1 MB). Peak memory consumption was 170.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:31,917 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 22:53:31,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 925.75 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.1 MB in the beginning and 149.0 MB in the end (delta: -47.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:31,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.33 ms. Allocated memory is still 203.4 MB. Free memory was 149.0 MB in the beginning and 146.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:31,918 INFO L168 Benchmark]: Boogie Preprocessor took 42.19 ms. Allocated memory is still 203.4 MB. Free memory was 146.3 MB in the beginning and 145.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:31,918 INFO L168 Benchmark]: RCFGBuilder took 580.89 ms. Allocated memory is still 203.4 MB. Free memory was 145.0 MB in the beginning and 114.5 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:31,918 INFO L168 Benchmark]: TraceAbstraction took 246466.44 ms. Allocated memory was 203.4 MB in the beginning and 321.4 MB in the end (delta: 118.0 MB). Free memory was 113.8 MB in the beginning and 107.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 124.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:53:31,919 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 925.75 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.1 MB in the beginning and 149.0 MB in the end (delta: -47.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 91.33 ms. Allocated memory is still 203.4 MB. Free memory was 149.0 MB in the beginning and 146.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.19 ms. Allocated memory is still 203.4 MB. Free memory was 146.3 MB in the beginning and 145.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 580.89 ms. Allocated memory is still 203.4 MB. Free memory was 145.0 MB in the beginning and 114.5 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246466.44 ms. Allocated memory was 203.4 MB in the beginning and 321.4 MB in the end (delta: 118.0 MB). Free memory was 113.8 MB in the beginning and 107.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 124.7 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: 0.8s, 0 MoverChecksTotal, 5902 CheckedPairsTotal, 114 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 821]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 821). Cancelled while BasicCegarLoop was constructing difference of abstraction (586states) and FLOYD_HOARE automaton (currently 42 states, 40 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 76 known predicates. - TimeoutResultAtElement [Line: 825]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 825). Cancelled while BasicCegarLoop was constructing difference of abstraction (586states) and FLOYD_HOARE automaton (currently 42 states, 40 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 76 known predicates. - TimeoutResultAtElement [Line: 826]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 826). Cancelled while BasicCegarLoop was constructing difference of abstraction (586states) and FLOYD_HOARE automaton (currently 42 states, 40 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 76 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 246.3s, OverallIterations: 33, TraceHistogramMax: 3, AutomataDifference: 171.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 918 SDtfs, 5686 SDslu, 6751 SDs, 0 SdLazy, 51488 SolverSat, 2071 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1968 GetRequests, 201 SyntacticMatches, 82 SemanticMatches, 1684 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33681 ImplicationChecksByTransitivity, 154.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=586occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 32 MinimizatonAttempts, 3540 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 63.5s InterpolantComputationTime, 1249 NumberOfCodeBlocks, 1249 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 1194 ConstructedInterpolants, 393 QuantifiedInterpolants, 995906 SizeOfPredicates, 882 NumberOfNonLiveVariables, 3485 ConjunctsInSsa, 2014 ConjunctsInUnsatCore, 55 InterpolantComputations, 11 PerfectInterpolantSequences, 40/304 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown