/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:53:32,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:53:32,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:53:32,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:53:32,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:53:32,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:53:32,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:53:32,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:53:32,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:53:32,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:53:32,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:53:32,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:53:32,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:53:32,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:53:32,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:53:32,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:53:32,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:53:32,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:53:32,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:53:32,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:53:32,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:53:32,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:53:32,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:53:32,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:53:32,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:53:32,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:53:32,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:53:32,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:53:32,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:53:32,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:53:32,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:53:32,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:53:32,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:53:32,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:53:32,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:53:32,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:53:32,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:53:32,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:53:32,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:53:32,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:53:32,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:53:32,759 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:53:32,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:53:32,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:53:32,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:53:32,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:53:32,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:53:32,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:53:32,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:53:32,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:53:32,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:53:32,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:53:32,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:53:32,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:53:32,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:53:32,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:53:32,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:53:32,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:53:32,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:53:32,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:53:32,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:53:32,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:53:32,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:53:33,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:53:33,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:53:33,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:53:33,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:53:33,228 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:53:33,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2020-12-23 13:53:33,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f54d61082/498601d1e6054db089714e3282382421/FLAGea7a403ee [2020-12-23 13:53:34,147 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:53:34,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2020-12-23 13:53:34,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f54d61082/498601d1e6054db089714e3282382421/FLAGea7a403ee [2020-12-23 13:53:34,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f54d61082/498601d1e6054db089714e3282382421 [2020-12-23 13:53:34,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:53:34,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:53:34,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:53:34,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:53:34,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:53:34,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:53:34" (1/1) ... [2020-12-23 13:53:34,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36624379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:34, skipping insertion in model container [2020-12-23 13:53:34,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:53:34" (1/1) ... [2020-12-23 13:53:34,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:53:34,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:53:34,757 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~r,],offset]],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[#t~mem8,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~r,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],StructAccessExpression[IdentifierExpression[~r,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~r,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],StructAccessExpression[IdentifierExpression[~r,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~val~0,] [2020-12-23 13:53:35,121 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39095,39108] left hand side expression in assignment: lhs: VariableLHS[~last~0,] [2020-12-23 13:53:35,130 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39180,39193] [2020-12-23 13:53:35,133 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39232,39245] [2020-12-23 13:53:35,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:53:35,157 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:53:35,172 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~r,],offset]],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[#t~mem8,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~r,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],StructAccessExpression[IdentifierExpression[~r,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~r,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~r,],base],StructAccessExpression[IdentifierExpression[~r,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~val~0,] [2020-12-23 13:53:35,203 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39095,39108] left hand side expression in assignment: lhs: VariableLHS[~last~0,] [2020-12-23 13:53:35,204 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39180,39193] [2020-12-23 13:53:35,205 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39232,39245] [2020-12-23 13:53:35,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:53:35,381 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:53:35,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35 WrapperNode [2020-12-23 13:53:35,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:53:35,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:53:35,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:53:35,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:53:35,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:53:35,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:53:35,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:53:35,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:53:35,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... [2020-12-23 13:53:35,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:53:35,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:53:35,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:53:35,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:53:35,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:53:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2020-12-23 13:53:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2020-12-23 13:53:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:53:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:53:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 13:53:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:53:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:53:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:53:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:53:35,649 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:53:36,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:53:36,219 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-23 13:53:36,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:53:36 BoogieIcfgContainer [2020-12-23 13:53:36,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:53:36,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:53:36,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:53:36,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:53:36,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:53:34" (1/3) ... [2020-12-23 13:53:36,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bee49b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:53:36, skipping insertion in model container [2020-12-23 13:53:36,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:53:35" (2/3) ... [2020-12-23 13:53:36,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bee49b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:53:36, skipping insertion in model container [2020-12-23 13:53:36,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:53:36" (3/3) ... [2020-12-23 13:53:36,239 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2020-12-23 13:53:36,248 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:53:36,249 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:53:36,254 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 13:53:36,256 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:53:36,349 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,350 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,351 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,351 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,351 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,352 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,352 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,352 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,353 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,353 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,356 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,356 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,356 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,356 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,356 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,357 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,357 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,358 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,358 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,359 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,359 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,359 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,360 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,360 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,362 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,362 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,362 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,363 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,364 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,365 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,365 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,365 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,365 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,365 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,366 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,366 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,367 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,367 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,368 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,368 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,368 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,368 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,369 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,370 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,371 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,372 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,372 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,372 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,373 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,373 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,373 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,373 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,374 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,375 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,375 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,375 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,375 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,376 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,376 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,376 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,376 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,376 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,377 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,377 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,377 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,377 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,378 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,378 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,378 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,379 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,379 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,380 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,381 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,381 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,382 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,382 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,382 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,383 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,383 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,383 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,383 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,384 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,384 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,384 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,384 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,385 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,386 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,386 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,386 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,386 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,387 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,387 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,387 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,387 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,387 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,388 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,388 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,388 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,388 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,389 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,389 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,391 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,395 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,395 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,396 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,397 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,402 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,402 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,403 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,404 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,405 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,405 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,405 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,406 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,406 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,406 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,406 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,406 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,407 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,407 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,407 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,407 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,407 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,408 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,408 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,408 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,408 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,408 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,409 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,409 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,409 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,409 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,409 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,410 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,410 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,410 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,410 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,410 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,411 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,411 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,411 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,411 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,412 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,412 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,412 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,412 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,413 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,413 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,413 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,413 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,413 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,414 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,414 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,414 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,415 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,415 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,415 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,415 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,415 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,416 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,416 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,416 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,416 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,416 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,417 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,417 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,417 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,417 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,417 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,418 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,420 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,420 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,421 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,421 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,421 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,421 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,422 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,422 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,422 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,422 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,422 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,423 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,423 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,423 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,423 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,424 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,424 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,424 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,424 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,425 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,425 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,425 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,425 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,426 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,426 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,426 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,426 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,427 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,427 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,427 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,427 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,428 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,428 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,428 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,428 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,428 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,429 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,429 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,430 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,430 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,430 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,430 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,431 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,431 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,431 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,431 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,431 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,432 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,432 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,432 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,432 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,432 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,433 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,433 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,433 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,433 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,433 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,434 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,436 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,441 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,441 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,441 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,442 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,443 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,444 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,444 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,444 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,444 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,445 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,445 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,445 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,445 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,446 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,454 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,454 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,454 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,455 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,455 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,455 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,455 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,455 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,456 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,456 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,456 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,457 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,457 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,461 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,461 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,461 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,462 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,462 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,462 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,462 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,462 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,463 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,463 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,463 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,463 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,463 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,464 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,464 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,464 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,464 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,464 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,465 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,465 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,465 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,465 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,465 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,466 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,466 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,466 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,466 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,466 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,467 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:53:36,484 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-12-23 13:53:36,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 13:53:36,532 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:53:36,532 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:53:36,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:53:36,533 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:53:36,533 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:53:36,533 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:53:36,533 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:53:36,533 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:53:36,549 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:53:36,551 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 286 flow [2020-12-23 13:53:36,555 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 286 flow [2020-12-23 13:53:36,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 286 flow [2020-12-23 13:53:36,637 INFO L129 PetriNetUnfolder]: 10/138 cut-off events. [2020-12-23 13:53:36,637 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-12-23 13:53:36,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 138 events. 10/138 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 243 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2020-12-23 13:53:36,675 INFO L116 LiptonReduction]: Number of co-enabled transitions 4968 [2020-12-23 13:53:37,514 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:53:41,761 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2020-12-23 13:53:41,918 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-12-23 13:53:42,292 WARN L197 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2020-12-23 13:53:42,437 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-12-23 13:53:42,712 INFO L131 LiptonReduction]: Checked pairs total: 6813 [2020-12-23 13:53:42,712 INFO L133 LiptonReduction]: Total number of compositions: 136 [2020-12-23 13:53:42,720 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 33 transitions, 74 flow [2020-12-23 13:53:42,736 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 130 states. [2020-12-23 13:53:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-12-23 13:53:42,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 13:53:42,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:42,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 13:53:42,747 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash 530358716, now seen corresponding path program 1 times [2020-12-23 13:53:42,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:42,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807753241] [2020-12-23 13:53:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:42,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807753241] [2020-12-23 13:53:42,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:42,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:53:42,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383119517] [2020-12-23 13:53:42,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:53:42,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:43,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:53:43,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:53:43,004 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 2 states. [2020-12-23 13:53:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:43,036 INFO L93 Difference]: Finished difference Result 130 states and 279 transitions. [2020-12-23 13:53:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:53:43,038 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-23 13:53:43,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:43,052 INFO L225 Difference]: With dead ends: 130 [2020-12-23 13:53:43,052 INFO L226 Difference]: Without dead ends: 119 [2020-12-23 13:53:43,053 INFO L677 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 [2020-12-23 13:53:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-23 13:53:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-12-23 13:53:43,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-23 13:53:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 258 transitions. [2020-12-23 13:53:43,114 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 258 transitions. Word has length 5 [2020-12-23 13:53:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:43,114 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 258 transitions. [2020-12-23 13:53:43,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:53:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 258 transitions. [2020-12-23 13:53:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 13:53:43,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:43,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 13:53:43,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:53:43,116 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:43,117 INFO L82 PathProgramCache]: Analyzing trace with hash -738752377, now seen corresponding path program 1 times [2020-12-23 13:53:43,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:43,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215636789] [2020-12-23 13:53:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:43,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215636789] [2020-12-23 13:53:43,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:43,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:53:43,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531517673] [2020-12-23 13:53:43,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:53:43,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:43,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:53:43,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:53:43,209 INFO L87 Difference]: Start difference. First operand 119 states and 258 transitions. Second operand 3 states. [2020-12-23 13:53:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:43,234 INFO L93 Difference]: Finished difference Result 191 states and 419 transitions. [2020-12-23 13:53:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:53:43,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-23 13:53:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:43,238 INFO L225 Difference]: With dead ends: 191 [2020-12-23 13:53:43,238 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 13:53:43,239 INFO L677 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 [2020-12-23 13:53:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 13:53:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 146. [2020-12-23 13:53:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-23 13:53:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 324 transitions. [2020-12-23 13:53:43,263 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 324 transitions. Word has length 6 [2020-12-23 13:53:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:43,263 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 324 transitions. [2020-12-23 13:53:43,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:53:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 324 transitions. [2020-12-23 13:53:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:53:43,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:43,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:43,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:53:43,265 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:43,266 INFO L82 PathProgramCache]: Analyzing trace with hash -869667689, now seen corresponding path program 1 times [2020-12-23 13:53:43,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:43,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10566324] [2020-12-23 13:53:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:43,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10566324] [2020-12-23 13:53:43,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:43,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 13:53:43,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206459127] [2020-12-23 13:53:43,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:53:43,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:53:43,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:53:43,555 INFO L87 Difference]: Start difference. First operand 146 states and 324 transitions. Second operand 7 states. [2020-12-23 13:53:43,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:43,919 INFO L93 Difference]: Finished difference Result 173 states and 374 transitions. [2020-12-23 13:53:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:53:43,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-23 13:53:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:43,923 INFO L225 Difference]: With dead ends: 173 [2020-12-23 13:53:43,923 INFO L226 Difference]: Without dead ends: 154 [2020-12-23 13:53:43,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:53:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-23 13:53:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-12-23 13:53:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-23 13:53:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 342 transitions. [2020-12-23 13:53:43,943 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 342 transitions. Word has length 10 [2020-12-23 13:53:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:43,944 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 342 transitions. [2020-12-23 13:53:43,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:53:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 342 transitions. [2020-12-23 13:53:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:53:43,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:43,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:43,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:53:43,946 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash 348150037, now seen corresponding path program 1 times [2020-12-23 13:53:43,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:43,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570640016] [2020-12-23 13:53:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:44,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570640016] [2020-12-23 13:53:44,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:44,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:53:44,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905976692] [2020-12-23 13:53:44,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:53:44,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:44,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:53:44,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:53:44,375 INFO L87 Difference]: Start difference. First operand 154 states and 342 transitions. Second operand 12 states. [2020-12-23 13:53:45,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:45,169 INFO L93 Difference]: Finished difference Result 183 states and 398 transitions. [2020-12-23 13:53:45,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 13:53:45,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-12-23 13:53:45,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:45,172 INFO L225 Difference]: With dead ends: 183 [2020-12-23 13:53:45,172 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 13:53:45,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-12-23 13:53:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 13:53:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2020-12-23 13:53:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-23 13:53:45,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 360 transitions. [2020-12-23 13:53:45,192 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 360 transitions. Word has length 16 [2020-12-23 13:53:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:45,193 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 360 transitions. [2020-12-23 13:53:45,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:53:45,193 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 360 transitions. [2020-12-23 13:53:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:53:45,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:45,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:45,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:53:45,196 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:45,198 INFO L82 PathProgramCache]: Analyzing trace with hash -483792453, now seen corresponding path program 2 times [2020-12-23 13:53:45,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:45,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568136065] [2020-12-23 13:53:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:45,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568136065] [2020-12-23 13:53:45,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:45,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:53:45,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661478634] [2020-12-23 13:53:45,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:53:45,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:45,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:53:45,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:53:45,632 INFO L87 Difference]: Start difference. First operand 163 states and 360 transitions. Second operand 12 states. [2020-12-23 13:53:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:46,539 INFO L93 Difference]: Finished difference Result 200 states and 435 transitions. [2020-12-23 13:53:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 13:53:46,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-12-23 13:53:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:46,543 INFO L225 Difference]: With dead ends: 200 [2020-12-23 13:53:46,543 INFO L226 Difference]: Without dead ends: 192 [2020-12-23 13:53:46,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-12-23 13:53:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-12-23 13:53:46,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 170. [2020-12-23 13:53:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-23 13:53:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 377 transitions. [2020-12-23 13:53:46,571 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 377 transitions. Word has length 16 [2020-12-23 13:53:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:46,572 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 377 transitions. [2020-12-23 13:53:46,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:53:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 377 transitions. [2020-12-23 13:53:46,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:53:46,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:46,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:46,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:53:46,574 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:46,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1411218197, now seen corresponding path program 3 times [2020-12-23 13:53:46,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:46,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020056112] [2020-12-23 13:53:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:46,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020056112] [2020-12-23 13:53:46,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:46,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:53:46,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428677744] [2020-12-23 13:53:46,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:53:46,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:46,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:53:46,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:53:46,964 INFO L87 Difference]: Start difference. First operand 170 states and 377 transitions. Second operand 12 states. [2020-12-23 13:53:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:48,233 INFO L93 Difference]: Finished difference Result 201 states and 432 transitions. [2020-12-23 13:53:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 13:53:48,234 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-12-23 13:53:48,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:48,236 INFO L225 Difference]: With dead ends: 201 [2020-12-23 13:53:48,236 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 13:53:48,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=197, Invalid=453, Unknown=0, NotChecked=0, Total=650 [2020-12-23 13:53:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 13:53:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 175. [2020-12-23 13:53:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-23 13:53:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 384 transitions. [2020-12-23 13:53:48,247 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 384 transitions. Word has length 16 [2020-12-23 13:53:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:48,247 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 384 transitions. [2020-12-23 13:53:48,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:53:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 384 transitions. [2020-12-23 13:53:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:53:48,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:48,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:48,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:53:48,249 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:48,250 INFO L82 PathProgramCache]: Analyzing trace with hash -801537283, now seen corresponding path program 4 times [2020-12-23 13:53:48,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:48,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624504297] [2020-12-23 13:53:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:48,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624504297] [2020-12-23 13:53:48,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:48,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:53:48,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503982700] [2020-12-23 13:53:48,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:53:48,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:48,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:53:48,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:53:48,646 INFO L87 Difference]: Start difference. First operand 175 states and 384 transitions. Second operand 12 states. [2020-12-23 13:53:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:49,435 INFO L93 Difference]: Finished difference Result 200 states and 432 transitions. [2020-12-23 13:53:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 13:53:49,436 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-12-23 13:53:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:49,438 INFO L225 Difference]: With dead ends: 200 [2020-12-23 13:53:49,438 INFO L226 Difference]: Without dead ends: 192 [2020-12-23 13:53:49,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-12-23 13:53:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-12-23 13:53:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2020-12-23 13:53:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-23 13:53:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 413 transitions. [2020-12-23 13:53:49,452 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 413 transitions. Word has length 16 [2020-12-23 13:53:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:49,453 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 413 transitions. [2020-12-23 13:53:49,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:53:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 413 transitions. [2020-12-23 13:53:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:53:49,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:49,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:49,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:53:49,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:49,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1093473367, now seen corresponding path program 5 times [2020-12-23 13:53:49,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:49,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966439928] [2020-12-23 13:53:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:49,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966439928] [2020-12-23 13:53:49,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:49,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:53:49,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450157912] [2020-12-23 13:53:49,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:53:49,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:49,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:53:49,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:53:49,921 INFO L87 Difference]: Start difference. First operand 188 states and 413 transitions. Second operand 12 states. [2020-12-23 13:53:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:51,355 INFO L93 Difference]: Finished difference Result 216 states and 462 transitions. [2020-12-23 13:53:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 13:53:51,356 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-12-23 13:53:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:51,358 INFO L225 Difference]: With dead ends: 216 [2020-12-23 13:53:51,358 INFO L226 Difference]: Without dead ends: 206 [2020-12-23 13:53:51,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2020-12-23 13:53:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-23 13:53:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 178. [2020-12-23 13:53:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 13:53:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 393 transitions. [2020-12-23 13:53:51,371 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 393 transitions. Word has length 16 [2020-12-23 13:53:51,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:51,372 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 393 transitions. [2020-12-23 13:53:51,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:53:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 393 transitions. [2020-12-23 13:53:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:53:51,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:51,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:51,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:53:51,375 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:51,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:51,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1931279977, now seen corresponding path program 6 times [2020-12-23 13:53:51,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:51,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708720078] [2020-12-23 13:53:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:51,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708720078] [2020-12-23 13:53:51,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:51,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 13:53:51,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464663725] [2020-12-23 13:53:51,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:53:51,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:51,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:53:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:53:51,698 INFO L87 Difference]: Start difference. First operand 178 states and 393 transitions. Second operand 11 states. [2020-12-23 13:53:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:52,663 INFO L93 Difference]: Finished difference Result 196 states and 422 transitions. [2020-12-23 13:53:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 13:53:52,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-12-23 13:53:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:52,666 INFO L225 Difference]: With dead ends: 196 [2020-12-23 13:53:52,666 INFO L226 Difference]: Without dead ends: 186 [2020-12-23 13:53:52,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-12-23 13:53:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-23 13:53:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 174. [2020-12-23 13:53:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-23 13:53:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 385 transitions. [2020-12-23 13:53:52,677 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 385 transitions. Word has length 16 [2020-12-23 13:53:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:52,678 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 385 transitions. [2020-12-23 13:53:52,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:53:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 385 transitions. [2020-12-23 13:53:52,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:53:52,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:52,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:52,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:53:52,680 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:52,682 INFO L82 PathProgramCache]: Analyzing trace with hash -400480434, now seen corresponding path program 1 times [2020-12-23 13:53:52,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:52,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15516486] [2020-12-23 13:53:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:53,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15516486] [2020-12-23 13:53:53,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:53,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-23 13:53:53,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115888181] [2020-12-23 13:53:53,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 13:53:53,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:53,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 13:53:53,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:53:53,328 INFO L87 Difference]: Start difference. First operand 174 states and 385 transitions. Second operand 15 states. [2020-12-23 13:53:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:54,659 INFO L93 Difference]: Finished difference Result 250 states and 552 transitions. [2020-12-23 13:53:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 13:53:54,660 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-12-23 13:53:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:54,662 INFO L225 Difference]: With dead ends: 250 [2020-12-23 13:53:54,662 INFO L226 Difference]: Without dead ends: 250 [2020-12-23 13:53:54,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-12-23 13:53:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-23 13:53:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 227. [2020-12-23 13:53:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-23 13:53:54,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 503 transitions. [2020-12-23 13:53:54,671 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 503 transitions. Word has length 18 [2020-12-23 13:53:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:54,673 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 503 transitions. [2020-12-23 13:53:54,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 13:53:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 503 transitions. [2020-12-23 13:53:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:53:54,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:54,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:54,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:53:54,676 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:54,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:54,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1033296268, now seen corresponding path program 2 times [2020-12-23 13:53:54,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:54,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775095576] [2020-12-23 13:53:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:55,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775095576] [2020-12-23 13:53:55,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:55,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-23 13:53:55,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865241975] [2020-12-23 13:53:55,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 13:53:55,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:55,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 13:53:55,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:53:55,337 INFO L87 Difference]: Start difference. First operand 227 states and 503 transitions. Second operand 15 states. [2020-12-23 13:53:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:56,633 INFO L93 Difference]: Finished difference Result 381 states and 839 transitions. [2020-12-23 13:53:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 13:53:56,634 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-12-23 13:53:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:56,637 INFO L225 Difference]: With dead ends: 381 [2020-12-23 13:53:56,637 INFO L226 Difference]: Without dead ends: 381 [2020-12-23 13:53:56,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2020-12-23 13:53:56,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-12-23 13:53:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 233. [2020-12-23 13:53:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-12-23 13:53:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 515 transitions. [2020-12-23 13:53:56,648 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 515 transitions. Word has length 18 [2020-12-23 13:53:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:56,648 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 515 transitions. [2020-12-23 13:53:56,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 13:53:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 515 transitions. [2020-12-23 13:53:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:53:56,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:56,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:56,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:53:56,650 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:56,650 INFO L82 PathProgramCache]: Analyzing trace with hash -994195122, now seen corresponding path program 3 times [2020-12-23 13:53:56,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:56,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051862487] [2020-12-23 13:53:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:57,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051862487] [2020-12-23 13:53:57,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:57,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-23 13:53:57,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884663167] [2020-12-23 13:53:57,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 13:53:57,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:57,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 13:53:57,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:53:57,195 INFO L87 Difference]: Start difference. First operand 233 states and 515 transitions. Second operand 16 states. [2020-12-23 13:53:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:53:59,047 INFO L93 Difference]: Finished difference Result 398 states and 886 transitions. [2020-12-23 13:53:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 13:53:59,047 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-12-23 13:53:59,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:53:59,053 INFO L225 Difference]: With dead ends: 398 [2020-12-23 13:53:59,053 INFO L226 Difference]: Without dead ends: 398 [2020-12-23 13:53:59,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2020-12-23 13:53:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-23 13:53:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 238. [2020-12-23 13:53:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-23 13:53:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 526 transitions. [2020-12-23 13:53:59,064 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 526 transitions. Word has length 18 [2020-12-23 13:53:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:53:59,064 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 526 transitions. [2020-12-23 13:53:59,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 13:53:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 526 transitions. [2020-12-23 13:53:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:53:59,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:53:59,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:53:59,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 13:53:59,066 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:53:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:53:59,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1443399882, now seen corresponding path program 4 times [2020-12-23 13:53:59,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:53:59,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138060745] [2020-12-23 13:53:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:53:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:53:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:53:59,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138060745] [2020-12-23 13:53:59,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:53:59,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-23 13:53:59,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663293096] [2020-12-23 13:53:59,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 13:53:59,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:53:59,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 13:53:59,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:53:59,697 INFO L87 Difference]: Start difference. First operand 238 states and 526 transitions. Second operand 15 states. [2020-12-23 13:54:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:00,992 INFO L93 Difference]: Finished difference Result 311 states and 687 transitions. [2020-12-23 13:54:00,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 13:54:00,992 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-12-23 13:54:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:00,995 INFO L225 Difference]: With dead ends: 311 [2020-12-23 13:54:00,995 INFO L226 Difference]: Without dead ends: 311 [2020-12-23 13:54:00,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2020-12-23 13:54:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-23 13:54:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 239. [2020-12-23 13:54:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-23 13:54:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 529 transitions. [2020-12-23 13:54:01,005 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 529 transitions. Word has length 18 [2020-12-23 13:54:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:01,006 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 529 transitions. [2020-12-23 13:54:01,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 13:54:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 529 transitions. [2020-12-23 13:54:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:54:01,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:01,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:01,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 13:54:01,007 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:01,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1404298736, now seen corresponding path program 5 times [2020-12-23 13:54:01,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:01,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190372298] [2020-12-23 13:54:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:01,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190372298] [2020-12-23 13:54:01,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:54:01,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-23 13:54:01,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465270247] [2020-12-23 13:54:01,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 13:54:01,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:01,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 13:54:01,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:54:01,543 INFO L87 Difference]: Start difference. First operand 239 states and 529 transitions. Second operand 16 states. [2020-12-23 13:54:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:03,392 INFO L93 Difference]: Finished difference Result 457 states and 1018 transitions. [2020-12-23 13:54:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 13:54:03,393 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-12-23 13:54:03,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:03,398 INFO L225 Difference]: With dead ends: 457 [2020-12-23 13:54:03,398 INFO L226 Difference]: Without dead ends: 457 [2020-12-23 13:54:03,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2020-12-23 13:54:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-12-23 13:54:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 232. [2020-12-23 13:54:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-23 13:54:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 514 transitions. [2020-12-23 13:54:03,410 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 514 transitions. Word has length 18 [2020-12-23 13:54:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:03,411 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 514 transitions. [2020-12-23 13:54:03,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 13:54:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 514 transitions. [2020-12-23 13:54:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:54:03,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:03,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:03,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 13:54:03,412 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:03,413 INFO L82 PathProgramCache]: Analyzing trace with hash -499402928, now seen corresponding path program 6 times [2020-12-23 13:54:03,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:03,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781786196] [2020-12-23 13:54:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:04,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781786196] [2020-12-23 13:54:04,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:54:04,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-23 13:54:04,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199679170] [2020-12-23 13:54:04,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 13:54:04,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:04,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 13:54:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:54:04,041 INFO L87 Difference]: Start difference. First operand 232 states and 514 transitions. Second operand 16 states. [2020-12-23 13:54:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:05,548 INFO L93 Difference]: Finished difference Result 304 states and 667 transitions. [2020-12-23 13:54:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 13:54:05,548 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-12-23 13:54:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:05,551 INFO L225 Difference]: With dead ends: 304 [2020-12-23 13:54:05,552 INFO L226 Difference]: Without dead ends: 304 [2020-12-23 13:54:05,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2020-12-23 13:54:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-12-23 13:54:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 229. [2020-12-23 13:54:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-12-23 13:54:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 501 transitions. [2020-12-23 13:54:05,560 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 501 transitions. Word has length 18 [2020-12-23 13:54:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:05,561 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 501 transitions. [2020-12-23 13:54:05,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 13:54:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 501 transitions. [2020-12-23 13:54:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:54:05,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:05,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:05,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 13:54:05,563 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:05,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1858065982, now seen corresponding path program 7 times [2020-12-23 13:54:05,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:05,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794124577] [2020-12-23 13:54:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:06,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794124577] [2020-12-23 13:54:06,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:54:06,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 13:54:06,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111504504] [2020-12-23 13:54:06,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 13:54:06,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:06,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 13:54:06,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:54:06,040 INFO L87 Difference]: Start difference. First operand 229 states and 501 transitions. Second operand 14 states. [2020-12-23 13:54:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:07,447 INFO L93 Difference]: Finished difference Result 411 states and 917 transitions. [2020-12-23 13:54:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 13:54:07,448 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2020-12-23 13:54:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:07,452 INFO L225 Difference]: With dead ends: 411 [2020-12-23 13:54:07,452 INFO L226 Difference]: Without dead ends: 411 [2020-12-23 13:54:07,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2020-12-23 13:54:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-12-23 13:54:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 235. [2020-12-23 13:54:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-23 13:54:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 514 transitions. [2020-12-23 13:54:07,462 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 514 transitions. Word has length 18 [2020-12-23 13:54:07,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:07,462 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 514 transitions. [2020-12-23 13:54:07,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 13:54:07,462 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 514 transitions. [2020-12-23 13:54:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:54:07,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:07,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:07,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 13:54:07,464 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:07,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1065131066, now seen corresponding path program 8 times [2020-12-23 13:54:07,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:07,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868943204] [2020-12-23 13:54:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:08,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868943204] [2020-12-23 13:54:08,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:54:08,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-23 13:54:08,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640283380] [2020-12-23 13:54:08,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 13:54:08,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:08,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 13:54:08,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:54:08,080 INFO L87 Difference]: Start difference. First operand 235 states and 514 transitions. Second operand 16 states. [2020-12-23 13:54:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:09,853 INFO L93 Difference]: Finished difference Result 342 states and 755 transitions. [2020-12-23 13:54:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 13:54:09,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-12-23 13:54:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:09,856 INFO L225 Difference]: With dead ends: 342 [2020-12-23 13:54:09,856 INFO L226 Difference]: Without dead ends: 342 [2020-12-23 13:54:09,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2020-12-23 13:54:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-23 13:54:09,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 235. [2020-12-23 13:54:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-23 13:54:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 514 transitions. [2020-12-23 13:54:09,866 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 514 transitions. Word has length 18 [2020-12-23 13:54:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:09,866 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 514 transitions. [2020-12-23 13:54:09,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 13:54:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 514 transitions. [2020-12-23 13:54:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:54:09,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:09,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:09,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 13:54:09,868 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:09,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1669882158, now seen corresponding path program 9 times [2020-12-23 13:54:09,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:09,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672578289] [2020-12-23 13:54:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:10,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672578289] [2020-12-23 13:54:10,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:54:10,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-23 13:54:10,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125990730] [2020-12-23 13:54:10,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 13:54:10,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:10,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 13:54:10,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:54:10,419 INFO L87 Difference]: Start difference. First operand 235 states and 514 transitions. Second operand 15 states. [2020-12-23 13:54:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:11,769 INFO L93 Difference]: Finished difference Result 309 states and 676 transitions. [2020-12-23 13:54:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 13:54:11,770 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-12-23 13:54:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:11,772 INFO L225 Difference]: With dead ends: 309 [2020-12-23 13:54:11,773 INFO L226 Difference]: Without dead ends: 309 [2020-12-23 13:54:11,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2020-12-23 13:54:11,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-12-23 13:54:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 235. [2020-12-23 13:54:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-23 13:54:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 514 transitions. [2020-12-23 13:54:11,781 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 514 transitions. Word has length 18 [2020-12-23 13:54:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:11,782 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 514 transitions. [2020-12-23 13:54:11,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 13:54:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 514 transitions. [2020-12-23 13:54:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:54:11,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:11,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:11,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 13:54:11,783 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1037066324, now seen corresponding path program 10 times [2020-12-23 13:54:11,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:11,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001297237] [2020-12-23 13:54:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:12,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001297237] [2020-12-23 13:54:12,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:54:12,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-23 13:54:12,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359538954] [2020-12-23 13:54:12,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 13:54:12,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:12,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 13:54:12,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:54:12,377 INFO L87 Difference]: Start difference. First operand 235 states and 514 transitions. Second operand 15 states. [2020-12-23 13:54:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:13,698 INFO L93 Difference]: Finished difference Result 385 states and 842 transitions. [2020-12-23 13:54:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 13:54:13,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-12-23 13:54:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:13,703 INFO L225 Difference]: With dead ends: 385 [2020-12-23 13:54:13,703 INFO L226 Difference]: Without dead ends: 385 [2020-12-23 13:54:13,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-12-23 13:54:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-12-23 13:54:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 235. [2020-12-23 13:54:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-23 13:54:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 514 transitions. [2020-12-23 13:54:13,712 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 514 transitions. Word has length 18 [2020-12-23 13:54:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:13,712 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 514 transitions. [2020-12-23 13:54:13,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 13:54:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 514 transitions. [2020-12-23 13:54:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:54:13,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:13,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:13,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 13:54:13,713 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:13,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1076167470, now seen corresponding path program 11 times [2020-12-23 13:54:13,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:13,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504850111] [2020-12-23 13:54:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:14,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504850111] [2020-12-23 13:54:14,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:54:14,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-23 13:54:14,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352523827] [2020-12-23 13:54:14,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 13:54:14,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:14,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 13:54:14,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:54:14,230 INFO L87 Difference]: Start difference. First operand 235 states and 514 transitions. Second operand 16 states. [2020-12-23 13:54:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:16,068 INFO L93 Difference]: Finished difference Result 439 states and 975 transitions. [2020-12-23 13:54:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 13:54:16,069 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2020-12-23 13:54:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:16,072 INFO L225 Difference]: With dead ends: 439 [2020-12-23 13:54:16,072 INFO L226 Difference]: Without dead ends: 439 [2020-12-23 13:54:16,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2020-12-23 13:54:16,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-12-23 13:54:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 214. [2020-12-23 13:54:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-23 13:54:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 472 transitions. [2020-12-23 13:54:16,081 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 472 transitions. Word has length 18 [2020-12-23 13:54:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:16,081 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 472 transitions. [2020-12-23 13:54:16,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 13:54:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 472 transitions. [2020-12-23 13:54:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 13:54:16,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:16,082 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:16,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 13:54:16,083 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:16,083 INFO L82 PathProgramCache]: Analyzing trace with hash 706956213, now seen corresponding path program 1 times [2020-12-23 13:54:16,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:16,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519125978] [2020-12-23 13:54:16,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:16,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519125978] [2020-12-23 13:54:16,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204810141] [2020-12-23 13:54:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:54:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:16,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 13:54:16,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:54:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:16,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:54:16,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 13:54:16,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883898109] [2020-12-23 13:54:16,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:54:16,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:16,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:54:16,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:54:16,318 INFO L87 Difference]: Start difference. First operand 214 states and 472 transitions. Second operand 5 states. [2020-12-23 13:54:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:16,354 INFO L93 Difference]: Finished difference Result 318 states and 701 transitions. [2020-12-23 13:54:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:54:16,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-23 13:54:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:16,364 INFO L225 Difference]: With dead ends: 318 [2020-12-23 13:54:16,365 INFO L226 Difference]: Without dead ends: 318 [2020-12-23 13:54:16,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:54:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-12-23 13:54:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 270. [2020-12-23 13:54:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-23 13:54:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 607 transitions. [2020-12-23 13:54:16,392 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 607 transitions. Word has length 21 [2020-12-23 13:54:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:16,392 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 607 transitions. [2020-12-23 13:54:16,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:54:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 607 transitions. [2020-12-23 13:54:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:54:16,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:16,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:16,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 13:54:16,611 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:16,612 INFO L82 PathProgramCache]: Analyzing trace with hash 72330997, now seen corresponding path program 12 times [2020-12-23 13:54:16,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:16,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539801713] [2020-12-23 13:54:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:17,385 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-12-23 13:54:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:17,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539801713] [2020-12-23 13:54:17,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476227375] [2020-12-23 13:54:17,943 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:54:18,054 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-12-23 13:54:18,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:54:18,060 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 102 conjunts are in the unsatisfiable core [2020-12-23 13:54:18,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:54:18,140 INFO L382 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 101 treesize of output 93 [2020-12-23 13:54:18,146 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:18,176 INFO L625 ElimStorePlain]: treesize reduction 14, result has 79.1 percent of original size [2020-12-23 13:54:18,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:18,192 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:54:18,194 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:18,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:18,218 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:54:18,218 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:54:19,090 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 13:54:19,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,113 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:19,140 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:19,141 INFO L382 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 [2020-12-23 13:54:19,145 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:19,204 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:54:19,207 INFO L547 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. [2020-12-23 13:54:19,207 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:54:19,411 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:54:19,414 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:19,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:19,425 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:19,428 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:54:19,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,452 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:19,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,460 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:19,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,481 INFO L382 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 [2020-12-23 13:54:19,485 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:19,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,495 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:19,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,501 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:19,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,513 INFO L382 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 67 treesize of output 54 [2020-12-23 13:54:19,515 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:19,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,524 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:19,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:19,527 INFO L382 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 [2020-12-23 13:54:19,528 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:19,544 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:19,547 INFO L547 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. [2020-12-23 13:54:19,547 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:54:20,050 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:20,051 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:54:20,063 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:20,124 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:54:20,129 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:54:20,135 INFO L547 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. [2020-12-23 13:54:20,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:54:20,244 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:54:20,247 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:20,253 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:20,254 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:54:20,255 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:54:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:20,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:54:20,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 35 [2020-12-23 13:54:20,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784347177] [2020-12-23 13:54:20,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 13:54:20,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:20,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 13:54:20,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1218, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 13:54:20,365 INFO L87 Difference]: Start difference. First operand 270 states and 607 transitions. Second operand 37 states. [2020-12-23 13:54:21,798 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-12-23 13:54:22,215 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2020-12-23 13:54:22,697 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-12-23 13:54:22,876 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-12-23 13:54:23,132 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-12-23 13:54:23,473 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2020-12-23 13:54:24,610 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-12-23 13:54:24,865 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-12-23 13:54:25,341 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-12-23 13:54:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:25,892 INFO L93 Difference]: Finished difference Result 402 states and 888 transitions. [2020-12-23 13:54:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 13:54:25,893 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 23 [2020-12-23 13:54:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:25,896 INFO L225 Difference]: With dead ends: 402 [2020-12-23 13:54:25,896 INFO L226 Difference]: Without dead ends: 402 [2020-12-23 13:54:25,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=492, Invalid=3290, Unknown=0, NotChecked=0, Total=3782 [2020-12-23 13:54:25,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-12-23 13:54:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 305. [2020-12-23 13:54:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-12-23 13:54:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 684 transitions. [2020-12-23 13:54:25,908 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 684 transitions. Word has length 23 [2020-12-23 13:54:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:25,908 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 684 transitions. [2020-12-23 13:54:25,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 13:54:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 684 transitions. [2020-12-23 13:54:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:54:25,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:25,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:26,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:54:26,124 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:26,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:26,125 INFO L82 PathProgramCache]: Analyzing trace with hash -274164387, now seen corresponding path program 13 times [2020-12-23 13:54:26,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:26,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349056351] [2020-12-23 13:54:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:27,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349056351] [2020-12-23 13:54:27,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725044028] [2020-12-23 13:54:27,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:54:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:27,386 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 102 conjunts are in the unsatisfiable core [2020-12-23 13:54:27,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:54:27,410 INFO L382 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 101 treesize of output 93 [2020-12-23 13:54:27,413 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:27,450 INFO L625 ElimStorePlain]: treesize reduction 14, result has 79.1 percent of original size [2020-12-23 13:54:27,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:27,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:54:27,465 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:27,480 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:27,483 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:54:27,484 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:54:28,305 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 13:54:28,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,322 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:28,347 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:28,348 INFO L382 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 [2020-12-23 13:54:28,351 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:28,409 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:54:28,411 INFO L547 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. [2020-12-23 13:54:28,412 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:54:28,618 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:54:28,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:28,628 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:28,636 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:28,638 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:54:28,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,662 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:28,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,670 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,687 INFO L382 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 [2020-12-23 13:54:28,690 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:28,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,700 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:28,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,706 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,717 INFO L382 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 [2020-12-23 13:54:28,719 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:28,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,725 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:28,729 INFO L382 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 67 treesize of output 54 [2020-12-23 13:54:28,731 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:28,749 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:28,751 INFO L547 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. [2020-12-23 13:54:28,751 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:54:29,229 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:29,229 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:54:29,233 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:29,302 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:54:29,304 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:54:29,306 INFO L547 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. [2020-12-23 13:54:29,307 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:54:29,403 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:54:29,405 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:29,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:29,413 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:54:29,413 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:54:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:29,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:54:29,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 35 [2020-12-23 13:54:29,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368108083] [2020-12-23 13:54:29,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 13:54:29,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:29,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 13:54:29,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 13:54:29,526 INFO L87 Difference]: Start difference. First operand 305 states and 684 transitions. Second operand 37 states. [2020-12-23 13:54:30,540 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2020-12-23 13:54:30,720 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-12-23 13:54:30,976 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-12-23 13:54:31,411 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2020-12-23 13:54:31,873 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-12-23 13:54:32,055 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-12-23 13:54:32,312 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2020-12-23 13:54:32,729 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2020-12-23 13:54:33,652 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-12-23 13:54:33,884 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-12-23 13:54:34,327 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-12-23 13:54:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:34,825 INFO L93 Difference]: Finished difference Result 408 states and 900 transitions. [2020-12-23 13:54:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 13:54:34,826 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 23 [2020-12-23 13:54:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:34,829 INFO L225 Difference]: With dead ends: 408 [2020-12-23 13:54:34,829 INFO L226 Difference]: Without dead ends: 408 [2020-12-23 13:54:34,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=474, Invalid=3186, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 13:54:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-12-23 13:54:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 319. [2020-12-23 13:54:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-12-23 13:54:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 721 transitions. [2020-12-23 13:54:34,840 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 721 transitions. Word has length 23 [2020-12-23 13:54:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:34,840 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 721 transitions. [2020-12-23 13:54:34,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 13:54:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 721 transitions. [2020-12-23 13:54:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:54:34,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:34,841 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:35,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 13:54:35,055 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:35,056 INFO L82 PathProgramCache]: Analyzing trace with hash 890303927, now seen corresponding path program 14 times [2020-12-23 13:54:35,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:35,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639241485] [2020-12-23 13:54:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:36,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639241485] [2020-12-23 13:54:36,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485864468] [2020-12-23 13:54:36,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:54:36,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:54:36,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:54:36,441 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 102 conjunts are in the unsatisfiable core [2020-12-23 13:54:36,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:54:36,459 INFO L382 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 202 treesize of output 194 [2020-12-23 13:54:36,462 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:36,477 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:36,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:36,484 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:54:36,485 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:36,499 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:36,503 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:54:36,503 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:54:37,322 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 13:54:37,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,340 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:37,367 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:37,367 INFO L382 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 [2020-12-23 13:54:37,373 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:37,437 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:54:37,439 INFO L547 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. [2020-12-23 13:54:37,440 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:54:37,652 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:54:37,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:37,656 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:37,660 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:37,662 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:54:37,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,682 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:37,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,691 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:37,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,712 INFO L382 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 [2020-12-23 13:54:37,715 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:37,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,723 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,729 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:37,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,742 INFO L382 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 [2020-12-23 13:54:37,744 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:37,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,750 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:37,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:37,752 INFO L382 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 67 treesize of output 54 [2020-12-23 13:54:37,754 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:37,772 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:37,773 INFO L547 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. [2020-12-23 13:54:37,774 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:54:38,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:38,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:38,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:38,131 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:38,132 INFO L382 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 58 treesize of output 150 [2020-12-23 13:54:38,136 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:38,199 INFO L625 ElimStorePlain]: treesize reduction 62, result has 50.8 percent of original size [2020-12-23 13:54:38,201 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:54:38,204 INFO L547 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. [2020-12-23 13:54:38,204 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:34 [2020-12-23 13:54:38,400 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:38,400 INFO L382 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 [2020-12-23 13:54:38,405 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:38,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:38,417 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:54:38,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-12-23 13:54:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:38,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:54:38,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2020-12-23 13:54:38,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206374399] [2020-12-23 13:54:38,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 13:54:38,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:38,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 13:54:38,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 13:54:38,429 INFO L87 Difference]: Start difference. First operand 319 states and 721 transitions. Second operand 36 states. [2020-12-23 13:54:39,152 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-12-23 13:54:39,369 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2020-12-23 13:54:39,541 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-12-23 13:54:39,773 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-12-23 13:54:39,938 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-12-23 13:54:40,170 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-12-23 13:54:40,368 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-12-23 13:54:40,615 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2020-12-23 13:54:40,786 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-12-23 13:54:41,031 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2020-12-23 13:54:41,430 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 56 [2020-12-23 13:54:42,753 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-12-23 13:54:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:44,046 INFO L93 Difference]: Finished difference Result 411 states and 901 transitions. [2020-12-23 13:54:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 13:54:44,047 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-12-23 13:54:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:44,050 INFO L225 Difference]: With dead ends: 411 [2020-12-23 13:54:44,050 INFO L226 Difference]: Without dead ends: 411 [2020-12-23 13:54:44,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=572, Invalid=3718, Unknown=0, NotChecked=0, Total=4290 [2020-12-23 13:54:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-12-23 13:54:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 332. [2020-12-23 13:54:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-12-23 13:54:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 745 transitions. [2020-12-23 13:54:44,061 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 745 transitions. Word has length 23 [2020-12-23 13:54:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:44,061 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 745 transitions. [2020-12-23 13:54:44,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 13:54:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 745 transitions. [2020-12-23 13:54:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:54:44,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:44,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:44,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:54:44,278 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:44,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:44,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1391923213, now seen corresponding path program 15 times [2020-12-23 13:54:44,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:44,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563662559] [2020-12-23 13:54:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:44,993 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 44 [2020-12-23 13:54:45,261 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-12-23 13:54:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:45,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563662559] [2020-12-23 13:54:45,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360274269] [2020-12-23 13:54:45,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:54:45,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 13:54:45,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:54:45,914 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 102 conjunts are in the unsatisfiable core [2020-12-23 13:54:45,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:54:45,931 INFO L382 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 76 treesize of output 72 [2020-12-23 13:54:45,933 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:45,972 INFO L625 ElimStorePlain]: treesize reduction 14, result has 79.1 percent of original size [2020-12-23 13:54:45,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:45,978 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:54:45,979 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:45,995 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:45,998 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:54:45,998 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:54:46,842 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 13:54:46,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:46,857 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:46,887 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:46,888 INFO L382 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 [2020-12-23 13:54:46,893 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:46,960 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:54:46,963 INFO L547 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. [2020-12-23 13:54:46,963 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:54:47,178 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:54:47,179 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:47,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:47,186 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:47,188 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:54:47,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,205 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:47,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,214 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:47,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,232 INFO L382 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 [2020-12-23 13:54:47,234 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:47,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,242 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:47,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,247 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:47,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,258 INFO L382 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 67 treesize of output 54 [2020-12-23 13:54:47,260 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,267 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:47,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:47,269 INFO L382 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 [2020-12-23 13:54:47,270 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:47,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:47,289 INFO L547 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. [2020-12-23 13:54:47,289 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:54:47,821 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:47,822 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:54:47,825 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:47,903 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:54:47,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:54:47,908 INFO L547 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. [2020-12-23 13:54:47,908 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:54:48,010 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:54:48,012 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:48,018 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:48,020 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:54:48,020 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:54:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:48,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:54:48,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2020-12-23 13:54:48,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798698324] [2020-12-23 13:54:48,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 13:54:48,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:48,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 13:54:48,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 13:54:48,033 INFO L87 Difference]: Start difference. First operand 332 states and 745 transitions. Second operand 35 states. [2020-12-23 13:54:48,527 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2020-12-23 13:54:48,773 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-12-23 13:54:49,030 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2020-12-23 13:54:49,223 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2020-12-23 13:54:49,494 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2020-12-23 13:54:49,697 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-12-23 13:54:49,957 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-12-23 13:54:50,197 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2020-12-23 13:54:50,480 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2020-12-23 13:54:50,691 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-12-23 13:54:51,009 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2020-12-23 13:54:51,428 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2020-12-23 13:54:52,670 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-12-23 13:54:52,951 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-12-23 13:54:53,450 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-12-23 13:54:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:54:53,974 INFO L93 Difference]: Finished difference Result 456 states and 1010 transitions. [2020-12-23 13:54:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 13:54:53,975 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 23 [2020-12-23 13:54:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:54:53,978 INFO L225 Difference]: With dead ends: 456 [2020-12-23 13:54:53,978 INFO L226 Difference]: Without dead ends: 456 [2020-12-23 13:54:53,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=460, Invalid=2962, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 13:54:53,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-12-23 13:54:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 360. [2020-12-23 13:54:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-12-23 13:54:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 808 transitions. [2020-12-23 13:54:53,988 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 808 transitions. Word has length 23 [2020-12-23 13:54:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:54:53,988 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 808 transitions. [2020-12-23 13:54:53,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 13:54:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 808 transitions. [2020-12-23 13:54:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:54:53,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:54:53,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:54:54,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 13:54:54,203 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:54:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:54:54,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1045427829, now seen corresponding path program 16 times [2020-12-23 13:54:54,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:54:54,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307092069] [2020-12-23 13:54:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:54:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:54:54,869 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-12-23 13:54:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:55,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307092069] [2020-12-23 13:54:55,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221384418] [2020-12-23 13:54:55,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:54:55,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:54:55,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:54:55,649 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:54:55,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:54:55,666 INFO L382 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 39 treesize of output 37 [2020-12-23 13:54:55,668 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 13:54:55,715 INFO L625 ElimStorePlain]: treesize reduction 22, result has 70.7 percent of original size [2020-12-23 13:54:55,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:55,721 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:54:55,722 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:55,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:55,740 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:54:55,740 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:54:56,592 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 13:54:56,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:56,607 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:56,632 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:56,632 INFO L382 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 [2020-12-23 13:54:56,635 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:56,701 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:54:56,703 INFO L547 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. [2020-12-23 13:54:56,704 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:54:56,932 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:54:56,933 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:56,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:56,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:54:56,939 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:54:56,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:56,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:56,959 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:56,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:56,966 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:56,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:56,981 INFO L382 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 [2020-12-23 13:54:56,983 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:56,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:56,992 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:56,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:56,998 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:57,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:57,014 INFO L382 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 67 treesize of output 54 [2020-12-23 13:54:57,019 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:57,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:57,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:57,027 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:54:57,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:54:57,029 INFO L382 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 [2020-12-23 13:54:57,031 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:57,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:57,052 INFO L547 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. [2020-12-23 13:54:57,052 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:54:57,544 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:57,545 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:54:57,549 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:57,619 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:54:57,621 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:54:57,623 INFO L547 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. [2020-12-23 13:54:57,623 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:54:57,731 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:54:57,734 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:54:57,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:54:57,742 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:54:57,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:54:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:54:57,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:54:57,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2020-12-23 13:54:57,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58185592] [2020-12-23 13:54:57,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 13:54:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:54:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 13:54:57,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 13:54:57,790 INFO L87 Difference]: Start difference. First operand 360 states and 808 transitions. Second operand 35 states. [2020-12-23 13:54:58,563 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-12-23 13:54:58,849 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-12-23 13:54:59,034 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-12-23 13:54:59,311 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-12-23 13:54:59,510 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-12-23 13:54:59,781 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2020-12-23 13:55:00,022 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2020-12-23 13:55:00,300 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-12-23 13:55:00,519 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-12-23 13:55:00,810 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2020-12-23 13:55:01,262 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2020-12-23 13:55:02,432 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-12-23 13:55:02,724 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-12-23 13:55:03,241 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-23 13:55:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:55:03,864 INFO L93 Difference]: Finished difference Result 462 states and 1022 transitions. [2020-12-23 13:55:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 13:55:03,868 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 23 [2020-12-23 13:55:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:55:03,870 INFO L225 Difference]: With dead ends: 462 [2020-12-23 13:55:03,871 INFO L226 Difference]: Without dead ends: 462 [2020-12-23 13:55:03,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=444, Invalid=2862, Unknown=0, NotChecked=0, Total=3306 [2020-12-23 13:55:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-12-23 13:55:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 374. [2020-12-23 13:55:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-12-23 13:55:03,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 845 transitions. [2020-12-23 13:55:03,882 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 845 transitions. Word has length 23 [2020-12-23 13:55:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:55:03,882 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 845 transitions. [2020-12-23 13:55:03,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 13:55:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 845 transitions. [2020-12-23 13:55:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:55:03,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:55:03,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:55:04,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:55:04,099 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:55:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:55:04,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2085071153, now seen corresponding path program 17 times [2020-12-23 13:55:04,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:55:04,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771637861] [2020-12-23 13:55:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:55:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:55:04,642 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-12-23 13:55:04,803 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-12-23 13:55:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:05,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771637861] [2020-12-23 13:55:05,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508004634] [2020-12-23 13:55:05,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:55:05,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:55:05,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:55:05,588 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:55:05,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:55:05,607 INFO L382 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 63 treesize of output 59 [2020-12-23 13:55:05,612 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:05,649 INFO L625 ElimStorePlain]: treesize reduction 18, result has 74.6 percent of original size [2020-12-23 13:55:05,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:05,656 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:55:05,657 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:05,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:05,674 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:55:05,674 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:55:06,558 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 13:55:06,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,571 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:06,602 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:06,603 INFO L382 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 [2020-12-23 13:55:06,606 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:06,677 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:55:06,679 INFO L547 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. [2020-12-23 13:55:06,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:55:06,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:55:06,892 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:06,894 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:06,896 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:06,898 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:55:06,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,916 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:06,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,926 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:06,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,952 INFO L382 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 [2020-12-23 13:55:06,955 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:06,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,965 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:06,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,971 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:06,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,984 INFO L382 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 [2020-12-23 13:55:06,986 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:06,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,992 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:06,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:06,995 INFO L382 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 67 treesize of output 54 [2020-12-23 13:55:06,997 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:07,017 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:07,019 INFO L547 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. [2020-12-23 13:55:07,020 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:55:07,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:07,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:07,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:07,396 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:07,397 INFO L382 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 58 treesize of output 150 [2020-12-23 13:55:07,400 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:07,474 INFO L625 ElimStorePlain]: treesize reduction 62, result has 50.8 percent of original size [2020-12-23 13:55:07,476 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:55:07,478 INFO L547 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. [2020-12-23 13:55:07,479 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:34 [2020-12-23 13:55:07,682 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:07,682 INFO L382 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 [2020-12-23 13:55:07,684 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:07,689 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:07,691 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:55:07,691 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-12-23 13:55:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:07,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:55:07,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2020-12-23 13:55:07,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962238733] [2020-12-23 13:55:07,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 13:55:07,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:55:07,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 13:55:07,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 13:55:07,730 INFO L87 Difference]: Start difference. First operand 374 states and 845 transitions. Second operand 35 states. [2020-12-23 13:55:08,223 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2020-12-23 13:55:08,480 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-12-23 13:55:08,753 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2020-12-23 13:55:08,959 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2020-12-23 13:55:09,210 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2020-12-23 13:55:09,406 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-12-23 13:55:09,660 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-12-23 13:55:09,878 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2020-12-23 13:55:10,144 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-12-23 13:55:10,351 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-12-23 13:55:10,614 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2020-12-23 13:55:11,041 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 59 [2020-12-23 13:55:11,903 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-23 13:55:12,346 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-12-23 13:55:12,665 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-23 13:55:13,289 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-23 13:55:14,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:55:14,199 INFO L93 Difference]: Finished difference Result 465 states and 1023 transitions. [2020-12-23 13:55:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-23 13:55:14,200 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 23 [2020-12-23 13:55:14,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:55:14,203 INFO L225 Difference]: With dead ends: 465 [2020-12-23 13:55:14,203 INFO L226 Difference]: Without dead ends: 465 [2020-12-23 13:55:14,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=544, Invalid=3488, Unknown=0, NotChecked=0, Total=4032 [2020-12-23 13:55:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-12-23 13:55:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 332. [2020-12-23 13:55:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-12-23 13:55:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 745 transitions. [2020-12-23 13:55:14,213 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 745 transitions. Word has length 23 [2020-12-23 13:55:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:55:14,213 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 745 transitions. [2020-12-23 13:55:14,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 13:55:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 745 transitions. [2020-12-23 13:55:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:55:14,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:55:14,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:55:14,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 13:55:14,429 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:55:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:55:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash 129552435, now seen corresponding path program 18 times [2020-12-23 13:55:14,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:55:14,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417352841] [2020-12-23 13:55:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:55:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:55:15,313 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-12-23 13:55:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:16,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417352841] [2020-12-23 13:55:16,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920393911] [2020-12-23 13:55:16,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:55:16,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-12-23 13:55:16,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:55:16,189 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:55:16,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:55:16,208 INFO L382 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 101 treesize of output 93 [2020-12-23 13:55:16,210 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:16,250 INFO L625 ElimStorePlain]: treesize reduction 14, result has 79.1 percent of original size [2020-12-23 13:55:16,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:16,256 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:55:16,257 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:16,273 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:16,276 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:55:16,276 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:55:17,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,025 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:17,056 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:17,056 INFO L382 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 [2020-12-23 13:55:17,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:17,124 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:55:17,126 INFO L547 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. [2020-12-23 13:55:17,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-12-23 13:55:17,473 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:55:17,474 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:17,476 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:17,479 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:17,481 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:55:17,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,498 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:17,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,507 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:17,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,533 INFO L382 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 67 treesize of output 54 [2020-12-23 13:55:17,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:17,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,545 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:17,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,553 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:17,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,571 INFO L382 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 [2020-12-23 13:55:17,573 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:17,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,581 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:17,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:17,585 INFO L382 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 [2020-12-23 13:55:17,587 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:17,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:17,609 INFO L547 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. [2020-12-23 13:55:17,610 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:55:18,163 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:18,164 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:55:18,173 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:18,249 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:55:18,251 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:55:18,254 INFO L547 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. [2020-12-23 13:55:18,254 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:55:18,364 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:55:18,367 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:18,373 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:18,375 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:55:18,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:55:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:18,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:55:18,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2020-12-23 13:55:18,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977074845] [2020-12-23 13:55:18,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 13:55:18,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:55:18,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 13:55:18,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 13:55:18,509 INFO L87 Difference]: Start difference. First operand 332 states and 745 transitions. Second operand 38 states. [2020-12-23 13:55:19,333 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-23 13:55:20,211 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2020-12-23 13:55:20,518 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2020-12-23 13:55:20,860 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2020-12-23 13:55:21,266 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2020-12-23 13:55:21,745 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 61 [2020-12-23 13:55:22,458 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-12-23 13:55:22,643 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2020-12-23 13:55:23,086 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2020-12-23 13:55:23,305 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2020-12-23 13:55:23,683 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2020-12-23 13:55:24,025 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2020-12-23 13:55:24,292 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2020-12-23 13:55:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:55:24,890 INFO L93 Difference]: Finished difference Result 436 states and 971 transitions. [2020-12-23 13:55:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 13:55:24,891 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 23 [2020-12-23 13:55:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:55:24,893 INFO L225 Difference]: With dead ends: 436 [2020-12-23 13:55:24,893 INFO L226 Difference]: Without dead ends: 436 [2020-12-23 13:55:24,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=438, Invalid=3102, Unknown=0, NotChecked=0, Total=3540 [2020-12-23 13:55:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-12-23 13:55:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 348. [2020-12-23 13:55:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-12-23 13:55:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 784 transitions. [2020-12-23 13:55:24,902 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 784 transitions. Word has length 23 [2020-12-23 13:55:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:55:24,903 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 784 transitions. [2020-12-23 13:55:24,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 13:55:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 784 transitions. [2020-12-23 13:55:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:55:24,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:55:24,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:55:25,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 13:55:25,119 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:55:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:55:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash -216942949, now seen corresponding path program 19 times [2020-12-23 13:55:25,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:55:25,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075683536] [2020-12-23 13:55:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:55:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:55:25,967 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-12-23 13:55:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:26,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075683536] [2020-12-23 13:55:26,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151337563] [2020-12-23 13:55:26,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:55:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:55:26,702 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 102 conjunts are in the unsatisfiable core [2020-12-23 13:55:26,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:55:26,720 INFO L382 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 39 treesize of output 37 [2020-12-23 13:55:26,722 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 13:55:26,767 INFO L625 ElimStorePlain]: treesize reduction 22, result has 70.7 percent of original size [2020-12-23 13:55:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:26,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:55:26,774 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:26,791 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:26,794 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:55:26,794 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:55:27,524 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:55:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:27,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:27,548 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:27,580 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:27,580 INFO L382 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 [2020-12-23 13:55:27,583 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:27,654 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:55:27,656 INFO L547 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. [2020-12-23 13:55:27,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-12-23 13:55:28,010 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:55:28,011 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:28,013 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:28,017 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:28,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:55:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,036 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,046 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:28,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,072 INFO L382 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 67 treesize of output 54 [2020-12-23 13:55:28,074 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:28,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,085 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:28,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,091 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:28,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,107 INFO L382 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 [2020-12-23 13:55:28,109 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,121 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:28,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:28,123 INFO L382 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 [2020-12-23 13:55:28,128 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:28,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:28,153 INFO L547 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. [2020-12-23 13:55:28,153 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:55:28,674 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:28,674 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:55:28,678 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:28,760 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:55:28,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:55:28,767 INFO L547 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. [2020-12-23 13:55:28,767 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:55:28,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:55:28,890 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:28,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:28,899 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:55:28,899 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:55:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:29,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:55:29,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2020-12-23 13:55:29,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106023711] [2020-12-23 13:55:29,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 13:55:29,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:55:29,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 13:55:29,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 13:55:29,038 INFO L87 Difference]: Start difference. First operand 348 states and 784 transitions. Second operand 38 states. [2020-12-23 13:55:29,889 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-23 13:55:30,479 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-12-23 13:55:30,790 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2020-12-23 13:55:31,114 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2020-12-23 13:55:31,468 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2020-12-23 13:55:31,970 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 63 [2020-12-23 13:55:32,463 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 61 [2020-12-23 13:55:33,089 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-12-23 13:55:33,544 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2020-12-23 13:55:33,820 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2020-12-23 13:55:34,113 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2020-12-23 13:55:34,365 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-12-23 13:55:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:55:35,007 INFO L93 Difference]: Finished difference Result 442 states and 983 transitions. [2020-12-23 13:55:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 13:55:35,008 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 23 [2020-12-23 13:55:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:55:35,010 INFO L225 Difference]: With dead ends: 442 [2020-12-23 13:55:35,010 INFO L226 Difference]: Without dead ends: 442 [2020-12-23 13:55:35,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=420, Invalid=3002, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 13:55:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-12-23 13:55:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 362. [2020-12-23 13:55:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-12-23 13:55:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 821 transitions. [2020-12-23 13:55:35,018 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 821 transitions. Word has length 23 [2020-12-23 13:55:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:55:35,019 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 821 transitions. [2020-12-23 13:55:35,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 13:55:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 821 transitions. [2020-12-23 13:55:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:55:35,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:55:35,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:55:35,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 13:55:35,221 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:55:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:55:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash 947525365, now seen corresponding path program 20 times [2020-12-23 13:55:35,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:55:35,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320527477] [2020-12-23 13:55:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:55:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:55:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:36,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320527477] [2020-12-23 13:55:36,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095738033] [2020-12-23 13:55:36,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:55:36,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:55:36,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:55:36,974 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 96 conjunts are in the unsatisfiable core [2020-12-23 13:55:36,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:55:36,991 INFO L382 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 117 treesize of output 113 [2020-12-23 13:55:36,994 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:37,039 INFO L625 ElimStorePlain]: treesize reduction 14, result has 79.1 percent of original size [2020-12-23 13:55:37,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:37,051 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:55:37,052 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:37,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:37,070 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:55:37,071 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:55:37,837 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:55:37,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:37,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:37,850 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:37,882 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:37,882 INFO L382 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 [2020-12-23 13:55:37,886 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:37,953 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:55:37,955 INFO L547 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. [2020-12-23 13:55:37,956 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-12-23 13:55:38,299 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:55:38,301 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:38,302 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:38,304 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:38,305 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:55:38,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,320 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:38,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,329 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:38,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,349 INFO L382 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 [2020-12-23 13:55:38,350 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,360 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:38,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,365 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:38,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,380 INFO L382 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 67 treesize of output 54 [2020-12-23 13:55:38,384 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:38,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,394 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:38,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,397 INFO L382 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 [2020-12-23 13:55:38,398 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:38,419 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:38,421 INFO L547 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. [2020-12-23 13:55:38,421 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:55:38,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:38,838 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:38,838 INFO L382 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 58 treesize of output 150 [2020-12-23 13:55:38,841 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:38,928 INFO L625 ElimStorePlain]: treesize reduction 62, result has 50.8 percent of original size [2020-12-23 13:55:38,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:55:38,931 INFO L547 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. [2020-12-23 13:55:38,932 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:34 [2020-12-23 13:55:39,167 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:39,167 INFO L382 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 [2020-12-23 13:55:39,169 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:39,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:39,178 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:55:39,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-12-23 13:55:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:39,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:55:39,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2020-12-23 13:55:39,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115149036] [2020-12-23 13:55:39,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 13:55:39,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:55:39,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 13:55:39,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 13:55:39,320 INFO L87 Difference]: Start difference. First operand 362 states and 821 transitions. Second operand 38 states. [2020-12-23 13:55:39,922 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-12-23 13:55:40,164 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-23 13:55:40,732 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-12-23 13:55:40,967 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2020-12-23 13:55:41,250 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2020-12-23 13:55:41,552 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-12-23 13:55:41,840 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2020-12-23 13:55:42,205 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2020-12-23 13:55:42,726 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2020-12-23 13:55:43,210 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 61 [2020-12-23 13:55:43,806 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-12-23 13:55:43,974 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2020-12-23 13:55:44,440 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-12-23 13:55:44,878 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-12-23 13:55:45,115 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2020-12-23 13:55:45,699 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 58 [2020-12-23 13:55:46,045 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-12-23 13:55:46,266 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-12-23 13:55:46,555 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2020-12-23 13:55:46,805 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-12-23 13:55:47,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:55:47,199 INFO L93 Difference]: Finished difference Result 514 states and 1143 transitions. [2020-12-23 13:55:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 13:55:47,200 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 23 [2020-12-23 13:55:47,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:55:47,203 INFO L225 Difference]: With dead ends: 514 [2020-12-23 13:55:47,204 INFO L226 Difference]: Without dead ends: 514 [2020-12-23 13:55:47,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=599, Invalid=4093, Unknown=0, NotChecked=0, Total=4692 [2020-12-23 13:55:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-12-23 13:55:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 332. [2020-12-23 13:55:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-12-23 13:55:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 745 transitions. [2020-12-23 13:55:47,219 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 745 transitions. Word has length 23 [2020-12-23 13:55:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:55:47,219 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 745 transitions. [2020-12-23 13:55:47,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 13:55:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 745 transitions. [2020-12-23 13:55:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:55:47,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:55:47,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:55:47,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:55:47,421 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:55:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:55:47,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1966659077, now seen corresponding path program 21 times [2020-12-23 13:55:47,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:55:47,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561354135] [2020-12-23 13:55:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:55:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:55:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:48,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561354135] [2020-12-23 13:55:48,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757371561] [2020-12-23 13:55:48,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:55:48,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 13:55:48,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:55:48,670 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 98 conjunts are in the unsatisfiable core [2020-12-23 13:55:48,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:55:48,689 INFO L382 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 160 treesize of output 144 [2020-12-23 13:55:48,691 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:48,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:48,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:48,715 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:55:48,717 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:48,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:48,737 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:55:48,737 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:55:49,481 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:55:49,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,493 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:49,532 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:49,532 INFO L382 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 [2020-12-23 13:55:49,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:49,606 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:55:49,608 INFO L547 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. [2020-12-23 13:55:49,608 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-12-23 13:55:49,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:55:49,827 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:49,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:49,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:49,832 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:55:49,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,862 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:49,876 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:49,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,886 INFO L382 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 [2020-12-23 13:55:49,889 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:49,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,903 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:49,917 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:49,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,926 INFO L382 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 67 treesize of output 54 [2020-12-23 13:55:49,929 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:49,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:49,941 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:49,942 INFO L382 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 [2020-12-23 13:55:49,943 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:49,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:49,965 INFO L547 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. [2020-12-23 13:55:49,965 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:259, output treesize:46 [2020-12-23 13:55:50,629 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:50,630 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:55:50,633 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:50,719 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:55:50,721 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:55:50,726 INFO L547 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. [2020-12-23 13:55:50,727 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:55:50,937 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:55:50,939 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:50,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:50,946 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:55:50,947 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:55:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:50,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:55:50,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2020-12-23 13:55:50,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570834301] [2020-12-23 13:55:50,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 13:55:50,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:55:50,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 13:55:50,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1087, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 13:55:50,989 INFO L87 Difference]: Start difference. First operand 332 states and 745 transitions. Second operand 35 states. [2020-12-23 13:55:52,506 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-12-23 13:55:53,976 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-12-23 13:55:54,188 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2020-12-23 13:55:54,551 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2020-12-23 13:55:54,842 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-12-23 13:55:55,093 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-12-23 13:55:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:55:55,702 INFO L93 Difference]: Finished difference Result 432 states and 964 transitions. [2020-12-23 13:55:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 13:55:55,703 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 23 [2020-12-23 13:55:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:55:55,707 INFO L225 Difference]: With dead ends: 432 [2020-12-23 13:55:55,707 INFO L226 Difference]: Without dead ends: 432 [2020-12-23 13:55:55,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=354, Invalid=2402, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 13:55:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-12-23 13:55:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 342. [2020-12-23 13:55:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-12-23 13:55:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 772 transitions. [2020-12-23 13:55:55,717 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 772 transitions. Word has length 23 [2020-12-23 13:55:55,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:55:55,718 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 772 transitions. [2020-12-23 13:55:55,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 13:55:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 772 transitions. [2020-12-23 13:55:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:55:55,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:55:55,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:55:55,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-23 13:55:55,934 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:55:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:55:55,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1620163693, now seen corresponding path program 22 times [2020-12-23 13:55:55,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:55:55,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203603869] [2020-12-23 13:55:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:55:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:55:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:56,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203603869] [2020-12-23 13:55:56,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163956749] [2020-12-23 13:55:56,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:55:57,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:55:57,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:55:57,079 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:55:57,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:55:57,101 INFO L382 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 247 treesize of output 231 [2020-12-23 13:55:57,104 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:57,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:57,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:57,123 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:55:57,124 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:57,138 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:57,140 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:55:57,141 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:55:57,837 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:55:57,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:57,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:57,848 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:57,876 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:57,877 INFO L382 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 [2020-12-23 13:55:57,879 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:57,938 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:55:57,940 INFO L547 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. [2020-12-23 13:55:57,940 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-12-23 13:55:58,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:55:58,132 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:58,133 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:58,135 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:55:58,136 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:55:58,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,155 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:58,174 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:58,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,187 INFO L382 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 67 treesize of output 54 [2020-12-23 13:55:58,189 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:58,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,201 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:58,213 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:58,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,223 INFO L382 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 [2020-12-23 13:55:58,225 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:58,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:55:58,237 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:55:58,239 INFO L382 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 [2020-12-23 13:55:58,240 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:58,256 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:58,258 INFO L547 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. [2020-12-23 13:55:58,258 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:259, output treesize:46 [2020-12-23 13:55:58,848 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:58,848 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:55:58,852 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:58,939 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:55:58,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:55:58,943 INFO L547 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. [2020-12-23 13:55:58,944 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:55:59,052 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:55:59,055 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:55:59,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:55:59,062 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:55:59,063 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:55:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:55:59,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:55:59,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2020-12-23 13:55:59,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787970224] [2020-12-23 13:55:59,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 13:55:59,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:55:59,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 13:55:59,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 13:55:59,115 INFO L87 Difference]: Start difference. First operand 342 states and 772 transitions. Second operand 34 states. [2020-12-23 13:55:59,823 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-23 13:56:00,530 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-12-23 13:56:01,760 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-12-23 13:56:01,906 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-12-23 13:56:02,269 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-12-23 13:56:02,472 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2020-12-23 13:56:02,666 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-12-23 13:56:03,143 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-12-23 13:56:03,484 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-12-23 13:56:03,775 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-12-23 13:56:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:56:04,377 INFO L93 Difference]: Finished difference Result 466 states and 1043 transitions. [2020-12-23 13:56:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 13:56:04,379 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 23 [2020-12-23 13:56:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:56:04,383 INFO L225 Difference]: With dead ends: 466 [2020-12-23 13:56:04,383 INFO L226 Difference]: Without dead ends: 466 [2020-12-23 13:56:04,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=406, Invalid=2674, Unknown=0, NotChecked=0, Total=3080 [2020-12-23 13:56:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-12-23 13:56:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 356. [2020-12-23 13:56:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-12-23 13:56:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 809 transitions. [2020-12-23 13:56:04,392 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 809 transitions. Word has length 23 [2020-12-23 13:56:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:56:04,392 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 809 transitions. [2020-12-23 13:56:04,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 13:56:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 809 transitions. [2020-12-23 13:56:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:56:04,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:56:04,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:56:04,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:56:04,596 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:56:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:56:04,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1510335289, now seen corresponding path program 23 times [2020-12-23 13:56:04,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:56:04,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661456096] [2020-12-23 13:56:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:56:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:56:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:05,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661456096] [2020-12-23 13:56:05,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829705285] [2020-12-23 13:56:05,606 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:56:05,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:56:05,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:56:05,695 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:56:05,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:56:05,714 INFO L382 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 57 treesize of output 55 [2020-12-23 13:56:05,717 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:05,772 INFO L625 ElimStorePlain]: treesize reduction 18, result has 74.6 percent of original size [2020-12-23 13:56:05,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:05,779 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:56:05,783 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:05,799 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:05,802 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:56:05,803 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:56:06,516 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:56:06,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,528 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:06,564 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:06,565 INFO L382 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 [2020-12-23 13:56:06,568 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:06,637 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:56:06,640 INFO L547 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. [2020-12-23 13:56:06,640 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-12-23 13:56:06,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:56:06,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:06,845 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:06,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:06,850 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:56:06,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,868 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:06,881 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,893 INFO L382 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 [2020-12-23 13:56:06,894 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:06,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,922 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:06,937 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:06,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,948 INFO L382 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 67 treesize of output 54 [2020-12-23 13:56:06,950 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:06,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:06,961 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:06,962 INFO L382 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 [2020-12-23 13:56:06,965 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:06,986 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:06,988 INFO L547 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. [2020-12-23 13:56:06,988 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:259, output treesize:46 [2020-12-23 13:56:07,545 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:07,546 INFO L382 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 [2020-12-23 13:56:07,550 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:07,632 INFO L625 ElimStorePlain]: treesize reduction 58, result has 50.4 percent of original size [2020-12-23 13:56:07,634 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:56:07,636 INFO L547 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. [2020-12-23 13:56:07,636 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:32 [2020-12-23 13:56:07,845 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:07,846 INFO L382 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 [2020-12-23 13:56:07,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:07,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:07,857 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:56:07,858 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-12-23 13:56:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:07,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:56:07,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2020-12-23 13:56:07,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564587653] [2020-12-23 13:56:07,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 13:56:07,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:56:07,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 13:56:07,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 13:56:07,868 INFO L87 Difference]: Start difference. First operand 356 states and 809 transitions. Second operand 34 states. [2020-12-23 13:56:09,305 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-12-23 13:56:09,538 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-12-23 13:56:09,708 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-12-23 13:56:10,002 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-12-23 13:56:11,078 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-12-23 13:56:12,152 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 13:56:12,588 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-12-23 13:56:13,219 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-12-23 13:56:13,421 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-12-23 13:56:14,023 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-12-23 13:56:14,601 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-12-23 13:56:14,998 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-12-23 13:56:15,447 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-12-23 13:56:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:56:16,222 INFO L93 Difference]: Finished difference Result 557 states and 1245 transitions. [2020-12-23 13:56:16,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-23 13:56:16,223 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 23 [2020-12-23 13:56:16,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:56:16,226 INFO L225 Difference]: With dead ends: 557 [2020-12-23 13:56:16,226 INFO L226 Difference]: Without dead ends: 557 [2020-12-23 13:56:16,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=596, Invalid=3826, Unknown=0, NotChecked=0, Total=4422 [2020-12-23 13:56:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-12-23 13:56:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 332. [2020-12-23 13:56:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-12-23 13:56:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 745 transitions. [2020-12-23 13:56:16,236 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 745 transitions. Word has length 23 [2020-12-23 13:56:16,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:56:16,236 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 745 transitions. [2020-12-23 13:56:16,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 13:56:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 745 transitions. [2020-12-23 13:56:16,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:56:16,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:56:16,237 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:56:16,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 13:56:16,451 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:56:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:56:16,452 INFO L82 PathProgramCache]: Analyzing trace with hash -70004981, now seen corresponding path program 24 times [2020-12-23 13:56:16,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:56:16,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696424528] [2020-12-23 13:56:16,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:56:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:56:17,027 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-12-23 13:56:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:17,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696424528] [2020-12-23 13:56:17,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612902180] [2020-12-23 13:56:17,891 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:56:18,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-12-23 13:56:18,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:56:18,026 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 101 conjunts are in the unsatisfiable core [2020-12-23 13:56:18,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:56:18,045 INFO L382 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 76 treesize of output 72 [2020-12-23 13:56:18,048 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:18,095 INFO L625 ElimStorePlain]: treesize reduction 14, result has 79.1 percent of original size [2020-12-23 13:56:18,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,102 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:56:18,105 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:18,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:18,123 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:56:18,124 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:56:18,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,539 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:18,573 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:18,574 INFO L382 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 [2020-12-23 13:56:18,577 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:18,649 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:56:18,651 INFO L547 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. [2020-12-23 13:56:18,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-12-23 13:56:18,869 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:56:18,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 13:56:18,879 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:56:18,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 13:56:18,885 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:18,895 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 13:56:18,898 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:56:18,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:56:18,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 13:56:18,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 13:56:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,940 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:18,951 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:18,965 INFO L382 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 [2020-12-23 13:56:18,967 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:18,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:18,982 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:18,995 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:19,009 INFO L382 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 [2020-12-23 13:56:19,012 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:19,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:19,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:19,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:19,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:19,024 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:19,033 INFO L382 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 [2020-12-23 13:56:19,035 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:19,129 INFO L625 ElimStorePlain]: treesize reduction 134, result has 28.3 percent of original size [2020-12-23 13:56:19,136 INFO L547 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. [2020-12-23 13:56:19,137 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:244, output treesize:55 [2020-12-23 13:56:19,943 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-12-23 13:56:19,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 13:56:20,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:20,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:20,282 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:20,324 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:20,324 INFO L382 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 145 [2020-12-23 13:56:20,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:56:20,331 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:20,438 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-23 13:56:20,439 INFO L625 ElimStorePlain]: treesize reduction 69, result has 57.1 percent of original size [2020-12-23 13:56:20,443 INFO L547 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. [2020-12-23 13:56:20,444 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:89, output treesize:72 [2020-12-23 13:56:20,587 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:56:20,589 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:20,596 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:20,597 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:56:20,598 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:56:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:20,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:56:20,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2020-12-23 13:56:20,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286848782] [2020-12-23 13:56:20,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 13:56:20,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:56:20,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 13:56:20,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 13:56:20,642 INFO L87 Difference]: Start difference. First operand 332 states and 745 transitions. Second operand 36 states. [2020-12-23 13:56:22,101 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-12-23 13:56:22,312 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2020-12-23 13:56:22,618 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-12-23 13:56:23,025 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2020-12-23 13:56:23,590 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2020-12-23 13:56:23,928 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-12-23 13:56:24,461 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-12-23 13:56:25,013 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2020-12-23 13:56:25,334 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-12-23 13:56:25,614 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2020-12-23 13:56:26,143 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-12-23 13:56:26,449 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2020-12-23 13:56:27,028 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 64 [2020-12-23 13:56:27,567 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2020-12-23 13:56:27,995 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-12-23 13:56:28,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:56:28,770 INFO L93 Difference]: Finished difference Result 509 states and 1138 transitions. [2020-12-23 13:56:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 13:56:28,771 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-12-23 13:56:28,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:56:28,774 INFO L225 Difference]: With dead ends: 509 [2020-12-23 13:56:28,774 INFO L226 Difference]: Without dead ends: 506 [2020-12-23 13:56:28,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=527, Invalid=3133, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 13:56:28,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-12-23 13:56:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 411. [2020-12-23 13:56:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-12-23 13:56:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 926 transitions. [2020-12-23 13:56:28,784 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 926 transitions. Word has length 23 [2020-12-23 13:56:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:56:28,784 INFO L481 AbstractCegarLoop]: Abstraction has 411 states and 926 transitions. [2020-12-23 13:56:28,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 13:56:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 926 transitions. [2020-12-23 13:56:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:56:28,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:56:28,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:56:29,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:56:29,001 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:56:29,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:56:29,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1094463333, now seen corresponding path program 25 times [2020-12-23 13:56:29,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:56:29,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306477730] [2020-12-23 13:56:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:56:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:56:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:30,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306477730] [2020-12-23 13:56:30,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516873868] [2020-12-23 13:56:30,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:56:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:56:30,120 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:56:30,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:56:30,137 INFO L382 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 168 treesize of output 164 [2020-12-23 13:56:30,140 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:30,158 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:30,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:30,166 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:56:30,167 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:30,186 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:30,189 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:56:30,190 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:56:30,997 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:56:31,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,026 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:31,069 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:31,070 INFO L382 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 [2020-12-23 13:56:31,074 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:31,156 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:56:31,158 INFO L547 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. [2020-12-23 13:56:31,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:52 [2020-12-23 13:56:31,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:56:31,378 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:31,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:31,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:31,386 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:56:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,408 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:31,434 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:31,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,455 INFO L382 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 [2020-12-23 13:56:31,458 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:31,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,473 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:31,486 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:31,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,496 INFO L382 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 67 treesize of output 54 [2020-12-23 13:56:31,499 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:31,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,514 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:31,524 INFO L382 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 [2020-12-23 13:56:31,525 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:31,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:31,546 INFO L547 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. [2020-12-23 13:56:31,547 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:259, output treesize:46 [2020-12-23 13:56:31,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:31,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:32,044 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:32,044 INFO L382 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 58 treesize of output 150 [2020-12-23 13:56:32,048 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:32,126 INFO L625 ElimStorePlain]: treesize reduction 62, result has 50.8 percent of original size [2020-12-23 13:56:32,128 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:56:32,131 INFO L547 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. [2020-12-23 13:56:32,131 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:34 [2020-12-23 13:56:32,380 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:32,380 INFO L382 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 [2020-12-23 13:56:32,382 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:32,389 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:32,390 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:56:32,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:7 [2020-12-23 13:56:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:32,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:56:32,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2020-12-23 13:56:32,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823020712] [2020-12-23 13:56:32,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 13:56:32,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:56:32,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 13:56:32,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 13:56:32,403 INFO L87 Difference]: Start difference. First operand 411 states and 926 transitions. Second operand 34 states. [2020-12-23 13:56:33,876 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-12-23 13:56:34,128 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-12-23 13:56:34,309 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-12-23 13:56:34,625 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2020-12-23 13:56:36,093 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-12-23 13:56:36,640 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-12-23 13:56:36,891 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-12-23 13:56:37,607 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2020-12-23 13:56:38,066 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2020-12-23 13:56:38,587 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-12-23 13:56:38,966 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-12-23 13:56:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:56:40,130 INFO L93 Difference]: Finished difference Result 672 states and 1497 transitions. [2020-12-23 13:56:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 13:56:40,131 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 23 [2020-12-23 13:56:40,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:56:40,134 INFO L225 Difference]: With dead ends: 672 [2020-12-23 13:56:40,134 INFO L226 Difference]: Without dead ends: 672 [2020-12-23 13:56:40,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=546, Invalid=3486, Unknown=0, NotChecked=0, Total=4032 [2020-12-23 13:56:40,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-12-23 13:56:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 421. [2020-12-23 13:56:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-12-23 13:56:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 957 transitions. [2020-12-23 13:56:40,142 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 957 transitions. Word has length 23 [2020-12-23 13:56:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:56:40,142 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 957 transitions. [2020-12-23 13:56:40,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 13:56:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 957 transitions. [2020-12-23 13:56:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:56:40,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:56:40,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:56:40,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 13:56:40,347 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:56:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:56:40,347 INFO L82 PathProgramCache]: Analyzing trace with hash -104877979, now seen corresponding path program 26 times [2020-12-23 13:56:40,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:56:40,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037242927] [2020-12-23 13:56:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:56:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:56:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:41,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037242927] [2020-12-23 13:56:41,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115041783] [2020-12-23 13:56:41,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:56:41,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:56:41,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:56:41,520 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 94 conjunts are in the unsatisfiable core [2020-12-23 13:56:41,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:56:41,536 INFO L382 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 222 treesize of output 206 [2020-12-23 13:56:41,539 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:41,556 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:41,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:41,563 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:56:41,564 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:41,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:41,582 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 13:56:41,582 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:58, output treesize:31 [2020-12-23 13:56:42,296 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-12-23 13:56:42,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,309 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:42,343 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:42,343 INFO L382 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 [2020-12-23 13:56:42,346 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:42,414 INFO L625 ElimStorePlain]: treesize reduction 42, result has 55.3 percent of original size [2020-12-23 13:56:42,416 INFO L547 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. [2020-12-23 13:56:42,416 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:52 [2020-12-23 13:56:42,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:56:42,624 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:42,625 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:42,625 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:42,626 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:56:42,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,644 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:42,669 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:42,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,676 INFO L382 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 [2020-12-23 13:56:42,679 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:42,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,691 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:42,710 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:42,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,716 INFO L382 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 67 treesize of output 54 [2020-12-23 13:56:42,719 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:42,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:42,732 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:42,733 INFO L382 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 [2020-12-23 13:56:42,734 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:42,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:42,757 INFO L547 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. [2020-12-23 13:56:42,758 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:259, output treesize:46 [2020-12-23 13:56:43,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:43,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:43,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:43,122 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:43,123 INFO L382 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 58 treesize of output 150 [2020-12-23 13:56:43,127 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:43,208 INFO L625 ElimStorePlain]: treesize reduction 62, result has 49.6 percent of original size [2020-12-23 13:56:43,210 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:56:43,212 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 13:56:43,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:65, output treesize:31 [2020-12-23 13:56:43,536 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:43,536 INFO L382 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 [2020-12-23 13:56:43,538 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:43,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:43,547 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:56:43,547 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:7 [2020-12-23 13:56:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:43,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:56:43,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2020-12-23 13:56:43,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063634227] [2020-12-23 13:56:43,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 13:56:43,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:56:43,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 13:56:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 13:56:43,667 INFO L87 Difference]: Start difference. First operand 421 states and 957 transitions. Second operand 36 states. [2020-12-23 13:56:45,212 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-12-23 13:56:45,396 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-12-23 13:56:45,657 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-12-23 13:56:47,037 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-23 13:56:47,515 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-12-23 13:56:48,158 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2020-12-23 13:56:48,630 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-23 13:56:48,938 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-12-23 13:56:49,151 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-12-23 13:56:49,514 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-23 13:56:49,893 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 13:56:50,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:56:50,815 INFO L93 Difference]: Finished difference Result 545 states and 1195 transitions. [2020-12-23 13:56:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 13:56:50,816 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-12-23 13:56:50,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:56:50,819 INFO L225 Difference]: With dead ends: 545 [2020-12-23 13:56:50,819 INFO L226 Difference]: Without dead ends: 545 [2020-12-23 13:56:50,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=550, Invalid=3482, Unknown=0, NotChecked=0, Total=4032 [2020-12-23 13:56:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-12-23 13:56:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 373. [2020-12-23 13:56:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-12-23 13:56:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 826 transitions. [2020-12-23 13:56:50,829 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 826 transitions. Word has length 23 [2020-12-23 13:56:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:56:50,829 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 826 transitions. [2020-12-23 13:56:50,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 13:56:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 826 transitions. [2020-12-23 13:56:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:56:50,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:56:50,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:56:51,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:56:51,045 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:56:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:56:51,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1833669239, now seen corresponding path program 27 times [2020-12-23 13:56:51,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:56:51,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241031020] [2020-12-23 13:56:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:56:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:56:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:52,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241031020] [2020-12-23 13:56:52,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941429603] [2020-12-23 13:56:52,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:56:52,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 13:56:52,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:56:52,764 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:56:52,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:56:52,784 INFO L382 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 39 treesize of output 37 [2020-12-23 13:56:52,787 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 13:56:52,845 INFO L625 ElimStorePlain]: treesize reduction 22, result has 70.7 percent of original size [2020-12-23 13:56:52,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:52,853 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:56:52,854 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:52,873 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:52,876 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:56:52,877 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:56:53,681 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:56:53,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:53,814 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:53,847 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:53,848 INFO L382 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 [2020-12-23 13:56:53,851 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:53,926 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:56:53,928 INFO L547 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. [2020-12-23 13:56:53,928 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:56:54,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:56:54,193 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:54,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:54,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:56:54,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:56:54,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,211 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:54,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,221 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,240 INFO L382 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 67 treesize of output 54 [2020-12-23 13:56:54,243 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:54,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,255 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:54,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,264 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:54,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,287 INFO L382 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 [2020-12-23 13:56:54,290 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:54,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,299 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:56:54,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:56:54,302 INFO L382 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 [2020-12-23 13:56:54,303 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:54,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:54,327 INFO L547 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. [2020-12-23 13:56:54,327 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:56:54,893 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:54,894 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:56:54,897 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:54,983 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:56:54,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:56:54,987 INFO L547 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. [2020-12-23 13:56:54,988 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:56:55,103 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:56:55,105 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:56:55,112 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:56:55,114 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:56:55,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:56:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:56:55,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:56:55,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2020-12-23 13:56:55,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591793849] [2020-12-23 13:56:55,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 13:56:55,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:56:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 13:56:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 13:56:55,124 INFO L87 Difference]: Start difference. First operand 373 states and 826 transitions. Second operand 36 states. [2020-12-23 13:56:55,737 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-12-23 13:56:55,995 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-23 13:56:56,640 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2020-12-23 13:56:56,993 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2020-12-23 13:56:57,321 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-12-23 13:56:57,645 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-12-23 13:56:58,044 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 63 [2020-12-23 13:56:58,556 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 61 [2020-12-23 13:56:59,588 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2020-12-23 13:57:00,267 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-12-23 13:57:00,488 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2020-12-23 13:57:00,726 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-12-23 13:57:00,905 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-12-23 13:57:01,276 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2020-12-23 13:57:01,543 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-12-23 13:57:01,816 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-12-23 13:57:01,996 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-12-23 13:57:02,233 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2020-12-23 13:57:02,481 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-12-23 13:57:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:57:03,187 INFO L93 Difference]: Finished difference Result 517 states and 1130 transitions. [2020-12-23 13:57:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 13:57:03,189 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-12-23 13:57:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:57:03,191 INFO L225 Difference]: With dead ends: 517 [2020-12-23 13:57:03,191 INFO L226 Difference]: Without dead ends: 517 [2020-12-23 13:57:03,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=555, Invalid=3867, Unknown=0, NotChecked=0, Total=4422 [2020-12-23 13:57:03,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-12-23 13:57:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 386. [2020-12-23 13:57:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-12-23 13:57:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 857 transitions. [2020-12-23 13:57:03,200 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 857 transitions. Word has length 23 [2020-12-23 13:57:03,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:57:03,200 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 857 transitions. [2020-12-23 13:57:03,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 13:57:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 857 transitions. [2020-12-23 13:57:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:57:03,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:57:03,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:57:03,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 13:57:03,416 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:57:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:57:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2114802673, now seen corresponding path program 28 times [2020-12-23 13:57:03,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:57:03,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189404683] [2020-12-23 13:57:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:57:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:57:04,267 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-12-23 13:57:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:57:05,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189404683] [2020-12-23 13:57:05,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658156828] [2020-12-23 13:57:05,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:57:05,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:57:05,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:57:05,157 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:57:05,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:57:05,173 INFO L382 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 63 treesize of output 59 [2020-12-23 13:57:05,176 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:05,227 INFO L625 ElimStorePlain]: treesize reduction 18, result has 74.6 percent of original size [2020-12-23 13:57:05,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:05,233 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:57:05,234 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:05,250 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:57:05,253 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:57:05,254 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:57:06,041 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:57:06,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,175 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:06,214 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:57:06,215 INFO L382 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 [2020-12-23 13:57:06,218 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:06,300 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:57:06,302 INFO L547 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. [2020-12-23 13:57:06,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:57:06,567 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:57:06,568 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:57:06,569 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:57:06,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:57:06,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:57:06,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,591 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:06,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,604 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:06,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,632 INFO L382 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 67 treesize of output 54 [2020-12-23 13:57:06,634 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:06,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,644 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:06,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,651 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:06,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,668 INFO L382 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 [2020-12-23 13:57:06,673 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:06,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,681 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:06,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:06,683 INFO L382 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 [2020-12-23 13:57:06,685 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:06,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:57:06,710 INFO L547 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. [2020-12-23 13:57:06,710 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49 [2020-12-23 13:57:07,294 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:57:07,295 INFO L382 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 4 case distinctions, treesize of input 58 treesize of output 130 [2020-12-23 13:57:07,297 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:07,388 INFO L625 ElimStorePlain]: treesize reduction 58, result has 51.7 percent of original size [2020-12-23 13:57:07,390 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 13:57:07,392 INFO L547 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. [2020-12-23 13:57:07,393 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:68, output treesize:35 [2020-12-23 13:57:07,505 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2020-12-23 13:57:07,506 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:07,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:57:07,513 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:57:07,514 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:7 [2020-12-23 13:57:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:57:07,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:57:07,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2020-12-23 13:57:07,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627859328] [2020-12-23 13:57:07,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 13:57:07,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:57:07,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 13:57:07,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 13:57:07,558 INFO L87 Difference]: Start difference. First operand 386 states and 857 transitions. Second operand 36 states. [2020-12-23 13:57:08,784 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-12-23 13:57:09,116 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-12-23 13:57:09,439 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2020-12-23 13:57:09,809 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-12-23 13:57:10,173 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2020-12-23 13:57:10,649 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2020-12-23 13:57:11,200 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2020-12-23 13:57:11,677 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2020-12-23 13:57:12,061 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2020-12-23 13:57:12,301 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-23 13:57:12,740 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2020-12-23 13:57:13,065 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-12-23 13:57:13,408 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2020-12-23 13:57:13,702 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-12-23 13:57:13,952 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-12-23 13:57:14,366 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-12-23 13:57:14,596 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-23 13:57:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:57:15,292 INFO L93 Difference]: Finished difference Result 523 states and 1142 transitions. [2020-12-23 13:57:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 13:57:15,293 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 23 [2020-12-23 13:57:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:57:15,295 INFO L225 Difference]: With dead ends: 523 [2020-12-23 13:57:15,295 INFO L226 Difference]: Without dead ends: 523 [2020-12-23 13:57:15,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=507, Invalid=3525, Unknown=0, NotChecked=0, Total=4032 [2020-12-23 13:57:15,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-12-23 13:57:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 398. [2020-12-23 13:57:15,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-12-23 13:57:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 884 transitions. [2020-12-23 13:57:15,303 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 884 transitions. Word has length 23 [2020-12-23 13:57:15,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:57:15,303 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 884 transitions. [2020-12-23 13:57:15,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 13:57:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 884 transitions. [2020-12-23 13:57:15,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:57:15,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:57:15,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:57:15,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 13:57:15,518 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:57:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:57:15,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1015696309, now seen corresponding path program 29 times [2020-12-23 13:57:15,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:57:15,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920234739] [2020-12-23 13:57:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:57:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:57:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:57:17,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920234739] [2020-12-23 13:57:17,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13267946] [2020-12-23 13:57:17,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:57:17,280 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:57:17,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:57:17,282 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-23 13:57:17,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:57:17,310 INFO L382 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 39 treesize of output 37 [2020-12-23 13:57:17,313 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 13:57:17,377 INFO L625 ElimStorePlain]: treesize reduction 22, result has 70.7 percent of original size [2020-12-23 13:57:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:17,385 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2020-12-23 13:57:17,387 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:17,406 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:57:17,409 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:57:17,410 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:58, output treesize:31 [2020-12-23 13:57:18,206 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-23 13:57:18,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,337 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:18,372 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:57:18,372 INFO L382 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 [2020-12-23 13:57:18,377 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:18,455 INFO L625 ElimStorePlain]: treesize reduction 42, result has 56.7 percent of original size [2020-12-23 13:57:18,457 INFO L547 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. [2020-12-23 13:57:18,457 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:55 [2020-12-23 13:57:18,706 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 13:57:18,706 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:57:18,707 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:57:18,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 13:57:18,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 13:57:18,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,728 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:18,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,741 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:18,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,771 INFO L382 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 67 treesize of output 54 [2020-12-23 13:57:18,773 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:18,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,784 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:18,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,793 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:18,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,810 INFO L382 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 [2020-12-23 13:57:18,813 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:18,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,822 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 13:57:18,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 13:57:18,824 INFO L382 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 [2020-12-23 13:57:18,826 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 13:57:18,851 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:57:18,853 INFO L547 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. [2020-12-23 13:57:18,853 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:268, output treesize:49