/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 03:05:22,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 03:05:22,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 03:05:22,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 03:05:22,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 03:05:22,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 03:05:22,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 03:05:22,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 03:05:22,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 03:05:22,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 03:05:22,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 03:05:22,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 03:05:22,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 03:05:22,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 03:05:22,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 03:05:22,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 03:05:22,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 03:05:22,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 03:05:22,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 03:05:22,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 03:05:22,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 03:05:22,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 03:05:22,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 03:05:22,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 03:05:22,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 03:05:22,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 03:05:22,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 03:05:22,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 03:05:22,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 03:05:22,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 03:05:22,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 03:05:22,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 03:05:22,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 03:05:22,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 03:05:22,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 03:05:22,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 03:05:22,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 03:05:22,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 03:05:22,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 03:05:22,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 03:05:22,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 03:05:22,162 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-VariableLbe.epf [2020-04-18 03:05:22,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 03:05:22,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 03:05:22,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 03:05:22,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 03:05:22,178 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 03:05:22,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 03:05:22,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 03:05:22,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 03:05:22,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 03:05:22,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 03:05:22,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 03:05:22,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 03:05:22,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 03:05:22,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 03:05:22,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 03:05:22,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 03:05:22,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 03:05:22,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 03:05:22,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 03:05:22,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 03:05:22,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 03:05:22,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:05:22,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 03:05:22,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 03:05:22,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 03:05:22,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 03:05:22,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 03:05:22,183 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 03:05:22,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 03:05:22,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 03:05:22,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 03:05:22,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 03:05:22,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 03:05:22,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 03:05:22,489 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 03:05:22,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2020-04-18 03:05:22,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6660053f6/fb2b504e031b48bb8ab1de94694ad58b/FLAG76a6cf473 [2020-04-18 03:05:23,063 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 03:05:23,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2020-04-18 03:05:23,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6660053f6/fb2b504e031b48bb8ab1de94694ad58b/FLAG76a6cf473 [2020-04-18 03:05:23,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6660053f6/fb2b504e031b48bb8ab1de94694ad58b [2020-04-18 03:05:23,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 03:05:23,410 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 03:05:23,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 03:05:23,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 03:05:23,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 03:05:23,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:05:23" (1/1) ... [2020-04-18 03:05:23,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15684756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:23, skipping insertion in model container [2020-04-18 03:05:23,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:05:23" (1/1) ... [2020-04-18 03:05:23,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 03:05:23,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 03:05:23,645 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-04-18 03:05:24,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:05:24,018 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 03:05:24,045 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-04-18 03:05:24,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:05:24,211 INFO L208 MainTranslator]: Completed translation [2020-04-18 03:05:24,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24 WrapperNode [2020-04-18 03:05:24,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 03:05:24,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 03:05:24,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 03:05:24,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 03:05:24,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 03:05:24,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 03:05:24,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 03:05:24,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 03:05:24,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (1/1) ... [2020-04-18 03:05:24,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 03:05:24,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 03:05:24,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 03:05:24,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 03:05:24,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (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 [2020-04-18 03:05:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2020-04-18 03:05:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2020-04-18 03:05:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 03:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 03:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 03:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 03:05:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 03:05:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 03:05:24,390 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 03:05:24,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 03:05:24,926 INFO L295 CfgBuilder]: Removed 19 assume(true) statements. [2020-04-18 03:05:24,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:05:24 BoogieIcfgContainer [2020-04-18 03:05:24,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 03:05:24,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 03:05:24,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 03:05:24,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 03:05:24,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:05:23" (1/3) ... [2020-04-18 03:05:24,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242e2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:05:24, skipping insertion in model container [2020-04-18 03:05:24,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:24" (2/3) ... [2020-04-18 03:05:24,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242e2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:05:24, skipping insertion in model container [2020-04-18 03:05:24,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:05:24" (3/3) ... [2020-04-18 03:05:24,939 INFO L109 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2020-04-18 03:05:24,949 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 03:05:24,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 03:05:24,957 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-04-18 03:05:24,958 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 03:05:24,988 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,988 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,989 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,989 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,989 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,990 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,990 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,990 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,990 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,991 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,991 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,991 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,992 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,992 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,992 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,992 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,993 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,993 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,993 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,994 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,994 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,994 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,994 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,995 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,995 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,995 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,996 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,996 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,996 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,996 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,996 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,997 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,997 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,997 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,997 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,997 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,998 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,998 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,998 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,998 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,999 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,999 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,999 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:24,999 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,000 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,000 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,000 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,000 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,001 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,001 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,001 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,001 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,001 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,002 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,002 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,002 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,002 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,003 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,003 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,003 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,003 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,004 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,004 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,004 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,004 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,005 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,005 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,005 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,005 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,006 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,006 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,006 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,006 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,007 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,007 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,007 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,007 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,008 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,008 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,008 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,008 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,009 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,009 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,009 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,009 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,010 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,010 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,010 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,010 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,011 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,011 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,011 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,011 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,012 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,012 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,012 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,012 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,012 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,013 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,013 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,013 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,014 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,014 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,014 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,014 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,014 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,015 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,015 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,015 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,016 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,016 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,016 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,016 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,017 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,017 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,017 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,017 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,018 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,018 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,018 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,018 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,018 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,019 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,019 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,020 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,020 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,020 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,020 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,024 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,025 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,025 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,025 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,025 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,026 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,026 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,026 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,026 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,027 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,027 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,027 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,027 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,027 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,028 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,028 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,028 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,028 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,029 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,029 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,029 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,029 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,029 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,030 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,030 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,030 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,030 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,031 WARN L315 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,031 WARN L315 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:05:25,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 03:05:25,073 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:05:25,074 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:05:25,074 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:05:25,074 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:05:25,074 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:05:25,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:05:25,075 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:05:25,075 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:05:25,093 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 128 transitions, 264 flow [2020-04-18 03:05:25,095 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 264 flow [2020-04-18 03:05:25,193 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2020-04-18 03:05:25,193 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-04-18 03:05:25,203 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 127 events. 10/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 245 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2020-04-18 03:05:25,211 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 264 flow [2020-04-18 03:05:25,238 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2020-04-18 03:05:25,238 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-04-18 03:05:25,240 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 127 events. 10/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 245 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2020-04-18 03:05:25,244 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4968 [2020-04-18 03:05:25,245 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:05:27,362 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-04-18 03:05:27,820 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5914 [2020-04-18 03:05:27,821 INFO L214 etLargeBlockEncoding]: Total number of compositions: 112 [2020-04-18 03:05:27,825 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 34 transitions, 76 flow [2020-04-18 03:05:27,839 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 139 states. [2020-04-18 03:05:27,842 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2020-04-18 03:05:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-18 03:05:27,848 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:27,849 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-18 03:05:27,850 INFO L427 AbstractCegarLoop]: === Iteration 1 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:27,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:27,856 INFO L82 PathProgramCache]: Analyzing trace with hash 485339031, now seen corresponding path program 1 times [2020-04-18 03:05:27,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:27,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166476863] [2020-04-18 03:05:27,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:28,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166476863] [2020-04-18 03:05:28,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:28,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 03:05:28,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142758077] [2020-04-18 03:05:28,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 03:05:28,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:28,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 03:05:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 03:05:28,064 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 2 states. [2020-04-18 03:05:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:28,102 INFO L93 Difference]: Finished difference Result 139 states and 298 transitions. [2020-04-18 03:05:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 03:05:28,103 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-04-18 03:05:28,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:28,141 INFO L225 Difference]: With dead ends: 139 [2020-04-18 03:05:28,141 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 03:05:28,142 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 [2020-04-18 03:05:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 03:05:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 03:05:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 03:05:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 277 transitions. [2020-04-18 03:05:28,196 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 277 transitions. Word has length 5 [2020-04-18 03:05:28,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:28,196 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 277 transitions. [2020-04-18 03:05:28,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 03:05:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 277 transitions. [2020-04-18 03:05:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 03:05:28,197 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:28,197 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 03:05:28,198 INFO L427 AbstractCegarLoop]: === Iteration 2 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:28,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:28,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2134363384, now seen corresponding path program 1 times [2020-04-18 03:05:28,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:28,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584770361] [2020-04-18 03:05:28,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:28,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584770361] [2020-04-18 03:05:28,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:28,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:05:28,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019307308] [2020-04-18 03:05:28,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:05:28,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:28,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:05:28,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:05:28,298 INFO L87 Difference]: Start difference. First operand 128 states and 277 transitions. Second operand 3 states. [2020-04-18 03:05:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:28,328 INFO L93 Difference]: Finished difference Result 200 states and 438 transitions. [2020-04-18 03:05:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:05:28,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 03:05:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:28,334 INFO L225 Difference]: With dead ends: 200 [2020-04-18 03:05:28,335 INFO L226 Difference]: Without dead ends: 200 [2020-04-18 03:05:28,336 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 [2020-04-18 03:05:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-04-18 03:05:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 155. [2020-04-18 03:05:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-04-18 03:05:28,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 343 transitions. [2020-04-18 03:05:28,361 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 343 transitions. Word has length 6 [2020-04-18 03:05:28,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:28,361 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 343 transitions. [2020-04-18 03:05:28,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:05:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 343 transitions. [2020-04-18 03:05:28,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 03:05:28,362 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:28,362 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:28,363 INFO L427 AbstractCegarLoop]: === Iteration 3 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:28,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:28,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1264596255, now seen corresponding path program 1 times [2020-04-18 03:05:28,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:28,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964752216] [2020-04-18 03:05:28,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:28,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964752216] [2020-04-18 03:05:28,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:28,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 03:05:28,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146707180] [2020-04-18 03:05:28,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:05:28,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:28,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:05:28,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:05:28,582 INFO L87 Difference]: Start difference. First operand 155 states and 343 transitions. Second operand 7 states. [2020-04-18 03:05:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:28,951 INFO L93 Difference]: Finished difference Result 181 states and 391 transitions. [2020-04-18 03:05:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 03:05:28,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 03:05:28,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:28,956 INFO L225 Difference]: With dead ends: 181 [2020-04-18 03:05:28,956 INFO L226 Difference]: Without dead ends: 162 [2020-04-18 03:05:28,956 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 03:05:28,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-04-18 03:05:28,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-04-18 03:05:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 03:05:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 359 transitions. [2020-04-18 03:05:28,969 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 359 transitions. Word has length 10 [2020-04-18 03:05:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:28,969 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 359 transitions. [2020-04-18 03:05:28,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:05:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 359 transitions. [2020-04-18 03:05:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 03:05:28,970 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:28,970 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:28,971 INFO L427 AbstractCegarLoop]: === Iteration 4 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:28,971 INFO L82 PathProgramCache]: Analyzing trace with hash -328941052, now seen corresponding path program 1 times [2020-04-18 03:05:28,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:28,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014493965] [2020-04-18 03:05:28,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:29,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014493965] [2020-04-18 03:05:29,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:29,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-04-18 03:05:29,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465493587] [2020-04-18 03:05:29,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:05:29,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:29,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:05:29,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:05:29,600 INFO L87 Difference]: Start difference. First operand 162 states and 359 transitions. Second operand 12 states. [2020-04-18 03:05:30,280 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-04-18 03:05:30,745 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-04-18 03:05:30,880 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-04-18 03:05:31,121 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-04-18 03:05:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:31,606 INFO L93 Difference]: Finished difference Result 205 states and 441 transitions. [2020-04-18 03:05:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 03:05:31,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-04-18 03:05:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:31,609 INFO L225 Difference]: With dead ends: 205 [2020-04-18 03:05:31,609 INFO L226 Difference]: Without dead ends: 195 [2020-04-18 03:05:31,610 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-04-18 03:05:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-04-18 03:05:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 183. [2020-04-18 03:05:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-04-18 03:05:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 401 transitions. [2020-04-18 03:05:31,624 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 401 transitions. Word has length 16 [2020-04-18 03:05:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:31,625 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 401 transitions. [2020-04-18 03:05:31,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:05:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 401 transitions. [2020-04-18 03:05:31,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 03:05:31,626 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:31,626 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:31,627 INFO L427 AbstractCegarLoop]: === Iteration 5 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:31,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1380096900, now seen corresponding path program 2 times [2020-04-18 03:05:31,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:31,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093550172] [2020-04-18 03:05:31,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:32,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093550172] [2020-04-18 03:05:32,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:32,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 03:05:32,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412629876] [2020-04-18 03:05:32,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 03:05:32,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:32,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 03:05:32,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-04-18 03:05:32,022 INFO L87 Difference]: Start difference. First operand 183 states and 401 transitions. Second operand 13 states. [2020-04-18 03:05:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:33,919 INFO L93 Difference]: Finished difference Result 218 states and 464 transitions. [2020-04-18 03:05:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 03:05:33,921 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-04-18 03:05:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:33,923 INFO L225 Difference]: With dead ends: 218 [2020-04-18 03:05:33,923 INFO L226 Difference]: Without dead ends: 208 [2020-04-18 03:05:33,924 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2020-04-18 03:05:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-04-18 03:05:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 185. [2020-04-18 03:05:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-04-18 03:05:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 401 transitions. [2020-04-18 03:05:33,935 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 401 transitions. Word has length 16 [2020-04-18 03:05:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:33,936 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 401 transitions. [2020-04-18 03:05:33,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 03:05:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 401 transitions. [2020-04-18 03:05:33,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 03:05:33,937 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:33,937 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:33,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:33,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:33,938 INFO L82 PathProgramCache]: Analyzing trace with hash 391036352, now seen corresponding path program 3 times [2020-04-18 03:05:33,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:33,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702654949] [2020-04-18 03:05:33,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:34,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702654949] [2020-04-18 03:05:34,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:34,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 03:05:34,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966607787] [2020-04-18 03:05:34,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 03:05:34,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 03:05:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-04-18 03:05:34,306 INFO L87 Difference]: Start difference. First operand 185 states and 401 transitions. Second operand 13 states. [2020-04-18 03:05:35,643 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-04-18 03:05:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:36,381 INFO L93 Difference]: Finished difference Result 216 states and 456 transitions. [2020-04-18 03:05:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 03:05:36,384 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-04-18 03:05:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:36,385 INFO L225 Difference]: With dead ends: 216 [2020-04-18 03:05:36,386 INFO L226 Difference]: Without dead ends: 206 [2020-04-18 03:05:36,386 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=294, Invalid=698, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:05:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-04-18 03:05:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 185. [2020-04-18 03:05:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-04-18 03:05:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 401 transitions. [2020-04-18 03:05:36,396 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 401 transitions. Word has length 16 [2020-04-18 03:05:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:36,397 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 401 transitions. [2020-04-18 03:05:36,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 03:05:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 401 transitions. [2020-04-18 03:05:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 03:05:36,398 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:36,398 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:36,399 INFO L427 AbstractCegarLoop]: === Iteration 7 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:36,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1177563524, now seen corresponding path program 4 times [2020-04-18 03:05:36,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:36,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177258930] [2020-04-18 03:05:36,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:36,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177258930] [2020-04-18 03:05:36,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:36,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-04-18 03:05:36,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727355910] [2020-04-18 03:05:36,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:05:36,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:36,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:05:36,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:05:36,852 INFO L87 Difference]: Start difference. First operand 185 states and 401 transitions. Second operand 12 states. [2020-04-18 03:05:37,742 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-04-18 03:05:38,069 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-04-18 03:05:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:38,475 INFO L93 Difference]: Finished difference Result 201 states and 426 transitions. [2020-04-18 03:05:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 03:05:38,476 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-04-18 03:05:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:38,478 INFO L225 Difference]: With dead ends: 201 [2020-04-18 03:05:38,478 INFO L226 Difference]: Without dead ends: 191 [2020-04-18 03:05:38,479 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-04-18 03:05:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-04-18 03:05:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 170. [2020-04-18 03:05:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 03:05:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 371 transitions. [2020-04-18 03:05:38,486 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 371 transitions. Word has length 16 [2020-04-18 03:05:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:38,487 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 371 transitions. [2020-04-18 03:05:38,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:05:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 371 transitions. [2020-04-18 03:05:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 03:05:38,489 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:38,489 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:38,489 INFO L427 AbstractCegarLoop]: === Iteration 8 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:38,489 INFO L82 PathProgramCache]: Analyzing trace with hash -960067854, now seen corresponding path program 1 times [2020-04-18 03:05:38,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:38,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278986866] [2020-04-18 03:05:38,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:39,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278986866] [2020-04-18 03:05:39,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:39,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 03:05:39,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093255465] [2020-04-18 03:05:39,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:05:39,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:39,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:05:39,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:05:39,355 INFO L87 Difference]: Start difference. First operand 170 states and 371 transitions. Second operand 16 states. [2020-04-18 03:05:40,351 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-04-18 03:05:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:41,050 INFO L93 Difference]: Finished difference Result 261 states and 568 transitions. [2020-04-18 03:05:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 03:05:41,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-18 03:05:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:41,053 INFO L225 Difference]: With dead ends: 261 [2020-04-18 03:05:41,053 INFO L226 Difference]: Without dead ends: 261 [2020-04-18 03:05:41,054 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-04-18 03:05:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-04-18 03:05:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 237. [2020-04-18 03:05:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-04-18 03:05:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 518 transitions. [2020-04-18 03:05:41,062 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 518 transitions. Word has length 18 [2020-04-18 03:05:41,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:41,064 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 518 transitions. [2020-04-18 03:05:41,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:05:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 518 transitions. [2020-04-18 03:05:41,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 03:05:41,066 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:41,066 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:41,066 INFO L427 AbstractCegarLoop]: === Iteration 9 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:41,066 INFO L82 PathProgramCache]: Analyzing trace with hash 747896946, now seen corresponding path program 2 times [2020-04-18 03:05:41,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:41,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780758234] [2020-04-18 03:05:41,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:41,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780758234] [2020-04-18 03:05:41,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:41,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-18 03:05:41,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043774911] [2020-04-18 03:05:41,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 03:05:41,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:41,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 03:05:41,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:05:41,922 INFO L87 Difference]: Start difference. First operand 237 states and 518 transitions. Second operand 15 states. [2020-04-18 03:05:42,610 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-04-18 03:05:42,788 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2020-04-18 03:05:42,959 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-04-18 03:05:43,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:43,752 INFO L93 Difference]: Finished difference Result 307 states and 673 transitions. [2020-04-18 03:05:43,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 03:05:43,755 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-04-18 03:05:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:43,758 INFO L225 Difference]: With dead ends: 307 [2020-04-18 03:05:43,758 INFO L226 Difference]: Without dead ends: 307 [2020-04-18 03:05:43,759 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-04-18 03:05:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-04-18 03:05:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 237. [2020-04-18 03:05:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-04-18 03:05:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 518 transitions. [2020-04-18 03:05:43,767 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 518 transitions. Word has length 18 [2020-04-18 03:05:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:43,768 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 518 transitions. [2020-04-18 03:05:43,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 03:05:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 518 transitions. [2020-04-18 03:05:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 03:05:43,769 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:43,769 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:43,769 INFO L427 AbstractCegarLoop]: === Iteration 10 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:43,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:43,770 INFO L82 PathProgramCache]: Analyzing trace with hash -603037424, now seen corresponding path program 3 times [2020-04-18 03:05:43,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:43,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126719204] [2020-04-18 03:05:43,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:44,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126719204] [2020-04-18 03:05:44,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:44,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-18 03:05:44,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842866977] [2020-04-18 03:05:44,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 03:05:44,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:44,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 03:05:44,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:05:44,568 INFO L87 Difference]: Start difference. First operand 237 states and 518 transitions. Second operand 15 states. [2020-04-18 03:05:45,365 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-04-18 03:05:45,630 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-04-18 03:05:45,773 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-04-18 03:05:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:46,599 INFO L93 Difference]: Finished difference Result 304 states and 667 transitions. [2020-04-18 03:05:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 03:05:46,600 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-04-18 03:05:46,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:46,603 INFO L225 Difference]: With dead ends: 304 [2020-04-18 03:05:46,603 INFO L226 Difference]: Without dead ends: 304 [2020-04-18 03:05:46,604 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-04-18 03:05:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-18 03:05:46,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 237. [2020-04-18 03:05:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-04-18 03:05:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 518 transitions. [2020-04-18 03:05:46,613 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 518 transitions. Word has length 18 [2020-04-18 03:05:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:46,613 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 518 transitions. [2020-04-18 03:05:46,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 03:05:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 518 transitions. [2020-04-18 03:05:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 03:05:46,614 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:46,614 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:46,615 INFO L427 AbstractCegarLoop]: === Iteration 11 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:05:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:46,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1345703600, now seen corresponding path program 4 times [2020-04-18 03:05:46,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:46,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322636022] [2020-04-18 03:05:46,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:47,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322636022] [2020-04-18 03:05:47,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:47,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-18 03:05:47,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124112877] [2020-04-18 03:05:47,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 03:05:47,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:47,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 03:05:47,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:05:47,367 INFO L87 Difference]: Start difference. First operand 237 states and 518 transitions. Second operand 15 states. [2020-04-18 03:05:48,248 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-04-18 03:05:48,404 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-04-18 03:05:48,586 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-04-18 03:05:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:49,563 INFO L93 Difference]: Finished difference Result 419 states and 934 transitions. [2020-04-18 03:05:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 03:05:49,564 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-04-18 03:05:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:49,566 INFO L225 Difference]: With dead ends: 419 [2020-04-18 03:05:49,566 INFO L226 Difference]: Without dead ends: 419 [2020-04-18 03:05:49,566 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-04-18 03:05:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-04-18 03:05:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 243. [2020-04-18 03:05:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-04-18 03:05:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 531 transitions. [2020-04-18 03:05:49,575 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 531 transitions. Word has length 18 [2020-04-18 03:05:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:49,575 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 531 transitions. [2020-04-18 03:05:49,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 03:05:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 531 transitions. [2020-04-18 03:05:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 03:05:49,576 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:49,577 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:49,577 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]=== [2020-04-18 03:05:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash -551517266, now seen corresponding path program 5 times [2020-04-18 03:05:49,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:49,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999891466] [2020-04-18 03:05:49,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:50,048 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-04-18 03:05:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:50,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999891466] [2020-04-18 03:05:50,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:50,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-18 03:05:50,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485339977] [2020-04-18 03:05:50,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 03:05:50,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:50,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 03:05:50,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:05:50,488 INFO L87 Difference]: Start difference. First operand 243 states and 531 transitions. Second operand 15 states. [2020-04-18 03:05:51,294 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2020-04-18 03:05:51,492 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-04-18 03:05:51,679 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-04-18 03:05:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:52,484 INFO L93 Difference]: Finished difference Result 322 states and 704 transitions. [2020-04-18 03:05:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 03:05:52,484 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-04-18 03:05:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:52,487 INFO L225 Difference]: With dead ends: 322 [2020-04-18 03:05:52,488 INFO L226 Difference]: Without dead ends: 322 [2020-04-18 03:05:52,488 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-04-18 03:05:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-04-18 03:05:52,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 243. [2020-04-18 03:05:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-04-18 03:05:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 531 transitions. [2020-04-18 03:05:52,496 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 531 transitions. Word has length 18 [2020-04-18 03:05:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:52,497 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 531 transitions. [2020-04-18 03:05:52,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 03:05:52,497 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 531 transitions. [2020-04-18 03:05:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 03:05:52,498 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:52,498 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:52,498 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]=== [2020-04-18 03:05:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:52,498 INFO L82 PathProgramCache]: Analyzing trace with hash -442477206, now seen corresponding path program 6 times [2020-04-18 03:05:52,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:52,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238448327] [2020-04-18 03:05:52,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:53,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238448327] [2020-04-18 03:05:53,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:05:53,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 03:05:53,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174582260] [2020-04-18 03:05:53,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:05:53,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:53,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:05:53,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:05:53,219 INFO L87 Difference]: Start difference. First operand 243 states and 531 transitions. Second operand 16 states. [2020-04-18 03:05:54,120 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-04-18 03:05:54,279 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-04-18 03:05:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:54,953 INFO L93 Difference]: Finished difference Result 301 states and 662 transitions. [2020-04-18 03:05:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 03:05:54,954 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-04-18 03:05:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:54,957 INFO L225 Difference]: With dead ends: 301 [2020-04-18 03:05:54,957 INFO L226 Difference]: Without dead ends: 301 [2020-04-18 03:05:54,960 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2020-04-18 03:05:54,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-04-18 03:05:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 222. [2020-04-18 03:05:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-04-18 03:05:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 489 transitions. [2020-04-18 03:05:54,971 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 489 transitions. Word has length 18 [2020-04-18 03:05:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:54,971 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 489 transitions. [2020-04-18 03:05:54,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:05:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 489 transitions. [2020-04-18 03:05:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:05:54,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:54,973 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:54,973 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]=== [2020-04-18 03:05:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:54,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1193789261, now seen corresponding path program 1 times [2020-04-18 03:05:54,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:54,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798255123] [2020-04-18 03:05:54,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:55,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798255123] [2020-04-18 03:05:55,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602227852] [2020-04-18 03:05:55,022 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 [2020-04-18 03:05:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:55,134 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2020-04-18 03:05:55,143 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:05:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:55,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:05:55,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-04-18 03:05:55,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62458161] [2020-04-18 03:05:55,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 03:05:55,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:55,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 03:05:55,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:05:55,177 INFO L87 Difference]: Start difference. First operand 222 states and 489 transitions. Second operand 4 states. [2020-04-18 03:05:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:05:55,216 INFO L93 Difference]: Finished difference Result 326 states and 718 transitions. [2020-04-18 03:05:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 03:05:55,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-04-18 03:05:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:05:55,222 INFO L225 Difference]: With dead ends: 326 [2020-04-18 03:05:55,222 INFO L226 Difference]: Without dead ends: 326 [2020-04-18 03:05:55,222 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:05:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-04-18 03:05:55,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278. [2020-04-18 03:05:55,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-04-18 03:05:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 624 transitions. [2020-04-18 03:05:55,236 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 624 transitions. Word has length 21 [2020-04-18 03:05:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:05:55,237 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 624 transitions. [2020-04-18 03:05:55,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 03:05:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 624 transitions. [2020-04-18 03:05:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:05:55,240 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:05:55,241 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:05:55,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:05:55,448 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]=== [2020-04-18 03:05:55,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:05:55,448 INFO L82 PathProgramCache]: Analyzing trace with hash 554824476, now seen corresponding path program 7 times [2020-04-18 03:05:55,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:05:55,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675829332] [2020-04-18 03:05:55,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:05:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:56,129 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-04-18 03:05:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:56,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675829332] [2020-04-18 03:05:56,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529176546] [2020-04-18 03:05:56,887 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 [2020-04-18 03:05:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:05:56,970 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 94 conjunts are in the unsatisfiable core [2020-04-18 03:05:56,973 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:05:57,037 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 03:05:57,038 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:05:57,063 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 03:05:57,068 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:57,072 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:05:57,073 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:05:57,082 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:05:57,083 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. [2020-04-18 03:05:57,084 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-18 03:05:57,711 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:57,712 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:57,713 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:05:57,739 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:05:57,740 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:05:57,743 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:05:57,818 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-18 03:05:57,819 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. [2020-04-18 03:05:57,819 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:55 [2020-04-18 03:05:57,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:05:57,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:05:58,000 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,003 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,005 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,018 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,022 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 03:05:58,024 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:05:58,042 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,046 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,047 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,068 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,072 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 03:05:58,073 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:05:58,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,081 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,082 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:05:58,084 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 [2020-04-18 03:05:58,085 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:05:58,105 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:05:58,106 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. [2020-04-18 03:05:58,107 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-18 03:05:58,385 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:05:58,385 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 103 [2020-04-18 03:05:58,386 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:05:58,400 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:05:58,401 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. [2020-04-18 03:05:58,401 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:39 [2020-04-18 03:05:58,579 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:05:58,580 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 [2020-04-18 03:05:58,582 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:05:58,589 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:05:58,589 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:05:58,590 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:7 [2020-04-18 03:05:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:05:58,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:05:58,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 34 [2020-04-18 03:05:58,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671804829] [2020-04-18 03:05:58,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-18 03:05:58,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:05:58,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-18 03:05:58,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 03:05:58,695 INFO L87 Difference]: Start difference. First operand 278 states and 624 transitions. Second operand 36 states. [2020-04-18 03:05:59,441 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-04-18 03:05:59,823 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2020-04-18 03:06:00,112 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2020-04-18 03:06:00,393 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2020-04-18 03:06:01,664 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-04-18 03:06:02,068 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2020-04-18 03:06:02,783 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-04-18 03:06:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:06:03,933 INFO L93 Difference]: Finished difference Result 457 states and 1009 transitions. [2020-04-18 03:06:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:06:03,933 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-04-18 03:06:03,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:06:03,938 INFO L225 Difference]: With dead ends: 457 [2020-04-18 03:06:03,938 INFO L226 Difference]: Without dead ends: 457 [2020-04-18 03:06:03,939 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=434, Invalid=2872, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 03:06:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-04-18 03:06:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 340. [2020-04-18 03:06:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-04-18 03:06:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 762 transitions. [2020-04-18 03:06:03,950 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 762 transitions. Word has length 23 [2020-04-18 03:06:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:06:03,951 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 762 transitions. [2020-04-18 03:06:03,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-18 03:06:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 762 transitions. [2020-04-18 03:06:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:06:03,952 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:03,952 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:06:04,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:06:04,156 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]=== [2020-04-18 03:06:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:04,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1472960100, now seen corresponding path program 8 times [2020-04-18 03:06:04,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:04,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651972861] [2020-04-18 03:06:04,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:06:04,790 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-04-18 03:06:04,968 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-04-18 03:06:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:05,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651972861] [2020-04-18 03:06:05,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053606944] [2020-04-18 03:06:05,774 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:06:05,856 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:06:05,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:06:05,859 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-18 03:06:05,862 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:06:05,874 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 03:06:05,875 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:05,896 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 03:06:05,901 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:05,904 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 [2020-04-18 03:06:05,905 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:05,914 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:05,915 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:05,915 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:06:06,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,452 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,453 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:06,474 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:06,475 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:06:06,476 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:06,536 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-18 03:06:06,537 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:06,538 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-04-18 03:06:06,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:06,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:06,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,754 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,756 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 03:06:06,757 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:06,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,767 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,782 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 03:06:06,783 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:06,789 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,790 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,791 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:06,792 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 [2020-04-18 03:06:06,793 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:06,815 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:06,816 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:06,816 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-18 03:06:07,135 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:07,136 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-18 03:06:07,137 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:07,205 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-18 03:06:07,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:07,206 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:07,207 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-18 03:06:07,362 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:07,362 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-18 03:06:07,363 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:07,368 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:07,369 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:06:07,369 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-18 03:06:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:07,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:06:07,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 34 [2020-04-18 03:06:07,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102681909] [2020-04-18 03:06:07,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-18 03:06:07,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:06:07,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-18 03:06:07,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 03:06:07,457 INFO L87 Difference]: Start difference. First operand 340 states and 762 transitions. Second operand 36 states. [2020-04-18 03:06:08,529 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 52 [2020-04-18 03:06:08,792 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2020-04-18 03:06:09,075 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 56 [2020-04-18 03:06:09,911 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-04-18 03:06:10,264 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-04-18 03:06:10,658 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-04-18 03:06:11,081 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-04-18 03:06:11,362 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-04-18 03:06:11,554 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-04-18 03:06:11,864 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-04-18 03:06:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:06:13,088 INFO L93 Difference]: Finished difference Result 437 states and 967 transitions. [2020-04-18 03:06:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 03:06:13,094 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-04-18 03:06:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:06:13,096 INFO L225 Difference]: With dead ends: 437 [2020-04-18 03:06:13,097 INFO L226 Difference]: Without dead ends: 437 [2020-04-18 03:06:13,098 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=485, Invalid=3297, Unknown=0, NotChecked=0, Total=3782 [2020-04-18 03:06:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-04-18 03:06:13,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 386. [2020-04-18 03:06:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-04-18 03:06:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 861 transitions. [2020-04-18 03:06:13,107 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 861 transitions. Word has length 23 [2020-04-18 03:06:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:06:13,108 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 861 transitions. [2020-04-18 03:06:13,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-18 03:06:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 861 transitions. [2020-04-18 03:06:13,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:06:13,109 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:13,109 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:06:13,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:06:13,314 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]=== [2020-04-18 03:06:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:13,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1943255998, now seen corresponding path program 9 times [2020-04-18 03:06:13,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:13,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638625475] [2020-04-18 03:06:13,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:06:13,856 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2020-04-18 03:06:14,216 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-04-18 03:06:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:14,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638625475] [2020-04-18 03:06:14,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275500812] [2020-04-18 03:06:14,736 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 [2020-04-18 03:06:14,815 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:06:14,815 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:06:14,818 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 92 conjunts are in the unsatisfiable core [2020-04-18 03:06:14,820 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:06:14,844 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:06:14,844 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:06:14,884 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:06:14,892 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:14,893 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:06:14,894 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:14,908 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:14,909 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:14,909 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:06:15,334 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,334 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:15,376 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:15,376 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:06:15,377 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:15,429 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-18 03:06:15,430 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:15,430 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-18 03:06:15,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:15,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:15,747 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,772 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:15,774 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,776 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 [2020-04-18 03:06:15,776 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:15,787 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,788 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,789 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,811 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:15,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,815 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 [2020-04-18 03:06:15,815 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:15,821 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,822 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:15,825 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 [2020-04-18 03:06:15,825 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:15,845 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:15,846 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:15,847 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:269, output treesize:49 [2020-04-18 03:06:16,116 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:16,117 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 103 [2020-04-18 03:06:16,119 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:16,136 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:16,137 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:16,138 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:39 [2020-04-18 03:06:16,304 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:16,304 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 [2020-04-18 03:06:16,305 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:16,310 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:16,311 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:06:16,311 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-18 03:06:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:16,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:06:16,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 34 [2020-04-18 03:06:16,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274431278] [2020-04-18 03:06:16,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-18 03:06:16,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:06:16,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-18 03:06:16,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 03:06:16,392 INFO L87 Difference]: Start difference. First operand 386 states and 861 transitions. Second operand 36 states. [2020-04-18 03:06:17,405 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-04-18 03:06:17,589 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-04-18 03:06:17,862 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 59 [2020-04-18 03:06:18,272 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 56 [2020-04-18 03:06:18,474 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-04-18 03:06:19,324 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-04-18 03:06:19,715 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-04-18 03:06:20,067 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2020-04-18 03:06:20,557 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-04-18 03:06:20,898 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-04-18 03:06:21,077 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-04-18 03:06:21,321 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-04-18 03:06:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:06:21,961 INFO L93 Difference]: Finished difference Result 568 states and 1262 transitions. [2020-04-18 03:06:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 03:06:21,962 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-04-18 03:06:21,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:06:21,966 INFO L225 Difference]: With dead ends: 568 [2020-04-18 03:06:21,966 INFO L226 Difference]: Without dead ends: 568 [2020-04-18 03:06:21,967 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=483, Invalid=3177, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 03:06:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-04-18 03:06:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 356. [2020-04-18 03:06:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-04-18 03:06:21,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 795 transitions. [2020-04-18 03:06:21,976 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 795 transitions. Word has length 23 [2020-04-18 03:06:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:06:21,977 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 795 transitions. [2020-04-18 03:06:21,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-18 03:06:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 795 transitions. [2020-04-18 03:06:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:06:21,978 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:21,978 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:06:22,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:06:22,181 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]=== [2020-04-18 03:06:22,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:22,182 INFO L82 PathProgramCache]: Analyzing trace with hash 439358334, now seen corresponding path program 10 times [2020-04-18 03:06:22,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:22,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310432796] [2020-04-18 03:06:22,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:06:22,697 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-04-18 03:06:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:23,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310432796] [2020-04-18 03:06:23,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546604358] [2020-04-18 03:06:23,497 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 [2020-04-18 03:06:23,554 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:06:23,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:06:23,556 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 99 conjunts are in the unsatisfiable core [2020-04-18 03:06:23,558 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:06:23,571 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 03:06:23,571 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:23,593 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 03:06:23,602 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:23,603 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:06:23,603 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:23,612 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:23,613 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:23,613 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:06:24,040 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,040 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:24,064 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:24,065 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:06:24,066 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:24,118 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-18 03:06:24,119 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:24,119 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-18 03:06:24,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:24,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:24,327 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,329 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,331 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,351 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:24,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,361 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 [2020-04-18 03:06:24,362 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:24,370 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,372 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,374 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,390 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:24,392 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,401 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 [2020-04-18 03:06:24,402 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:24,410 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,412 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,413 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:24,415 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 [2020-04-18 03:06:24,416 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:24,437 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:24,438 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:24,438 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:260, output treesize:46 [2020-04-18 03:06:25,012 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:25,012 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-18 03:06:25,013 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:25,076 INFO L619 ElimStorePlain]: treesize reduction 64, result has 48.8 percent of original size [2020-04-18 03:06:25,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:25,077 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:25,078 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-04-18 03:06:25,224 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:25,225 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-18 03:06:25,226 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:25,231 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:25,231 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:06:25,232 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-18 03:06:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:25,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:06:25,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 34 [2020-04-18 03:06:25,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864741177] [2020-04-18 03:06:25,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-04-18 03:06:25,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:06:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-04-18 03:06:25,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 03:06:25,314 INFO L87 Difference]: Start difference. First operand 356 states and 795 transitions. Second operand 36 states. [2020-04-18 03:06:26,393 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-04-18 03:06:26,579 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2020-04-18 03:06:26,819 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2020-04-18 03:06:27,009 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-04-18 03:06:27,260 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-04-18 03:06:28,243 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-04-18 03:06:29,038 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-04-18 03:06:29,237 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-04-18 03:06:29,493 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-04-18 03:06:29,656 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-04-18 03:06:30,169 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2020-04-18 03:06:30,367 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2020-04-18 03:06:30,889 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2020-04-18 03:06:31,076 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-04-18 03:06:31,457 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-04-18 03:06:31,668 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2020-04-18 03:06:32,132 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2020-04-18 03:06:32,702 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-04-18 03:06:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:06:33,424 INFO L93 Difference]: Finished difference Result 565 states and 1256 transitions. [2020-04-18 03:06:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-04-18 03:06:33,425 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-04-18 03:06:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:06:33,429 INFO L225 Difference]: With dead ends: 565 [2020-04-18 03:06:33,429 INFO L226 Difference]: Without dead ends: 565 [2020-04-18 03:06:33,430 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=707, Invalid=4549, Unknown=0, NotChecked=0, Total=5256 [2020-04-18 03:06:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-04-18 03:06:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 381. [2020-04-18 03:06:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-04-18 03:06:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 845 transitions. [2020-04-18 03:06:33,439 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 845 transitions. Word has length 23 [2020-04-18 03:06:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:06:33,439 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 845 transitions. [2020-04-18 03:06:33,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-04-18 03:06:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 845 transitions. [2020-04-18 03:06:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:06:33,440 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:06:33,440 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:06:33,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:06:33,644 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]=== [2020-04-18 03:06:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:06:33,645 INFO L82 PathProgramCache]: Analyzing trace with hash -2146571010, now seen corresponding path program 11 times [2020-04-18 03:06:33,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:06:33,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692319899] [2020-04-18 03:06:33,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:06:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:06:34,605 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-04-18 03:06:34,779 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-04-18 03:06:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:35,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692319899] [2020-04-18 03:06:35,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234552167] [2020-04-18 03:06:35,030 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 [2020-04-18 03:06:35,106 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:06:35,106 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:06:35,108 WARN L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 103 conjunts are in the unsatisfiable core [2020-04-18 03:06:35,110 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:06:35,120 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2020-04-18 03:06:35,120 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:35,141 INFO L619 ElimStorePlain]: treesize reduction 12, result has 78.9 percent of original size [2020-04-18 03:06:35,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,148 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:06:35,149 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:35,160 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:35,161 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. [2020-04-18 03:06:35,161 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-18 03:06:35,414 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,415 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:35,448 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:35,449 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:06:35,450 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:35,505 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-18 03:06:35,505 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. [2020-04-18 03:06:35,506 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:52 [2020-04-18 03:06:35,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:35,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:35,650 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,652 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,655 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:35,678 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 [2020-04-18 03:06:35,679 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:35,704 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,705 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,706 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,710 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:06:35,731 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 [2020-04-18 03:06:35,732 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:35,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:06:35,751 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 [2020-04-18 03:06:35,752 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:35,828 INFO L619 ElimStorePlain]: treesize reduction 135, result has 28.2 percent of original size [2020-04-18 03:06:35,829 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:35,829 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:245, output treesize:53 [2020-04-18 03:06:36,180 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:36,181 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 55 treesize of output 131 [2020-04-18 03:06:36,182 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:36,256 INFO L619 ElimStorePlain]: treesize reduction 56, result has 58.8 percent of original size [2020-04-18 03:06:36,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:36,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:36,267 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:06:36,267 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:55 [2020-04-18 03:06:36,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:36,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:36,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:06:36,801 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:36,802 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 49 treesize of output 48 [2020-04-18 03:06:36,803 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:06:36,808 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:06:36,809 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:06:36,809 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:7 [2020-04-18 03:06:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:06:36,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:06:36,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2020-04-18 03:06:36,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471378047] [2020-04-18 03:06:36,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-18 03:06:36,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:06:36,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-18 03:06:36,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1271, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 03:06:36,883 INFO L87 Difference]: Start difference. First operand 381 states and 845 transitions. Second operand 38 states. [2020-04-18 03:06:37,590 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-04-18 03:06:37,939 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-04-18 03:06:38,185 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-04-18 03:06:38,396 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-04-18 03:06:38,800 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-04-18 03:06:39,349 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-04-18 03:06:39,616 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2020-04-18 03:06:39,813 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2020-04-18 03:06:39,986 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-04-18 03:06:40,282 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2020-04-18 03:06:40,491 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 55 [2020-04-18 03:06:40,986 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2020-04-18 03:06:41,228 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2020-04-18 03:06:41,489 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 61 [2020-04-18 03:06:41,795 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2020-04-18 03:06:42,293 WARN L192 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2020-04-18 03:06:42,808 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 64 [2020-04-18 03:06:43,106 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2020-04-18 03:06:43,495 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2020-04-18 03:06:43,924 WARN L192 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2020-04-18 03:06:44,356 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-04-18 03:06:44,601 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2020-04-18 03:06:44,896 WARN L192 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-04-18 03:06:45,233 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2020-04-18 03:06:45,568 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2020-04-18 03:06:46,173 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2020-04-18 03:06:46,522 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 87 [2020-04-18 03:06:46,720 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-04-18 03:06:47,063 WARN L192 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2020-04-18 03:06:47,345 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2020-04-18 03:06:47,827 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2020-04-18 03:06:48,163 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 89 [2020-04-18 03:06:48,580 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-04-18 03:06:49,016 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-04-18 03:06:49,418 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2020-04-18 03:06:49,706 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-04-18 03:06:50,074 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-04-18 03:06:50,309 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2020-04-18 03:06:50,502 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-04-18 03:06:50,786 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2020-04-18 03:06:51,161 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2020-04-18 03:06:51,545 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-04-18 03:06:51,933 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 67 [2020-04-18 03:06:52,111 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-04-18 03:06:52,511 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-04-18 03:06:52,848 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 91 [2020-04-18 03:06:53,214 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 80 [2020-04-18 03:06:53,454 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2020-04-18 03:06:53,670 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-04-18 03:06:53,905 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2020-04-18 03:06:54,104 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2020-04-18 03:06:54,301 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2020-04-18 03:06:54,483 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-04-18 03:06:54,811 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-04-18 03:06:55,105 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-04-18 03:06:55,538 WARN L192 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 93 [2020-04-18 03:06:56,135 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2020-04-18 03:06:56,445 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 84 [2020-04-18 03:06:56,686 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 47 [2020-04-18 03:06:56,962 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2020-04-18 03:06:57,176 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2020-04-18 03:06:57,384 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-04-18 03:06:57,753 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-04-18 03:06:58,053 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-04-18 03:06:58,342 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2020-04-18 03:06:58,642 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-04-18 03:06:58,823 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-04-18 03:06:59,251 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2020-04-18 03:06:59,513 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-04-18 03:06:59,828 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-04-18 03:07:00,128 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2020-04-18 03:07:00,459 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 84 [2020-04-18 03:07:00,668 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2020-04-18 03:07:00,991 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-04-18 03:07:01,258 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-04-18 03:07:01,452 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-04-18 03:07:01,731 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-04-18 03:07:01,914 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-04-18 03:07:02,663 WARN L192 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 93 [2020-04-18 03:07:02,959 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2020-04-18 03:07:03,154 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-04-18 03:07:03,348 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-04-18 03:07:03,579 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-04-18 03:07:03,753 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-04-18 03:07:04,150 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2020-04-18 03:07:04,523 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 95 [2020-04-18 03:07:05,047 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2020-04-18 03:07:05,515 WARN L192 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 82 [2020-04-18 03:07:05,965 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-04-18 03:07:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:06,396 INFO L93 Difference]: Finished difference Result 635 states and 1401 transitions. [2020-04-18 03:07:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-04-18 03:07:06,396 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 23 [2020-04-18 03:07:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:06,400 INFO L225 Difference]: With dead ends: 635 [2020-04-18 03:07:06,401 INFO L226 Difference]: Without dead ends: 635 [2020-04-18 03:07:06,407 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9104 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=2765, Invalid=22041, Unknown=0, NotChecked=0, Total=24806 [2020-04-18 03:07:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-04-18 03:07:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 405. [2020-04-18 03:07:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-04-18 03:07:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 904 transitions. [2020-04-18 03:07:06,417 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 904 transitions. Word has length 23 [2020-04-18 03:07:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:06,417 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 904 transitions. [2020-04-18 03:07:06,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-04-18 03:07:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 904 transitions. [2020-04-18 03:07:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 03:07:06,419 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:06,419 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:06,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:06,627 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]=== [2020-04-18 03:07:06,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:06,627 INFO L82 PathProgramCache]: Analyzing trace with hash -4745468, now seen corresponding path program 12 times [2020-04-18 03:07:06,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:06,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891957996] [2020-04-18 03:07:06,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:07,159 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 38 [2020-04-18 03:07:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:08,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891957996] [2020-04-18 03:07:08,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249802001] [2020-04-18 03:07:08,103 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 [2020-04-18 03:07:08,172 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-18 03:07:08,173 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:08,174 WARN L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 91 conjunts are in the unsatisfiable core [2020-04-18 03:07:08,176 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:08,188 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 03:07:08,188 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:08,207 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 03:07:08,212 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,213 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:07:08,213 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:08,223 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:08,224 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:08,224 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:07:08,630 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,631 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:08,657 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:08,657 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:07:08,658 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:08,715 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-18 03:07:08,716 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:08,716 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-04-18 03:07:08,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:08,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:08,863 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,865 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,869 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,881 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:08,884 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,892 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 [2020-04-18 03:07:08,893 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:08,902 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,903 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,904 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,916 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:08,919 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,926 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 03:07:08,927 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:08,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,932 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,933 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:08,934 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 [2020-04-18 03:07:08,935 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:08,954 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:08,955 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:08,955 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:260, output treesize:46 [2020-04-18 03:07:09,232 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:09,233 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 127 [2020-04-18 03:07:09,234 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:09,297 INFO L619 ElimStorePlain]: treesize reduction 64, result has 47.5 percent of original size [2020-04-18 03:07:09,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:09,298 INFO L539 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:09,299 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:58, output treesize:29 [2020-04-18 03:07:09,562 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:09,563 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2020-04-18 03:07:09,563 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:09,569 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:09,569 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:09,569 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-04-18 03:07:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:09,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:09,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 36 [2020-04-18 03:07:09,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789468066] [2020-04-18 03:07:09,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-18 03:07:09,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:09,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-18 03:07:09,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 03:07:09,699 INFO L87 Difference]: Start difference. First operand 405 states and 904 transitions. Second operand 38 states. [2020-04-18 03:07:10,329 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-04-18 03:07:10,884 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-04-18 03:07:11,164 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2020-04-18 03:07:11,573 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2020-04-18 03:07:11,802 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-04-18 03:07:12,245 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2020-04-18 03:07:12,458 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-04-18 03:07:12,635 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-04-18 03:07:12,871 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2020-04-18 03:07:13,099 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2020-04-18 03:07:13,311 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2020-04-18 03:07:13,690 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2020-04-18 03:07:14,223 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2020-04-18 03:07:14,654 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2020-04-18 03:07:15,130 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2020-04-18 03:07:15,286 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-04-18 03:07:15,701 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2020-04-18 03:07:16,223 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2020-04-18 03:07:16,400 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-04-18 03:07:16,861 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2020-04-18 03:07:17,236 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2020-04-18 03:07:17,455 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-04-18 03:07:17,769 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-04-18 03:07:17,970 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-04-18 03:07:18,398 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-04-18 03:07:18,629 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2020-04-18 03:07:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:19,932 INFO L93 Difference]: Finished difference Result 700 states and 1555 transitions. [2020-04-18 03:07:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-04-18 03:07:19,932 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 24 [2020-04-18 03:07:19,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:19,937 INFO L225 Difference]: With dead ends: 700 [2020-04-18 03:07:19,937 INFO L226 Difference]: Without dead ends: 700 [2020-04-18 03:07:19,939 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1166, Invalid=6666, Unknown=0, NotChecked=0, Total=7832 [2020-04-18 03:07:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-04-18 03:07:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 388. [2020-04-18 03:07:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-04-18 03:07:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 859 transitions. [2020-04-18 03:07:19,948 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 859 transitions. Word has length 24 [2020-04-18 03:07:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:19,949 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 859 transitions. [2020-04-18 03:07:19,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-04-18 03:07:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 859 transitions. [2020-04-18 03:07:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:19,950 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:19,950 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:20,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:20,154 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]=== [2020-04-18 03:07:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:20,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1265695988, now seen corresponding path program 1 times [2020-04-18 03:07:20,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:20,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050665309] [2020-04-18 03:07:20,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:20,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050665309] [2020-04-18 03:07:20,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343662782] [2020-04-18 03:07:20,951 INFO L94 rtionOrderModulation]: Keeping assertion order 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 [2020-04-18 03:07:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:21,023 WARN L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 92 conjunts are in the unsatisfiable core [2020-04-18 03:07:21,025 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:21,043 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 03:07:21,044 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,061 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 03:07:21,064 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:21,064 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:07:21,065 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,075 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:21,076 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. [2020-04-18 03:07:21,076 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-18 03:07:21,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:21,377 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:21,377 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:07:21,378 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,419 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-18 03:07:21,420 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. [2020-04-18 03:07:21,421 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:37 [2020-04-18 03:07:21,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:21,476 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:21,491 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:21,500 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 [2020-04-18 03:07:21,501 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,522 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:21,537 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 [2020-04-18 03:07:21,537 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,540 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 [2020-04-18 03:07:21,541 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,552 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:21,553 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. [2020-04-18 03:07:21,553 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:189, output treesize:29 [2020-04-18 03:07:21,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:21,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:21,709 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:21,713 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:21,716 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 [2020-04-18 03:07:21,717 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,730 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:21,733 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:21,736 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 [2020-04-18 03:07:21,737 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,742 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 [2020-04-18 03:07:21,742 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,762 INFO L619 ElimStorePlain]: treesize reduction 4, result has 86.2 percent of original size [2020-04-18 03:07:21,762 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. [2020-04-18 03:07:21,763 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:189, output treesize:25 [2020-04-18 03:07:21,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:21,911 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:21,911 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 21 [2020-04-18 03:07:21,911 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,922 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:21,922 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 22 [2020-04-18 03:07:21,923 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,926 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:21,927 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:21,927 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:74, output treesize:3 [2020-04-18 03:07:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:21,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:21,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 30 [2020-04-18 03:07:21,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344535200] [2020-04-18 03:07:21,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-04-18 03:07:21,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:21,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-04-18 03:07:21,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2020-04-18 03:07:21,935 INFO L87 Difference]: Start difference. First operand 388 states and 859 transitions. Second operand 31 states. [2020-04-18 03:07:22,750 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2020-04-18 03:07:23,269 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-04-18 03:07:23,541 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2020-04-18 03:07:23,717 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 45 [2020-04-18 03:07:24,032 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2020-04-18 03:07:24,201 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 42 [2020-04-18 03:07:24,543 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 52 [2020-04-18 03:07:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:25,824 INFO L93 Difference]: Finished difference Result 481 states and 1047 transitions. [2020-04-18 03:07:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 03:07:25,825 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 25 [2020-04-18 03:07:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:25,828 INFO L225 Difference]: With dead ends: 481 [2020-04-18 03:07:25,828 INFO L226 Difference]: Without dead ends: 464 [2020-04-18 03:07:25,829 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=415, Invalid=2237, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 03:07:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-04-18 03:07:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 447. [2020-04-18 03:07:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-04-18 03:07:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 985 transitions. [2020-04-18 03:07:25,837 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 985 transitions. Word has length 25 [2020-04-18 03:07:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:25,837 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 985 transitions. [2020-04-18 03:07:25,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-04-18 03:07:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 985 transitions. [2020-04-18 03:07:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:25,838 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:25,838 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:26,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:26,042 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]=== [2020-04-18 03:07:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:26,043 INFO L82 PathProgramCache]: Analyzing trace with hash -51521140, now seen corresponding path program 2 times [2020-04-18 03:07:26,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:26,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938108408] [2020-04-18 03:07:26,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:26,845 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-04-18 03:07:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:26,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938108408] [2020-04-18 03:07:26,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997310097] [2020-04-18 03:07:26,956 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 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 [2020-04-18 03:07:27,060 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:07:27,061 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:27,063 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 86 conjunts are in the unsatisfiable core [2020-04-18 03:07:27,065 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:27,075 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:07:27,076 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:07:27,100 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:07:27,104 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:27,105 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:07:27,105 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:27,116 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:27,117 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:27,117 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:07:27,407 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:27,435 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:27,436 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 [2020-04-18 03:07:27,437 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:27,481 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-18 03:07:27,482 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:27,482 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:37 [2020-04-18 03:07:27,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:27,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:27,598 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:27,604 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 52 treesize of output 42 [2020-04-18 03:07:27,605 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:27,612 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:27,619 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 [2020-04-18 03:07:27,619 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:27,623 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 64 treesize of output 50 [2020-04-18 03:07:27,624 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:27,632 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:27,633 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:27,633 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-18 03:07:27,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:27,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:27,790 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:27,792 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:27,797 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 [2020-04-18 03:07:27,798 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:27,811 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:27,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:27,817 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 [2020-04-18 03:07:27,818 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:27,822 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 [2020-04-18 03:07:27,823 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:27,831 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:27,832 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:27,832 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-18 03:07:27,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:27,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:27,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2020-04-18 03:07:27,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368684425] [2020-04-18 03:07:27,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-04-18 03:07:27,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:27,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-04-18 03:07:27,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2020-04-18 03:07:27,930 INFO L87 Difference]: Start difference. First operand 447 states and 985 transitions. Second operand 31 states. [2020-04-18 03:07:30,234 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-04-18 03:07:32,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:32,446 INFO L93 Difference]: Finished difference Result 560 states and 1218 transitions. [2020-04-18 03:07:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 03:07:32,447 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 25 [2020-04-18 03:07:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:32,450 INFO L225 Difference]: With dead ends: 560 [2020-04-18 03:07:32,450 INFO L226 Difference]: Without dead ends: 543 [2020-04-18 03:07:32,451 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=516, Invalid=2564, Unknown=0, NotChecked=0, Total=3080 [2020-04-18 03:07:32,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-04-18 03:07:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 484. [2020-04-18 03:07:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-04-18 03:07:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1064 transitions. [2020-04-18 03:07:32,460 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1064 transitions. Word has length 25 [2020-04-18 03:07:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:32,460 INFO L479 AbstractCegarLoop]: Abstraction has 484 states and 1064 transitions. [2020-04-18 03:07:32,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-04-18 03:07:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1064 transitions. [2020-04-18 03:07:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:32,462 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:32,462 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:32,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:32,666 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]=== [2020-04-18 03:07:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:32,667 INFO L82 PathProgramCache]: Analyzing trace with hash -559508754, now seen corresponding path program 3 times [2020-04-18 03:07:32,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:32,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997318859] [2020-04-18 03:07:32,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:33,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997318859] [2020-04-18 03:07:33,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640305506] [2020-04-18 03:07:33,646 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 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 [2020-04-18 03:07:33,721 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:07:33,721 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:33,722 WARN L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 88 conjunts are in the unsatisfiable core [2020-04-18 03:07:33,724 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:33,735 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:07:33,736 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:07:33,767 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:07:33,771 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:33,772 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:07:33,772 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:33,783 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:33,784 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:33,784 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:07:34,020 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:34,048 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:34,049 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:07:34,050 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:34,094 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-18 03:07:34,095 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:34,095 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:37 [2020-04-18 03:07:34,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:34,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:34,161 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:34,168 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 [2020-04-18 03:07:34,169 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:34,179 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:34,186 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 52 treesize of output 42 [2020-04-18 03:07:34,186 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:34,193 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 64 treesize of output 50 [2020-04-18 03:07:34,193 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:34,221 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:34,222 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:34,222 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-18 03:07:34,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:34,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:34,455 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:34,457 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:34,458 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 [2020-04-18 03:07:34,459 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:34,481 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:34,483 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:34,485 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 [2020-04-18 03:07:34,486 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:34,489 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 [2020-04-18 03:07:34,490 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:34,500 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:34,501 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:34,501 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:189, output treesize:29 [2020-04-18 03:07:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:34,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:34,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 32 [2020-04-18 03:07:34,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681379869] [2020-04-18 03:07:34,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-18 03:07:34,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:34,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-18 03:07:34,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 03:07:34,727 INFO L87 Difference]: Start difference. First operand 484 states and 1064 transitions. Second operand 33 states. [2020-04-18 03:07:35,356 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2020-04-18 03:07:35,782 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-04-18 03:07:35,956 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-04-18 03:07:36,225 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2020-04-18 03:07:36,633 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-04-18 03:07:36,844 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-04-18 03:07:37,285 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2020-04-18 03:07:37,479 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2020-04-18 03:07:37,896 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2020-04-18 03:07:39,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:39,439 INFO L93 Difference]: Finished difference Result 566 states and 1230 transitions. [2020-04-18 03:07:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-18 03:07:39,439 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 25 [2020-04-18 03:07:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:39,443 INFO L225 Difference]: With dead ends: 566 [2020-04-18 03:07:39,443 INFO L226 Difference]: Without dead ends: 549 [2020-04-18 03:07:39,444 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=462, Invalid=2400, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 03:07:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-04-18 03:07:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 484. [2020-04-18 03:07:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-04-18 03:07:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1064 transitions. [2020-04-18 03:07:39,452 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1064 transitions. Word has length 25 [2020-04-18 03:07:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:39,452 INFO L479 AbstractCegarLoop]: Abstraction has 484 states and 1064 transitions. [2020-04-18 03:07:39,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-18 03:07:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1064 transitions. [2020-04-18 03:07:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:39,453 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:39,453 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:39,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:39,654 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]=== [2020-04-18 03:07:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1742250316, now seen corresponding path program 4 times [2020-04-18 03:07:39,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:39,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804163231] [2020-04-18 03:07:39,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:40,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804163231] [2020-04-18 03:07:40,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28875198] [2020-04-18 03:07:40,545 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 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 [2020-04-18 03:07:40,614 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:07:40,614 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:40,616 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 84 conjunts are in the unsatisfiable core [2020-04-18 03:07:40,629 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:40,639 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:07:40,640 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:07:40,663 INFO L619 ElimStorePlain]: treesize reduction 14, result has 75.0 percent of original size [2020-04-18 03:07:40,677 INFO L343 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2020-04-18 03:07:40,677 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 [2020-04-18 03:07:40,678 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:40,686 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:40,686 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:40,687 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:49, output treesize:28 [2020-04-18 03:07:40,884 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:40,910 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:40,911 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:07:40,912 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:40,951 INFO L619 ElimStorePlain]: treesize reduction 46, result has 48.3 percent of original size [2020-04-18 03:07:40,952 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:40,952 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:56, output treesize:34 [2020-04-18 03:07:41,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:41,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:41,061 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,074 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,078 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 59 treesize of output 43 [2020-04-18 03:07:41,079 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:41,084 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,095 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,097 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 [2020-04-18 03:07:41,097 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:41,101 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,102 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 60 treesize of output 44 [2020-04-18 03:07:41,102 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:41,112 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:41,112 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:41,113 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:206, output treesize:28 [2020-04-18 03:07:41,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:41,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:41,277 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,292 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 [2020-04-18 03:07:41,293 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:41,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,309 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:41,312 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 66 treesize of output 52 [2020-04-18 03:07:41,313 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:41,326 INFO L343 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2020-04-18 03:07:41,327 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 53 treesize of output 43 [2020-04-18 03:07:41,328 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:41,338 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:41,339 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:41,339 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:186, output treesize:28 [2020-04-18 03:07:41,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:41,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:41,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-04-18 03:07:41,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128231549] [2020-04-18 03:07:41,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-04-18 03:07:41,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:41,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-04-18 03:07:41,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2020-04-18 03:07:41,445 INFO L87 Difference]: Start difference. First operand 484 states and 1064 transitions. Second operand 29 states. [2020-04-18 03:07:42,888 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-04-18 03:07:43,245 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-04-18 03:07:43,845 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-04-18 03:07:44,034 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46 [2020-04-18 03:07:44,227 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2020-04-18 03:07:44,566 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-04-18 03:07:44,800 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2020-04-18 03:07:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:46,334 INFO L93 Difference]: Finished difference Result 532 states and 1157 transitions. [2020-04-18 03:07:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-18 03:07:46,335 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 25 [2020-04-18 03:07:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:46,338 INFO L225 Difference]: With dead ends: 532 [2020-04-18 03:07:46,338 INFO L226 Difference]: Without dead ends: 515 [2020-04-18 03:07:46,339 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=463, Invalid=2507, Unknown=0, NotChecked=0, Total=2970 [2020-04-18 03:07:46,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-04-18 03:07:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 456. [2020-04-18 03:07:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-04-18 03:07:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1003 transitions. [2020-04-18 03:07:46,355 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1003 transitions. Word has length 25 [2020-04-18 03:07:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:46,355 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 1003 transitions. [2020-04-18 03:07:46,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-04-18 03:07:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1003 transitions. [2020-04-18 03:07:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:46,356 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:46,356 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:46,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:46,557 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]=== [2020-04-18 03:07:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash -134526514, now seen corresponding path program 13 times [2020-04-18 03:07:46,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:46,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175002066] [2020-04-18 03:07:46,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:47,311 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 40 [2020-04-18 03:07:47,592 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 40 [2020-04-18 03:07:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:48,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175002066] [2020-04-18 03:07:48,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067079056] [2020-04-18 03:07:48,256 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 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 [2020-04-18 03:07:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:48,330 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 98 conjunts are in the unsatisfiable core [2020-04-18 03:07:48,333 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:48,338 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:48,348 INFO L343 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-04-18 03:07:48,349 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 [2020-04-18 03:07:48,349 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:48,357 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:48,358 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. [2020-04-18 03:07:48,358 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:27 [2020-04-18 03:07:48,700 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:48,702 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:48,702 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:48,729 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:48,730 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 55 treesize of output 82 [2020-04-18 03:07:48,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:48,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:48,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:48,733 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:07:48,807 INFO L619 ElimStorePlain]: treesize reduction 194, result has 26.2 percent of original size [2020-04-18 03:07:48,807 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:48,807 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:73, output treesize:69 [2020-04-18 03:07:48,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:48,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:48,977 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:48,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,025 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:49,025 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 3 case distinctions, treesize of input 87 treesize of output 100 [2020-04-18 03:07:49,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,039 INFO L539 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:49,055 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,070 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,099 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:49,099 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 3 case distinctions, treesize of input 86 treesize of output 99 [2020-04-18 03:07:49,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,103 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,106 INFO L539 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:49,111 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,138 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:49,138 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 110 [2020-04-18 03:07:49,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,153 INFO L539 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:49,248 INFO L619 ElimStorePlain]: treesize reduction 357, result has 14.6 percent of original size [2020-04-18 03:07:49,249 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-04-18 03:07:49,249 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:311, output treesize:61 [2020-04-18 03:07:49,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,356 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,357 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,395 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:49,396 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 114 [2020-04-18 03:07:49,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,415 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 4 xjuncts. [2020-04-18 03:07:49,543 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 35 [2020-04-18 03:07:49,544 INFO L619 ElimStorePlain]: treesize reduction 1019, result has 6.9 percent of original size [2020-04-18 03:07:49,544 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:49,545 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:80, output treesize:58 [2020-04-18 03:07:49,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,618 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,619 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,633 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 54 [2020-04-18 03:07:49,634 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:49,641 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,643 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,660 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 72 treesize of output 52 [2020-04-18 03:07:49,660 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:49,672 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,673 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:49,677 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 72 treesize of output 52 [2020-04-18 03:07:49,678 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:49,738 INFO L619 ElimStorePlain]: treesize reduction 142, result has 24.5 percent of original size [2020-04-18 03:07:49,739 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. [2020-04-18 03:07:49,739 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:263, output treesize:46 [2020-04-18 03:07:49,873 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:49,874 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 53 [2020-04-18 03:07:49,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:49,879 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:07:49,916 INFO L619 ElimStorePlain]: treesize reduction 30, result has 28.6 percent of original size [2020-04-18 03:07:49,917 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:49,917 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:9 [2020-04-18 03:07:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:49,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:49,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 31 [2020-04-18 03:07:49,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005807746] [2020-04-18 03:07:49,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-18 03:07:49,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:49,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-18 03:07:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 03:07:49,988 INFO L87 Difference]: Start difference. First operand 456 states and 1003 transitions. Second operand 33 states. [2020-04-18 03:07:51,297 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-04-18 03:07:51,542 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-04-18 03:07:52,148 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-04-18 03:07:52,472 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 03:07:52,721 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 03:07:53,220 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-04-18 03:07:53,502 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 03:07:53,922 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-04-18 03:07:54,177 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-04-18 03:07:54,624 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-04-18 03:07:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:55,428 INFO L93 Difference]: Finished difference Result 569 states and 1250 transitions. [2020-04-18 03:07:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-18 03:07:55,429 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 25 [2020-04-18 03:07:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:55,433 INFO L225 Difference]: With dead ends: 569 [2020-04-18 03:07:55,433 INFO L226 Difference]: Without dead ends: 569 [2020-04-18 03:07:55,434 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 6 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=452, Invalid=3088, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 03:07:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-04-18 03:07:55,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 413. [2020-04-18 03:07:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-04-18 03:07:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 912 transitions. [2020-04-18 03:07:55,440 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 912 transitions. Word has length 25 [2020-04-18 03:07:55,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:55,441 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 912 transitions. [2020-04-18 03:07:55,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-18 03:07:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 912 transitions. [2020-04-18 03:07:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:07:55,442 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:55,442 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:55,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:55,646 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]=== [2020-04-18 03:07:55,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:55,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1818538862, now seen corresponding path program 14 times [2020-04-18 03:07:55,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:55,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957041311] [2020-04-18 03:07:55,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:56,382 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 39 [2020-04-18 03:07:56,699 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 44 [2020-04-18 03:07:57,142 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 36 [2020-04-18 03:07:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:57,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957041311] [2020-04-18 03:07:57,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421876467] [2020-04-18 03:07:57,480 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 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 [2020-04-18 03:07:57,551 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:07:57,552 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:57,554 WARN L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 98 conjunts are in the unsatisfiable core [2020-04-18 03:07:57,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:57,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:57,574 INFO L343 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2020-04-18 03:07:57,575 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 [2020-04-18 03:07:57,575 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:57,583 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:57,584 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. [2020-04-18 03:07:57,584 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:27 [2020-04-18 03:07:57,824 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:57,825 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:57,825 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:07:57,853 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:57,853 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 59 treesize of output 86 [2020-04-18 03:07:57,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:57,855 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:57,921 INFO L619 ElimStorePlain]: treesize reduction 47, result has 54.8 percent of original size [2020-04-18 03:07:57,922 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:57,922 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:80, output treesize:60 [2020-04-18 03:07:58,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,053 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,055 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,056 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,072 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 77 treesize of output 51 [2020-04-18 03:07:58,072 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,080 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,081 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,090 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,091 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 78 treesize of output 52 [2020-04-18 03:07:58,092 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,096 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,098 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,099 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,100 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 92 treesize of output 60 [2020-04-18 03:07:58,100 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,127 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:58,127 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,127 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:284, output treesize:54 [2020-04-18 03:07:58,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:07:58,330 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:58,331 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 116 [2020-04-18 03:07:58,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,334 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,405 INFO L619 ElimStorePlain]: treesize reduction 74, result has 46.0 percent of original size [2020-04-18 03:07:58,406 INFO L539 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,407 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:76, output treesize:54 [2020-04-18 03:07:58,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,488 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 46 [2020-04-18 03:07:58,489 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,508 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 44 [2020-04-18 03:07:58,509 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,525 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 58 treesize of output 44 [2020-04-18 03:07:58,525 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,585 INFO L619 ElimStorePlain]: treesize reduction 127, result has 27.8 percent of original size [2020-04-18 03:07:58,586 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. [2020-04-18 03:07:58,586 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:221, output treesize:49 [2020-04-18 03:07:58,725 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:07:58,725 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 54 [2020-04-18 03:07:58,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:07:58,730 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-04-18 03:07:58,756 INFO L619 ElimStorePlain]: treesize reduction 41, result has 24.1 percent of original size [2020-04-18 03:07:58,757 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:07:58,757 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:61, output treesize:10 [2020-04-18 03:07:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:58,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:58,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 31 [2020-04-18 03:07:58,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800726235] [2020-04-18 03:07:58,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-04-18 03:07:58,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:58,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-04-18 03:07:58,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 03:07:58,837 INFO L87 Difference]: Start difference. First operand 413 states and 912 transitions. Second operand 33 states. [2020-04-18 03:07:59,353 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-04-18 03:08:00,056 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-04-18 03:08:00,289 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-04-18 03:08:00,826 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-04-18 03:08:01,130 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-04-18 03:08:01,348 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-04-18 03:08:01,832 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-04-18 03:08:02,101 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-04-18 03:08:02,487 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-04-18 03:08:02,746 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-04-18 03:08:03,200 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-04-18 03:08:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:03,894 INFO L93 Difference]: Finished difference Result 507 states and 1119 transitions. [2020-04-18 03:08:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 03:08:03,895 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 25 [2020-04-18 03:08:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:03,899 INFO L225 Difference]: With dead ends: 507 [2020-04-18 03:08:03,899 INFO L226 Difference]: Without dead ends: 507 [2020-04-18 03:08:03,899 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 8 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=457, Invalid=2965, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 03:08:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-04-18 03:08:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 403. [2020-04-18 03:08:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-04-18 03:08:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 890 transitions. [2020-04-18 03:08:03,906 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 890 transitions. Word has length 25 [2020-04-18 03:08:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:03,907 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 890 transitions. [2020-04-18 03:08:03,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-04-18 03:08:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 890 transitions. [2020-04-18 03:08:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:03,908 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:03,908 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:04,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:04,112 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]=== [2020-04-18 03:08:04,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:04,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1019314796, now seen corresponding path program 5 times [2020-04-18 03:08:04,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:04,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483439879] [2020-04-18 03:08:04,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:04,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483439879] [2020-04-18 03:08:04,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502904746] [2020-04-18 03:08:04,868 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 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 [2020-04-18 03:08:04,943 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:08:04,943 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:04,945 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 80 conjunts are in the unsatisfiable core [2020-04-18 03:08:04,947 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:04,965 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:08:04,965 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:08:04,995 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:08:04,999 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:05,000 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:08:05,000 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:05,011 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:05,012 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. [2020-04-18 03:08:05,012 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-18 03:08:05,303 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:05,329 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:05,329 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:08:05,330 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:05,374 INFO L619 ElimStorePlain]: treesize reduction 46, result has 50.0 percent of original size [2020-04-18 03:08:05,374 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. [2020-04-18 03:08:05,375 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:37 [2020-04-18 03:08:05,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:05,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:05,435 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:05,441 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 [2020-04-18 03:08:05,442 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:05,450 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:05,457 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 52 treesize of output 42 [2020-04-18 03:08:05,458 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:05,461 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 51 treesize of output 41 [2020-04-18 03:08:05,462 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:05,471 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:05,471 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. [2020-04-18 03:08:05,471 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:189, output treesize:29 [2020-04-18 03:08:05,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:05,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:05,625 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:05,629 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:05,633 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 [2020-04-18 03:08:05,633 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:05,643 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:05,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:05,650 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 [2020-04-18 03:08:05,651 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:05,655 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-04-18 03:08:05,656 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:05,675 INFO L619 ElimStorePlain]: treesize reduction 4, result has 86.2 percent of original size [2020-04-18 03:08:05,676 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. [2020-04-18 03:08:05,676 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:189, output treesize:25 [2020-04-18 03:08:05,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:05,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:05,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 30 [2020-04-18 03:08:05,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717170015] [2020-04-18 03:08:05,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-04-18 03:08:05,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:05,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-04-18 03:08:05,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2020-04-18 03:08:05,770 INFO L87 Difference]: Start difference. First operand 403 states and 890 transitions. Second operand 31 states. [2020-04-18 03:08:06,785 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2020-04-18 03:08:07,072 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2020-04-18 03:08:07,567 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2020-04-18 03:08:08,059 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2020-04-18 03:08:09,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:09,535 INFO L93 Difference]: Finished difference Result 444 states and 969 transitions. [2020-04-18 03:08:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 03:08:09,536 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 25 [2020-04-18 03:08:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:09,539 INFO L225 Difference]: With dead ends: 444 [2020-04-18 03:08:09,539 INFO L226 Difference]: Without dead ends: 427 [2020-04-18 03:08:09,540 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=363, Invalid=1989, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 03:08:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-04-18 03:08:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 351. [2020-04-18 03:08:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-04-18 03:08:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 781 transitions. [2020-04-18 03:08:09,547 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 781 transitions. Word has length 25 [2020-04-18 03:08:09,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:09,547 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 781 transitions. [2020-04-18 03:08:09,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-04-18 03:08:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 781 transitions. [2020-04-18 03:08:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:08:09,548 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:09,548 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:09,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:09,752 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]=== [2020-04-18 03:08:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:09,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1770531068, now seen corresponding path program 15 times [2020-04-18 03:08:09,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:09,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812135680] [2020-04-18 03:08:09,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:10,505 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2020-04-18 03:08:10,754 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-04-18 03:08:12,379 WARN L192 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-04-18 03:08:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:13,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812135680] [2020-04-18 03:08:13,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469724549] [2020-04-18 03:08:13,150 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 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 [2020-04-18 03:08:13,247 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 03:08:13,247 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:13,249 WARN L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 114 conjunts are in the unsatisfiable core [2020-04-18 03:08:13,251 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:13,266 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 03:08:13,266 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:13,286 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 03:08:13,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:13,290 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:08:13,290 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:13,302 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:13,302 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. [2020-04-18 03:08:13,303 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-18 03:08:13,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:13,877 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:13,877 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:13,908 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:13,908 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:08:13,909 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:13,961 INFO L619 ElimStorePlain]: treesize reduction 46, result has 54.5 percent of original size [2020-04-18 03:08:13,961 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. [2020-04-18 03:08:13,962 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:55 [2020-04-18 03:08:14,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:14,121 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:14,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,154 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,157 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-18 03:08:14,157 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:14,166 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,167 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,168 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,184 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,186 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 03:08:14,187 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:14,196 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,197 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,197 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,198 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 03:08:14,199 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:14,218 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:14,219 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. [2020-04-18 03:08:14,219 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-18 03:08:14,653 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,654 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,655 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,656 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,657 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,658 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:14,697 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:14,698 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 120 [2020-04-18 03:08:14,699 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:14,783 INFO L619 ElimStorePlain]: treesize reduction 72, result has 47.1 percent of original size [2020-04-18 03:08:14,784 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. [2020-04-18 03:08:14,784 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:77, output treesize:55 [2020-04-18 03:08:14,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:14,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:14,890 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,892 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,894 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,918 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,921 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-18 03:08:14,922 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:14,928 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,929 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,930 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,945 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,948 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 03:08:14,949 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:14,952 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,953 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,954 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:14,955 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 03:08:14,956 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:14,975 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:14,975 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. [2020-04-18 03:08:14,976 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:269, output treesize:49 [2020-04-18 03:08:15,425 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:15,426 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 103 [2020-04-18 03:08:15,427 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:15,444 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:15,444 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. [2020-04-18 03:08:15,445 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:39 [2020-04-18 03:08:15,622 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:15,622 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 [2020-04-18 03:08:15,623 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:15,628 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:15,628 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:08:15,629 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:7 [2020-04-18 03:08:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:15,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:15,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 44 [2020-04-18 03:08:15,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837628112] [2020-04-18 03:08:15,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-04-18 03:08:15,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:15,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-04-18 03:08:15,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 03:08:15,668 INFO L87 Difference]: Start difference. First operand 351 states and 781 transitions. Second operand 46 states. [2020-04-18 03:08:16,240 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-04-18 03:08:16,501 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 52 [2020-04-18 03:08:16,756 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 57 [2020-04-18 03:08:17,013 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 62 [2020-04-18 03:08:22,272 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-04-18 03:08:22,802 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-04-18 03:08:23,144 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-04-18 03:08:23,492 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2020-04-18 03:08:23,761 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-04-18 03:08:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:25,920 INFO L93 Difference]: Finished difference Result 615 states and 1345 transitions. [2020-04-18 03:08:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-04-18 03:08:25,921 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 30 [2020-04-18 03:08:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:25,925 INFO L225 Difference]: With dead ends: 615 [2020-04-18 03:08:25,925 INFO L226 Difference]: Without dead ends: 615 [2020-04-18 03:08:25,926 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3805 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1173, Invalid=10383, Unknown=0, NotChecked=0, Total=11556 [2020-04-18 03:08:25,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-04-18 03:08:25,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 497. [2020-04-18 03:08:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-04-18 03:08:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1111 transitions. [2020-04-18 03:08:25,934 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1111 transitions. Word has length 30 [2020-04-18 03:08:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:25,935 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 1111 transitions. [2020-04-18 03:08:25,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-04-18 03:08:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1111 transitions. [2020-04-18 03:08:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:08:25,936 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:25,936 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:26,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:26,145 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]=== [2020-04-18 03:08:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:26,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1237545890, now seen corresponding path program 6 times [2020-04-18 03:08:26,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:26,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77799473] [2020-04-18 03:08:26,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:26,840 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-04-18 03:08:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:27,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77799473] [2020-04-18 03:08:27,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148967565] [2020-04-18 03:08:27,565 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 [2020-04-18 03:08:27,647 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-04-18 03:08:27,648 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:27,650 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 126 conjunts are in the unsatisfiable core [2020-04-18 03:08:27,652 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:27,665 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 03:08:27,666 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:27,689 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 03:08:27,692 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:27,693 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:08:27,693 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:27,704 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:27,705 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:27,705 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:08:28,095 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:28,096 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:28,097 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:28,123 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:28,124 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 [2020-04-18 03:08:28,124 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:28,190 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-18 03:08:28,191 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:28,191 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-18 03:08:28,318 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:28,318 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:28,327 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:28,342 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:28,344 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:28,345 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 [2020-04-18 03:08:28,346 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:28,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:28,367 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:28,369 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:28,370 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 60 treesize of output 44 [2020-04-18 03:08:28,371 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:28,376 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:28,378 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 74 treesize of output 52 [2020-04-18 03:08:28,378 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:28,398 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:28,398 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:28,398 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-18 03:08:28,642 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:28,643 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 [2020-04-18 03:08:28,644 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:28,660 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:28,661 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:28,661 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:39 [2020-04-18 03:08:28,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:28,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:29,008 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:29,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:29,052 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:29,052 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 74 treesize of output 113 [2020-04-18 03:08:29,054 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:29,088 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:29,093 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:29,131 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:29,131 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 [2020-04-18 03:08:29,132 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:29,163 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:29,164 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 87 treesize of output 124 [2020-04-18 03:08:29,165 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:29,211 INFO L619 ElimStorePlain]: treesize reduction 40, result has 54.5 percent of original size [2020-04-18 03:08:29,212 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:29,212 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:267, output treesize:48 [2020-04-18 03:08:29,394 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:29,394 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 58 [2020-04-18 03:08:29,395 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:29,400 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:29,400 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:08:29,401 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-04-18 03:08:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:29,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:29,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 39 [2020-04-18 03:08:29,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747068669] [2020-04-18 03:08:29,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-04-18 03:08:29,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:29,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-04-18 03:08:29,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1511, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 03:08:29,491 INFO L87 Difference]: Start difference. First operand 497 states and 1111 transitions. Second operand 41 states. [2020-04-18 03:08:32,657 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-04-18 03:08:32,870 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-04-18 03:08:35,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:35,103 INFO L93 Difference]: Finished difference Result 632 states and 1394 transitions. [2020-04-18 03:08:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-18 03:08:35,103 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 30 [2020-04-18 03:08:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:35,107 INFO L225 Difference]: With dead ends: 632 [2020-04-18 03:08:35,107 INFO L226 Difference]: Without dead ends: 632 [2020-04-18 03:08:35,108 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=418, Invalid=4004, Unknown=0, NotChecked=0, Total=4422 [2020-04-18 03:08:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-04-18 03:08:35,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 581. [2020-04-18 03:08:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-04-18 03:08:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1291 transitions. [2020-04-18 03:08:35,117 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1291 transitions. Word has length 30 [2020-04-18 03:08:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:35,117 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 1291 transitions. [2020-04-18 03:08:35,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-04-18 03:08:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1291 transitions. [2020-04-18 03:08:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:08:35,119 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:35,119 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:35,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:35,323 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]=== [2020-04-18 03:08:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:35,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1579433714, now seen corresponding path program 7 times [2020-04-18 03:08:35,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:35,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72343768] [2020-04-18 03:08:35,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:35,923 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 34 [2020-04-18 03:08:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:36,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72343768] [2020-04-18 03:08:36,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148221766] [2020-04-18 03:08:36,531 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 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 [2020-04-18 03:08:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:36,609 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 122 conjunts are in the unsatisfiable core [2020-04-18 03:08:36,611 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:36,619 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:08:36,619 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:08:36,647 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:08:36,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:36,652 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:08:36,652 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:36,663 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:36,664 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. [2020-04-18 03:08:36,664 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:31 [2020-04-18 03:08:37,064 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,066 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,067 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:37,093 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:37,094 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:08:37,094 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:37,171 INFO L619 ElimStorePlain]: treesize reduction 46, result has 57.8 percent of original size [2020-04-18 03:08:37,172 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. [2020-04-18 03:08:37,172 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:76, output treesize:60 [2020-04-18 03:08:37,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:37,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:37,383 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,385 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,386 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,405 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,410 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 56 [2020-04-18 03:08:37,410 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:37,418 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,419 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,421 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,437 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,440 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2020-04-18 03:08:37,440 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:37,446 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,447 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,448 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:37,452 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 64 [2020-04-18 03:08:37,453 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:37,474 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:37,475 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. [2020-04-18 03:08:37,475 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:278, output treesize:52 [2020-04-18 03:08:37,824 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:37,824 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 103 [2020-04-18 03:08:37,825 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:37,849 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:37,849 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. [2020-04-18 03:08:37,850 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:52 [2020-04-18 03:08:37,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:37,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:38,025 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:38,031 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:38,038 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2020-04-18 03:08:38,039 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:38,063 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:38,068 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:38,076 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2020-04-18 03:08:38,077 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:38,087 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2020-04-18 03:08:38,087 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:38,117 INFO L619 ElimStorePlain]: treesize reduction 4, result has 91.3 percent of original size [2020-04-18 03:08:38,117 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. [2020-04-18 03:08:38,118 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:240, output treesize:42 [2020-04-18 03:08:38,317 INFO L343 Elim1Store]: treesize reduction 12, result has 77.4 percent of original size [2020-04-18 03:08:38,318 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 66 [2020-04-18 03:08:38,318 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:38,324 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:38,324 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:08:38,325 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:7 [2020-04-18 03:08:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:38,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:38,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 38 [2020-04-18 03:08:38,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147994463] [2020-04-18 03:08:38,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-18 03:08:38,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:38,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-18 03:08:38,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:38,507 INFO L87 Difference]: Start difference. First operand 581 states and 1291 transitions. Second operand 39 states. [2020-04-18 03:08:40,314 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-04-18 03:08:40,816 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-04-18 03:08:41,042 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-04-18 03:08:41,240 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-04-18 03:08:41,475 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-04-18 03:08:41,862 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-04-18 03:08:43,207 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-04-18 03:08:43,425 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-04-18 03:08:43,730 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-04-18 03:08:44,243 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2020-04-18 03:08:44,817 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-04-18 03:08:45,259 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-04-18 03:08:45,476 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-04-18 03:08:45,980 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-04-18 03:08:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:46,943 INFO L93 Difference]: Finished difference Result 626 states and 1375 transitions. [2020-04-18 03:08:46,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-18 03:08:46,943 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 30 [2020-04-18 03:08:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:46,947 INFO L225 Difference]: With dead ends: 626 [2020-04-18 03:08:46,948 INFO L226 Difference]: Without dead ends: 614 [2020-04-18 03:08:46,949 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=739, Invalid=5267, Unknown=0, NotChecked=0, Total=6006 [2020-04-18 03:08:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-04-18 03:08:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 577. [2020-04-18 03:08:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-04-18 03:08:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1281 transitions. [2020-04-18 03:08:46,957 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1281 transitions. Word has length 30 [2020-04-18 03:08:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:46,957 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 1281 transitions. [2020-04-18 03:08:46,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-04-18 03:08:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1281 transitions. [2020-04-18 03:08:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:08:46,958 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:46,958 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:47,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:47,162 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]=== [2020-04-18 03:08:47,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1988729270, now seen corresponding path program 8 times [2020-04-18 03:08:47,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:47,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692977378] [2020-04-18 03:08:47,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:48,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692977378] [2020-04-18 03:08:48,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840065237] [2020-04-18 03:08:48,638 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 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 [2020-04-18 03:08:48,710 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:08:48,711 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:48,713 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 118 conjunts are in the unsatisfiable core [2020-04-18 03:08:48,715 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:48,722 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:08:48,722 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:08:48,750 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:08:48,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:48,755 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:08:48,756 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:48,766 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:48,767 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:48,767 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:08:49,130 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,131 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,131 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:49,157 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:49,158 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:08:49,159 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:49,222 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-18 03:08:49,223 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:49,223 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-18 03:08:49,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:49,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:49,360 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,376 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:49,378 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,379 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 [2020-04-18 03:08:49,379 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:49,386 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,399 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:49,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,402 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 [2020-04-18 03:08:49,403 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:49,419 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,420 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 [2020-04-18 03:08:49,420 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:49,439 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:49,440 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:49,440 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-18 03:08:49,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:49,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:49,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,822 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:49,827 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,831 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 62 treesize of output 46 [2020-04-18 03:08:49,832 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:49,838 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,846 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:49,849 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,852 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 63 treesize of output 47 [2020-04-18 03:08:49,853 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:49,858 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:49,859 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 75 treesize of output 55 [2020-04-18 03:08:49,859 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:49,882 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:49,882 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:49,882 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:258, output treesize:46 [2020-04-18 03:08:49,960 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 33 treesize of output 38 [2020-04-18 03:08:49,960 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:49,979 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:49,980 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:49,980 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:39 [2020-04-18 03:08:50,135 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:50,135 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 [2020-04-18 03:08:50,136 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:50,141 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:50,142 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:08:50,142 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-18 03:08:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:50,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:50,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 38 [2020-04-18 03:08:50,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101421600] [2020-04-18 03:08:50,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-18 03:08:50,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:50,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-18 03:08:50,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1348, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:50,231 INFO L87 Difference]: Start difference. First operand 577 states and 1281 transitions. Second operand 39 states. [2020-04-18 03:08:51,673 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-04-18 03:08:52,001 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-04-18 03:08:52,573 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-04-18 03:08:53,183 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-04-18 03:08:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:56,352 INFO L93 Difference]: Finished difference Result 622 states and 1362 transitions. [2020-04-18 03:08:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-18 03:08:56,353 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 30 [2020-04-18 03:08:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:56,357 INFO L225 Difference]: With dead ends: 622 [2020-04-18 03:08:56,357 INFO L226 Difference]: Without dead ends: 610 [2020-04-18 03:08:56,358 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=504, Invalid=3918, Unknown=0, NotChecked=0, Total=4422 [2020-04-18 03:08:56,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-04-18 03:08:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 583. [2020-04-18 03:08:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-04-18 03:08:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1293 transitions. [2020-04-18 03:08:56,364 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1293 transitions. Word has length 30 [2020-04-18 03:08:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:56,365 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 1293 transitions. [2020-04-18 03:08:56,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-04-18 03:08:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1293 transitions. [2020-04-18 03:08:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:08:56,366 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:56,366 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:56,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:56,570 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]=== [2020-04-18 03:08:56,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1321452678, now seen corresponding path program 9 times [2020-04-18 03:08:56,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:56,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552894277] [2020-04-18 03:08:56,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:57,200 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 35 [2020-04-18 03:08:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:58,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552894277] [2020-04-18 03:08:58,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806729263] [2020-04-18 03:08:58,057 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 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 [2020-04-18 03:08:58,148 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 03:08:58,148 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:58,150 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 118 conjunts are in the unsatisfiable core [2020-04-18 03:08:58,152 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:58,159 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:08:58,160 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:08:58,191 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:08:58,195 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:58,196 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:08:58,196 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:58,207 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:58,207 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:58,208 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:08:58,537 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:58,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:58,539 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:58,564 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:58,565 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:08:58,566 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:58,630 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-18 03:08:58,631 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:58,631 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-18 03:08:58,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:58,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:58,760 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:58,773 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:58,775 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:58,776 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 [2020-04-18 03:08:58,776 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:58,783 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:58,796 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:58,798 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:58,799 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 [2020-04-18 03:08:58,800 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:58,809 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:58,810 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 [2020-04-18 03:08:58,810 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:58,830 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:58,830 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:58,830 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-18 03:08:59,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:59,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:08:59,224 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:59,232 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:59,236 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:59,239 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 55 [2020-04-18 03:08:59,240 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:59,247 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:59,253 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:08:59,256 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:59,259 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 62 treesize of output 46 [2020-04-18 03:08:59,260 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:59,264 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:08:59,265 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 63 treesize of output 47 [2020-04-18 03:08:59,266 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:59,289 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:59,290 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:59,290 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:258, output treesize:52 [2020-04-18 03:08:59,388 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:59,389 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 [2020-04-18 03:08:59,390 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:59,403 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:59,404 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:08:59,404 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:39 [2020-04-18 03:08:59,541 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:59,542 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 [2020-04-18 03:08:59,542 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:08:59,547 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:08:59,548 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:08:59,548 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-18 03:08:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:59,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:59,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 39 [2020-04-18 03:08:59,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554634479] [2020-04-18 03:08:59,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-04-18 03:08:59,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:59,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-04-18 03:08:59,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 03:08:59,632 INFO L87 Difference]: Start difference. First operand 583 states and 1293 transitions. Second operand 40 states. [2020-04-18 03:09:00,888 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-04-18 03:09:01,164 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2020-04-18 03:09:01,671 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-04-18 03:09:02,235 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-04-18 03:09:03,239 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-04-18 03:09:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:05,447 INFO L93 Difference]: Finished difference Result 628 states and 1376 transitions. [2020-04-18 03:09:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-04-18 03:09:05,447 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 30 [2020-04-18 03:09:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:05,451 INFO L225 Difference]: With dead ends: 628 [2020-04-18 03:09:05,451 INFO L226 Difference]: Without dead ends: 618 [2020-04-18 03:09:05,452 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=720, Invalid=4536, Unknown=0, NotChecked=0, Total=5256 [2020-04-18 03:09:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-04-18 03:09:05,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 581. [2020-04-18 03:09:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-04-18 03:09:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1289 transitions. [2020-04-18 03:09:05,459 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1289 transitions. Word has length 30 [2020-04-18 03:09:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:05,459 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 1289 transitions. [2020-04-18 03:09:05,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-04-18 03:09:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1289 transitions. [2020-04-18 03:09:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:09:05,460 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:05,460 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:05,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:05,661 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]=== [2020-04-18 03:09:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:05,662 INFO L82 PathProgramCache]: Analyzing trace with hash 532773680, now seen corresponding path program 10 times [2020-04-18 03:09:05,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:05,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840203408] [2020-04-18 03:09:05,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:06,269 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 33 [2020-04-18 03:09:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:07,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840203408] [2020-04-18 03:09:07,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994765210] [2020-04-18 03:09:07,093 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 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 [2020-04-18 03:09:07,164 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:09:07,164 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:09:07,166 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 124 conjunts are in the unsatisfiable core [2020-04-18 03:09:07,167 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:07,176 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:09:07,176 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:09:07,199 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:09:07,201 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:07,202 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:09:07,203 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:07,214 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:07,215 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:07,215 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:09:07,527 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:07,529 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:07,529 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:07,555 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:07,555 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:09:07,556 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:07,638 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-18 03:09:07,639 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:07,639 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-18 03:09:07,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:07,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:07,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:07,763 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:07,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:07,767 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 [2020-04-18 03:09:07,767 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:07,783 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:07,793 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:07,795 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:07,796 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 60 treesize of output 44 [2020-04-18 03:09:07,796 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:07,801 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:07,802 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 59 treesize of output 43 [2020-04-18 03:09:07,803 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:07,822 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:07,823 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:07,823 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-18 03:09:08,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:08,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:08,204 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:08,214 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:08,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:08,221 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 62 treesize of output 46 [2020-04-18 03:09:08,222 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:08,230 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:08,238 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:08,241 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:08,244 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 55 [2020-04-18 03:09:08,245 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:08,267 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:08,268 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 63 treesize of output 47 [2020-04-18 03:09:08,269 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:08,294 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:08,295 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:08,295 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:258, output treesize:52 [2020-04-18 03:09:08,400 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:08,401 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 [2020-04-18 03:09:08,402 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:08,418 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:08,419 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:08,419 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:39 [2020-04-18 03:09:08,560 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:08,561 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 [2020-04-18 03:09:08,561 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:08,567 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:08,567 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:09:08,567 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-18 03:09:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:08,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:08,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 39 [2020-04-18 03:09:08,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486913024] [2020-04-18 03:09:08,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-04-18 03:09:08,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:08,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-04-18 03:09:08,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 03:09:08,649 INFO L87 Difference]: Start difference. First operand 581 states and 1289 transitions. Second operand 40 states. [2020-04-18 03:09:09,872 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-04-18 03:09:10,148 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-04-18 03:09:10,653 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-04-18 03:09:11,231 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-04-18 03:09:12,210 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-04-18 03:09:13,091 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-04-18 03:09:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:14,660 INFO L93 Difference]: Finished difference Result 641 states and 1405 transitions. [2020-04-18 03:09:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-04-18 03:09:14,660 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 30 [2020-04-18 03:09:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:14,664 INFO L225 Difference]: With dead ends: 641 [2020-04-18 03:09:14,664 INFO L226 Difference]: Without dead ends: 631 [2020-04-18 03:09:14,665 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=731, Invalid=4671, Unknown=0, NotChecked=0, Total=5402 [2020-04-18 03:09:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-04-18 03:09:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 580. [2020-04-18 03:09:14,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-04-18 03:09:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1287 transitions. [2020-04-18 03:09:14,672 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1287 transitions. Word has length 30 [2020-04-18 03:09:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:14,672 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 1287 transitions. [2020-04-18 03:09:14,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-04-18 03:09:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1287 transitions. [2020-04-18 03:09:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:09:14,673 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:14,673 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:14,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:14,879 INFO L427 AbstractCegarLoop]: === Iteration 34 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:09:14,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:14,880 INFO L82 PathProgramCache]: Analyzing trace with hash 86820262, now seen corresponding path program 11 times [2020-04-18 03:09:14,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:14,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19313254] [2020-04-18 03:09:14,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:15,655 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2020-04-18 03:09:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:16,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19313254] [2020-04-18 03:09:16,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754565043] [2020-04-18 03:09:16,329 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 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 [2020-04-18 03:09:16,403 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-04-18 03:09:16,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:09:16,405 WARN L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 124 conjunts are in the unsatisfiable core [2020-04-18 03:09:16,406 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:16,418 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2020-04-18 03:09:16,419 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:16,437 INFO L619 ElimStorePlain]: treesize reduction 13, result has 77.6 percent of original size [2020-04-18 03:09:16,442 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:16,443 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:09:16,443 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:16,455 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:16,455 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:16,456 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:09:16,779 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:16,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:16,781 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:16,804 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:16,805 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:09:16,806 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:16,869 INFO L619 ElimStorePlain]: treesize reduction 46, result has 55.8 percent of original size [2020-04-18 03:09:16,870 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:16,870 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:71, output treesize:49 [2020-04-18 03:09:16,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:16,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:16,996 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,009 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:17,011 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,012 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 [2020-04-18 03:09:17,013 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,018 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,044 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:17,046 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,047 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 [2020-04-18 03:09:17,048 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,053 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 [2020-04-18 03:09:17,054 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,074 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:17,075 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:17,075 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:251, output treesize:43 [2020-04-18 03:09:17,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:17,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:17,399 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,407 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:17,411 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,415 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 54 treesize of output 44 [2020-04-18 03:09:17,416 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,423 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,431 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:17,434 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,437 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 66 treesize of output 52 [2020-04-18 03:09:17,438 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,443 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:17,444 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 53 treesize of output 43 [2020-04-18 03:09:17,444 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,465 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:17,466 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:17,466 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:231, output treesize:43 [2020-04-18 03:09:17,627 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:17,628 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 [2020-04-18 03:09:17,629 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,643 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:17,644 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:17,644 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:39 [2020-04-18 03:09:17,781 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:17,782 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 [2020-04-18 03:09:17,783 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,789 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:17,789 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:09:17,790 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:7 [2020-04-18 03:09:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:17,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:17,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 38 [2020-04-18 03:09:17,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546566719] [2020-04-18 03:09:17,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-18 03:09:17,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:17,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-18 03:09:17,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:09:17,870 INFO L87 Difference]: Start difference. First operand 580 states and 1287 transitions. Second operand 39 states. [2020-04-18 03:09:18,549 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-04-18 03:09:18,903 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-04-18 03:09:19,200 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-04-18 03:09:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:22,761 INFO L93 Difference]: Finished difference Result 635 states and 1396 transitions. [2020-04-18 03:09:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-18 03:09:22,762 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 30 [2020-04-18 03:09:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:22,765 INFO L225 Difference]: With dead ends: 635 [2020-04-18 03:09:22,766 INFO L226 Difference]: Without dead ends: 625 [2020-04-18 03:09:22,766 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=388, Invalid=3518, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 03:09:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-04-18 03:09:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 589. [2020-04-18 03:09:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-04-18 03:09:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1308 transitions. [2020-04-18 03:09:22,774 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1308 transitions. Word has length 30 [2020-04-18 03:09:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:22,774 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 1308 transitions. [2020-04-18 03:09:22,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-04-18 03:09:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1308 transitions. [2020-04-18 03:09:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:09:22,775 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:22,775 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:22,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:22,976 INFO L427 AbstractCegarLoop]: === Iteration 35 === [reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:09:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1435825986, now seen corresponding path program 12 times [2020-04-18 03:09:22,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:22,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474754810] [2020-04-18 03:09:22,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:24,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474754810] [2020-04-18 03:09:24,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2797757] [2020-04-18 03:09:24,309 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 [2020-04-18 03:09:24,389 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-18 03:09:24,389 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:09:24,393 INFO L264 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 95 conjunts are in the unsatisfiable core [2020-04-18 03:09:24,394 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:24,408 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-04-18 03:09:24,409 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-04-18 03:09:24,435 INFO L619 ElimStorePlain]: treesize reduction 14, result has 76.3 percent of original size [2020-04-18 03:09:24,439 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:24,440 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2020-04-18 03:09:24,440 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:24,449 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:24,450 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:24,450 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:31 [2020-04-18 03:09:24,763 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:24,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:24,765 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:24,793 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:24,794 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 86 [2020-04-18 03:09:24,795 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:24,852 INFO L619 ElimStorePlain]: treesize reduction 46, result has 53.1 percent of original size [2020-04-18 03:09:24,852 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:24,852 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:65, output treesize:43 [2020-04-18 03:09:24,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:24,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:24,975 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:24,988 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:24,990 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:24,991 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 [2020-04-18 03:09:24,991 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:24,998 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:25,011 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:25,013 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:25,014 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 [2020-04-18 03:09:25,015 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,020 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:25,021 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 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 [2020-04-18 03:09:25,022 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,038 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:25,039 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:25,039 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:233, output treesize:37 [2020-04-18 03:09:25,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:25,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:25,251 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:25,259 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:25,263 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:25,266 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 66 treesize of output 52 [2020-04-18 03:09:25,267 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,282 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:25,290 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:25,293 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:25,296 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 53 treesize of output 43 [2020-04-18 03:09:25,297 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2020-04-18 03:09:25,304 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 54 treesize of output 44 [2020-04-18 03:09:25,304 INFO L539 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,320 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:25,321 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:25,321 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:213, output treesize:37 [2020-04-18 03:09:25,540 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:25,541 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 [2020-04-18 03:09:25,542 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,572 INFO L619 ElimStorePlain]: treesize reduction 16, result has 69.2 percent of original size [2020-04-18 03:09:25,573 INFO L539 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-04-18 03:09:25,573 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:48, output treesize:29 [2020-04-18 03:09:25,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:09:25,701 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:25,705 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:25,707 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 14 [2020-04-18 03:09:25,708 INFO L539 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,711 INFO L172 IndexEqualityManager]: detected equality via solver [2020-04-18 03:09:25,711 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2020-04-18 03:09:25,712 INFO L539 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,718 INFO L619 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-04-18 03:09:25,719 INFO L539 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-04-18 03:09:25,719 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:92, output treesize:7 [2020-04-18 03:09:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:25,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:25,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 37 [2020-04-18 03:09:25,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133202260] [2020-04-18 03:09:25,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-04-18 03:09:25,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:25,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-04-18 03:09:25,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1282, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 03:09:25,767 INFO L87 Difference]: Start difference. First operand 589 states and 1308 transitions. Second operand 38 states. [2020-04-18 03:09:26,440 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-04-18 03:09:26,794 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2020-04-18 03:09:27,128 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 50 Received shutdown request... [2020-04-18 03:09:28,520 WARN L209 SmtUtils]: Removed 13 from assertion stack [2020-04-18 03:09:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 03:09:28,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:28,722 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 03:09:28,727 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 03:09:28,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:09:28 BasicIcfg [2020-04-18 03:09:28,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 03:09:28,729 INFO L168 Benchmark]: Toolchain (without parser) took 245335.61 ms. Allocated memory was 138.9 MB in the beginning and 325.1 MB in the end (delta: 186.1 MB). Free memory was 101.9 MB in the beginning and 74.2 MB in the end (delta: 27.7 MB). Peak memory consumption was 213.9 MB. Max. memory is 7.1 GB. [2020-04-18 03:09:28,729 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 03:09:28,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.08 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 148.0 MB in the end (delta: -48.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-04-18 03:09:28,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.60 ms. Allocated memory is still 202.4 MB. Free memory was 148.0 MB in the beginning and 145.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 03:09:28,730 INFO L168 Benchmark]: Boogie Preprocessor took 58.28 ms. Allocated memory is still 202.4 MB. Free memory was 145.3 MB in the beginning and 144.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:09:28,730 INFO L168 Benchmark]: RCFGBuilder took 599.47 ms. Allocated memory is still 202.4 MB. Free memory was 144.0 MB in the beginning and 113.1 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-04-18 03:09:28,730 INFO L168 Benchmark]: TraceAbstraction took 243795.82 ms. Allocated memory was 202.4 MB in the beginning and 325.1 MB in the end (delta: 122.7 MB). Free memory was 113.1 MB in the beginning and 74.2 MB in the end (delta: 38.9 MB). Peak memory consumption was 161.6 MB. Max. memory is 7.1 GB. [2020-04-18 03:09:28,731 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 801.08 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 148.0 MB in the end (delta: -48.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.60 ms. Allocated memory is still 202.4 MB. Free memory was 148.0 MB in the beginning and 145.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.28 ms. Allocated memory is still 202.4 MB. Free memory was 145.3 MB in the beginning and 144.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 599.47 ms. Allocated memory is still 202.4 MB. Free memory was 144.0 MB in the beginning and 113.1 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243795.82 ms. Allocated memory was 202.4 MB in the beginning and 325.1 MB in the end (delta: 122.7 MB). Free memory was 113.1 MB in the beginning and 74.2 MB in the end (delta: 38.9 MB). Peak memory consumption was 161.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.7s, 122 ProgramPointsBefore, 31 ProgramPointsAfterwards, 128 TransitionsBefore, 34 TransitionsAfterwards, 4968 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 3 ChoiceCompositions, 2658 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 5914 CheckedPairsTotal, 112 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 (589states) and FLOYD_HOARE automaton (currently 18 states, 38 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 53 for 49ms.. - TimeoutResultAtElement [Line: 825]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 825). Cancelled while BasicCegarLoop was constructing difference of abstraction (589states) and FLOYD_HOARE automaton (currently 18 states, 38 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 53 for 49ms.. - TimeoutResultAtElement [Line: 826]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 826). Cancelled while BasicCegarLoop was constructing difference of abstraction (589states) and FLOYD_HOARE automaton (currently 18 states, 38 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 53 for 49ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 243.6s, OverallIterations: 35, TraceHistogramMax: 3, AutomataDifference: 166.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 1003 SDtfs, 5530 SDslu, 7020 SDs, 0 SdLazy, 51168 SolverSat, 2107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1987 GetRequests, 233 SyntacticMatches, 67 SemanticMatches, 1686 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32028 ImplicationChecksByTransitivity, 153.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=589occurred in iteration=34, 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, 34 MinimizatonAttempts, 2664 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 66.2s InterpolantComputationTime, 1343 NumberOfCodeBlocks, 1343 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 1286 ConstructedInterpolants, 444 QuantifiedInterpolants, 1233390 SizeOfPredicates, 928 NumberOfNonLiveVariables, 3733 ConjunctsInSsa, 2140 ConjunctsInUnsatCore, 57 InterpolantComputations, 13 PerfectInterpolantSequences, 57/366 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